Miatapower List Archive
more bucking action
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Jul 8, 2002 03:24 PM
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Mail From: "Chris Messmer" <(email redacted)>
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To: (email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: "Chris Messmer" <(email redacted)>
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To: (email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 8, 2002 03:31 PM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: Bill Cardell <(email redacted)>
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: Bill Cardell <(email redacted)>
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 8, 2002 03:41 PM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: "Chris Messmer" <(email redacted)>
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer' <(email redacted)>, Ray Ayala
com> <(email redacted)>
cc: (email redacted)
07/08/02 01:31 PM Subject: RE: more bucking action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: "Chris Messmer" <(email redacted)>
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer' <(email redacted)>, Ray Ayala
com> <(email redacted)>
cc: (email redacted)
07/08/02 01:31 PM Subject: RE: more bucking action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 8, 2002 03:48 PM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: Bill Cardell <(email redacted)>
datalog
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: Bill Cardell <(email redacted)>
datalog
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 8, 2002 03:55 PM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: "Chris Messmer" <(email redacted)>
I will tonight.
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer' <(email redacted)>, Bill Cardell
com> <(email redacted)>
cc: (email redacted), Ray Ayala
07/08/02 01:48 PM <(email redacted)>
Subject: RE: more bucking action
datalog
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: "Chris Messmer" <(email redacted)>
I will tonight.
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer' <(email redacted)>, Bill Cardell
com> <(email redacted)>
cc: (email redacted), Ray Ayala
07/08/02 01:48 PM <(email redacted)>
Subject: RE: more bucking action
datalog
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 10, 2002 12:16 AM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: mx5 <(email redacted)>
Chris/Bill
I'm having the same problem. FMII kit, latest chip. FM2 reload, car runs
fine. Do some coarse tuning, and it starts to happen again. Only below
3000 RPM. Didn't do it with older (pre temp comp) chip.
Vic
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
Mail From: mx5 <(email redacted)>
Chris/Bill
I'm having the same problem. FMII kit, latest chip. FM2 reload, car runs
fine. Do some coarse tuning, and it starts to happen again. Only below
3000 RPM. Didn't do it with older (pre temp comp) chip.
Vic
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:42 PM
To: Bill Cardell
Cc: (email redacted); Ray Ayala
Subject: RE: more bucking action
Bill,
Tach appears to indicate reality, does not "drop out" like an ignition
failure.
it gets worse, I reload turbo 2 , (add 8 points to master fuel which
temporarily improves A/F ratios until I decide to start over). I haven't
touched ignition zones.
It's been a busy 2-race weekend, so I haven't had too much time to mess
with it aside from starting from scratch and retuning it Saturday. We got
95% of the zones in the first 3 rows, car seemed fine ..... saved .....
shut down .... started up ..... and the bucking came back.
Chris
Bill Cardell
<bill@flyinmiata. To: 'Chris Messmer'
<(email redacted)>, Ray Ayala
com> <(email redacted)>
cc:
(email redacted)
07/08/02 01:31 PM Subject: RE: more bucking
action
Chris,
Is the tacho dropping out when it happens?
Bill Cardell (TurboDog's Dad)
(email redacted)
Flyin' Miata
1-800-359-6957 (sales only)
970-242-3800 (tech support)
flyinmiata.com
-----Original Message-----
From: Chris Messmer [mailto:(email redacted)]
Sent: Monday, July 08, 2002 2:24 PM
To: Ray Ayala
Cc: (email redacted)
Subject: Re: more bucking action
I'm having this same problem on my 94 (w/autorotor). Mostly bucks
(heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
(per shop manual). A/F gauge does not indicate unusually lean or rich .
It seems more violent coming off boost.
I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
my coarse tuning it seems fine until I refire the car (saved before shut
down), then the bucking comes back.
When it is at it's worst it seems like an intermittent ignition failure
that disappears instantly in row 3 or higher.
Chris
Ray Ayala
<(email redacted) To:
(email redacted)
m> cc:
Subject: Re: bucking action
07/03/02 12:36 PM
Have you checked your logs to be sure you're not going lean at that point?
If it's not lean you may want to reduce your IAC to 25% and open your idle
screw accordingly.
----- Original Message -----
From: "Glenn Johnson" <(email redacted)>
To: <(email redacted)>
Sent: Wednesday, July 03, 2002 12:09 PM
Subject: RE: bucking action
> I have a real dead spot on the minutest throttle application. Although
the
> idle switch indicator goes out as soon as I think about pressing the
pedal,
> the engine will stumble and barely idle if I just give it the gentlest
> press...it's like the throttle's less open than the IAC valve at that
point.
>
> Is there some kind of adjustment I can do to make sure the "*" goes
straight
> away, but at this point the throttle is letting as much air through as
the
> IAC valve?
>
> Glenn
>
> -----Original Message-----
> From: Kurt Summers [mailto:(email redacted)]
> Sent: 03 July 2002 05:28
> To: (email redacted)
> Subject: RE: bucking action
>
>
> Be SURE to do as Bill said and check to make sure that the TPS is
adjusted
> properly. Car will buck just off closed throttle anytime you are in a
low
> speed situation if the TPS closed signal remains too long after cracking
> open the throttle. Adjust the TPS so that the asterisk in the idle
window
> goes away "immediately" when you press the throttle. Worked for me.
>
> Kurt
>
>
> >I have a strange bucking sensation on my car now that I have installed
the
> >Link ECU.
> >
> >Under certain conditions the car will buck, or jerk.
> >
> >Conditions are:
> >
> >> High vacuum(10-20 inches)
> >
> >> 3000 RPM +/- 300
> >
> >> Feathering throttle off and on.
> >
> >Seems to be more prevalent while cruising in 4th and 5th gear.
> >
> >Do I need to tune better? Anyone else have this effect?
> >
> >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> >
> >Other than this, the car has never run better, and I am very pleased
with
> >the way the Link is functioning.
> >
> >Thanks
> >
> >Steve
> >
> >
> >
>
>
|
mailbot
Mail List Archive Bot
., Online, USA
|
Topic Creator (OP)
Jul 10, 2002 09:01 AM
Joined 15 years ago
227,243 Posts
|
This read-only message was archived from a public mail list.
Mail From: Ray Ayala <(email redacted)>
Have you tried reducing ign timing in those zones?
----- Original Message -----
From: "mx5" <(email redacted)>
To: "Chris Messmer" <(email redacted)>; "Bill Cardell"
<(email redacted)>
Cc: <(email redacted)>; "Ray Ayala" <(email redacted)>
Sent: Tuesday, July 09, 2002 10:16 PM
Subject: RE: more bucking action
> Chris/Bill
>
> I'm having the same problem. FMII kit, latest chip. FM2 reload, car runs
> fine. Do some coarse tuning, and it starts to happen again. Only below
> 3000 RPM. Didn't do it with older (pre temp comp) chip.
>
> Vic
>
> -----Original Message-----
> From: Chris Messmer [mailto:(email redacted)]
> Sent: Monday, July 08, 2002 2:42 PM
> To: Bill Cardell
> Cc: (email redacted); Ray Ayala
> Subject: RE: more bucking action
>
>
>
> Bill,
> Tach appears to indicate reality, does not "drop out" like an ignition
> failure.
>
> it gets worse, I reload turbo 2 , (add 8 points to master fuel which
> temporarily improves A/F ratios until I decide to start over). I haven't
> touched ignition zones.
>
> It's been a busy 2-race weekend, so I haven't had too much time to mess
> with it aside from starting from scratch and retuning it Saturday. We got
> 95% of the zones in the first 3 rows, car seemed fine ..... saved .....
> shut down .... started up ..... and the bucking came back.
>
> Chris
>
>
>
> Bill Cardell
> <bill@flyinmiata. To: 'Chris Messmer'
> <(email redacted)>, Ray Ayala
> com> <(email redacted)>
> cc:
> (email redacted)
> 07/08/02 01:31 PM Subject: RE: more bucking
> action
>
>
>
>
>
>
> Chris,
> Is the tacho dropping out when it happens?
>
> Bill Cardell (TurboDog's Dad)
> (email redacted)
> Flyin' Miata
> 1-800-359-6957 (sales only)
> 970-242-3800 (tech support)
> flyinmiata.com
>
> -----Original Message-----
> From: Chris Messmer [mailto:(email redacted)]
> Sent: Monday, July 08, 2002 2:24 PM
> To: Ray Ayala
> Cc: (email redacted)
> Subject: Re: more bucking action
>
>
>
> I'm having this same problem on my 94 (w/autorotor). Mostly bucks
> (heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
> (per shop manual). A/F gauge does not indicate unusually lean or rich .
> It seems more violent coming off boost.
>
> I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
> my coarse tuning it seems fine until I refire the car (saved before shut
> down), then the bucking comes back.
> When it is at it's worst it seems like an intermittent ignition failure
> that disappears instantly in row 3 or higher.
>
> Chris
>
>
>
>
> Ray Ayala
>
> <(email redacted) To:
> (email redacted)
> m> cc:
>
> Subject: Re: bucking
action
>
> 07/03/02 12:36 PM
>
>
>
>
>
>
>
>
>
> Have you checked your logs to be sure you're not going lean at that point?
> If it's not lean you may want to reduce your IAC to 25% and open your idle
> screw accordingly.
>
> ----- Original Message -----
> From: "Glenn Johnson" <(email redacted)>
> To: <(email redacted)>
> Sent: Wednesday, July 03, 2002 12:09 PM
> Subject: RE: bucking action
>
>
> > I have a real dead spot on the minutest throttle application. Although
> the
> > idle switch indicator goes out as soon as I think about pressing the
> pedal,
> > the engine will stumble and barely idle if I just give it the gentlest
> > press...it's like the throttle's less open than the IAC valve at that
> point.
> >
> > Is there some kind of adjustment I can do to make sure the "*" goes
> straight
> > away, but at this point the throttle is letting as much air through as
> the
> > IAC valve?
> >
> > Glenn
> >
> > -----Original Message-----
> > From: Kurt Summers [mailto:(email redacted)]
> > Sent: 03 July 2002 05:28
> > To: (email redacted)
> > Subject: RE: bucking action
> >
> >
> > Be SURE to do as Bill said and check to make sure that the TPS is
> adjusted
> > properly. Car will buck just off closed throttle anytime you are in a
> low
> > speed situation if the TPS closed signal remains too long after cracking
> > open the throttle. Adjust the TPS so that the asterisk in the idle
> window
> > goes away "immediately" when you press the throttle. Worked for me.
> >
> > Kurt
> >
> >
> > >I have a strange bucking sensation on my car now that I have installed
> the
> > >Link ECU.
> > >
> > >Under certain conditions the car will buck, or jerk.
> > >
> > >Conditions are:
> > >
> > >> High vacuum(10-20 inches)
> > >
> > >> 3000 RPM +/- 300
> > >
> > >> Feathering throttle off and on.
> > >
> > >Seems to be more prevalent while cruising in 4th and 5th gear.
> > >
> > >Do I need to tune better? Anyone else have this effect?
> > >
> > >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> > >
> > >Other than this, the car has never run better, and I am very pleased
> with
> > >the way the Link is functioning.
> > >
> > >Thanks
> > >
> > >Steve
> > >
> > >
> > >
> >
> >
>
>
>
>
>
>
>
>
>
>
Mail From: Ray Ayala <(email redacted)>
Have you tried reducing ign timing in those zones?
----- Original Message -----
From: "mx5" <(email redacted)>
To: "Chris Messmer" <(email redacted)>; "Bill Cardell"
<(email redacted)>
Cc: <(email redacted)>; "Ray Ayala" <(email redacted)>
Sent: Tuesday, July 09, 2002 10:16 PM
Subject: RE: more bucking action
> Chris/Bill
>
> I'm having the same problem. FMII kit, latest chip. FM2 reload, car runs
> fine. Do some coarse tuning, and it starts to happen again. Only below
> 3000 RPM. Didn't do it with older (pre temp comp) chip.
>
> Vic
>
> -----Original Message-----
> From: Chris Messmer [mailto:(email redacted)]
> Sent: Monday, July 08, 2002 2:42 PM
> To: Bill Cardell
> Cc: (email redacted); Ray Ayala
> Subject: RE: more bucking action
>
>
>
> Bill,
> Tach appears to indicate reality, does not "drop out" like an ignition
> failure.
>
> it gets worse, I reload turbo 2 , (add 8 points to master fuel which
> temporarily improves A/F ratios until I decide to start over). I haven't
> touched ignition zones.
>
> It's been a busy 2-race weekend, so I haven't had too much time to mess
> with it aside from starting from scratch and retuning it Saturday. We got
> 95% of the zones in the first 3 rows, car seemed fine ..... saved .....
> shut down .... started up ..... and the bucking came back.
>
> Chris
>
>
>
> Bill Cardell
> <bill@flyinmiata. To: 'Chris Messmer'
> <(email redacted)>, Ray Ayala
> com> <(email redacted)>
> cc:
> (email redacted)
> 07/08/02 01:31 PM Subject: RE: more bucking
> action
>
>
>
>
>
>
> Chris,
> Is the tacho dropping out when it happens?
>
> Bill Cardell (TurboDog's Dad)
> (email redacted)
> Flyin' Miata
> 1-800-359-6957 (sales only)
> 970-242-3800 (tech support)
> flyinmiata.com
>
> -----Original Message-----
> From: Chris Messmer [mailto:(email redacted)]
> Sent: Monday, July 08, 2002 2:24 PM
> To: Ray Ayala
> Cc: (email redacted)
> Subject: Re: more bucking action
>
>
>
> I'm having this same problem on my 94 (w/autorotor). Mostly bucks
> (heaviest) around zones 135 thru 145 & 235 thru 245. TPS adjusted properly
> (per shop manual). A/F gauge does not indicate unusually lean or rich .
> It seems more violent coming off boost.
>
> I found that if I reload "turbo 2" it nearly goes away. Oddly, when I redo
> my coarse tuning it seems fine until I refire the car (saved before shut
> down), then the bucking comes back.
> When it is at it's worst it seems like an intermittent ignition failure
> that disappears instantly in row 3 or higher.
>
> Chris
>
>
>
>
> Ray Ayala
>
> <(email redacted) To:
> (email redacted)
> m> cc:
>
> Subject: Re: bucking
action
>
> 07/03/02 12:36 PM
>
>
>
>
>
>
>
>
>
> Have you checked your logs to be sure you're not going lean at that point?
> If it's not lean you may want to reduce your IAC to 25% and open your idle
> screw accordingly.
>
> ----- Original Message -----
> From: "Glenn Johnson" <(email redacted)>
> To: <(email redacted)>
> Sent: Wednesday, July 03, 2002 12:09 PM
> Subject: RE: bucking action
>
>
> > I have a real dead spot on the minutest throttle application. Although
> the
> > idle switch indicator goes out as soon as I think about pressing the
> pedal,
> > the engine will stumble and barely idle if I just give it the gentlest
> > press...it's like the throttle's less open than the IAC valve at that
> point.
> >
> > Is there some kind of adjustment I can do to make sure the "*" goes
> straight
> > away, but at this point the throttle is letting as much air through as
> the
> > IAC valve?
> >
> > Glenn
> >
> > -----Original Message-----
> > From: Kurt Summers [mailto:(email redacted)]
> > Sent: 03 July 2002 05:28
> > To: (email redacted)
> > Subject: RE: bucking action
> >
> >
> > Be SURE to do as Bill said and check to make sure that the TPS is
> adjusted
> > properly. Car will buck just off closed throttle anytime you are in a
> low
> > speed situation if the TPS closed signal remains too long after cracking
> > open the throttle. Adjust the TPS so that the asterisk in the idle
> window
> > goes away "immediately" when you press the throttle. Worked for me.
> >
> > Kurt
> >
> >
> > >I have a strange bucking sensation on my car now that I have installed
> the
> > >Link ECU.
> > >
> > >Under certain conditions the car will buck, or jerk.
> > >
> > >Conditions are:
> > >
> > >> High vacuum(10-20 inches)
> > >
> > >> 3000 RPM +/- 300
> > >
> > >> Feathering throttle off and on.
> > >
> > >Seems to be more prevalent while cruising in 4th and 5th gear.
> > >
> > >Do I need to tune better? Anyone else have this effect?
> > >
> > >Car is 96 1.8 with base JRSC, Link ECU, 460CC injectors, Walbro GSS342.
> > >
> > >Other than this, the car has never run better, and I am very pleased
> with
> > >the way the Link is functioning.
> > >
> > >Thanks
> > >
> > >Steve
> > >
> > >
> > >
> >
> >
>
>
>
>
>
>
>
>
>
>
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