Miatapower List Archive

This read-only message was archived from a public mail list.
Mail From: (email redacted)

Factory ground.. thought of that as well and will probably (assuming I
rewire the pump) wire in a beefy ground back to the battery ground point
with a 10/8 whatever huge I have laying around. ;)

What I find more disturbing is the 1.3-1.5 volts lost between the battery
and the pump.. all that is new wiring by Ken, don't believe any of it was
underwater.. so why the huge loss of a 10AWG that is 3.5' long? Checked it
at the relay and it had maybe a .3 loss, would have to retest tonight to
verify but it all adds up. Still, it shouldn't be that much.

Never buy a car that's been underwater.. stoopid stoopid stoooooopid! ;)

Wallyman




"Robert M"
<porter_t_dog@hot
mail.com> To
(email redacted),
04/11/2005 09:11 (email redacted)
AM cc

Subject
RE: Voltage, Oh Voltage, where art
thou? Fuel Pump Issues...











How is the pump grounded and what is the condition of that connection?

I would have thought that 10AWG would be enough; it's enough for my 5hp IR
compressor (single phase 220v...)

I probably would have gotten a new pump before going through all that
stuff, but that's just me ;)

>From: (email redacted)
>To: (email redacted)
>Subject: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...
>Date: Mon, 11 Apr 2005 08:58:12 -0400
>
>...or how do you read 2 volt meters, a fuel pressure gauge and a laptop
all
>at once? Video! I've got some entertaining video of the car from all
this..
>2 volt meters bungied to the passenger seat, camera on the trunk and
zoomed
>to the interior so you can almost read the fuel pressure gauge... Yeah, I
>looked a bit funny but it worked... ;) Ok, fuel pump testing was fun,
sort
>of, but I don't know if I am any closer to a solution...
>
>Problem - Fuel pressure tapers off at high rpm.

This read-only message was archived from a public mail list.
Mail From: "Robert M" <(email redacted)>


Well, I doubt the factory ground is 10 gauge... I'd start there as the
current has to flow through the entire circuit for the pump to work.

$0.02,
Robert (NOT an electrical guy!)

>From: (email redacted)
>To: "Robert M" <(email redacted)>
>CC: (email redacted)
>Subject: RE: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...
>Date: Mon, 11 Apr 2005 09:12:56 -0400
>
>Factory ground.. thought of that as well and will probably (assuming I
>rewire the pump) wire in a beefy ground back to the battery ground point
>with a 10/8 whatever huge I have laying around. ;)
>
>What I find more disturbing is the 1.3-1.5 volts lost between the battery
>and the pump.. all that is new wiring by Ken, don't believe any of it was
>underwater.. so why the huge loss of a 10AWG that is 3.5' long? Checked it
>at the relay and it had maybe a .3 loss, would have to retest tonight to
>verify but it all adds up. Still, it shouldn't be that much.
>
>Never buy a car that's been underwater.. stoopid stoopid stoooooopid! ;)
>
>Wallyman
>
>
>
>
> "Robert M"
> <porter_t_dog@hot
> mail.com> To
> (email redacted),
> 04/11/2005 09:11 (email redacted)
> AM cc
>
> Subject
> RE: Voltage, Oh Voltage, where art
> thou? Fuel Pump Issues...
>
>
>
>
>
>
>
>
>
>
>
> How is the pump grounded and what is the condition of that connection?
>
>I would have thought that 10AWG would be enough; it's enough for my 5hp IR
>compressor (single phase 220v...)
>
> I probably would have gotten a new pump before going through all that
>stuff, but that's just me ;)
>
> >From: (email redacted)
> >To: (email redacted)
> >Subject: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...
> >Date: Mon, 11 Apr 2005 08:58:12 -0400
> >
> >...or how do you read 2 volt meters, a fuel pressure gauge and a laptop
>all
> >at once? Video! I've got some entertaining video of the car from all
>this..
> >2 volt meters bungied to the passenger seat, camera on the trunk and
>zoomed
> >to the interior so you can almost read the fuel pressure gauge... Yeah, I
> >looked a bit funny but it worked... ;) Ok, fuel pump testing was fun,
>sort
> >of, but I don't know if I am any closer to a solution...
> >
> >Problem - Fuel pressure tapers off at high rpm.
>
>
>
>

This read-only message was archived from a public mail list.
Mail From: "Bill Cardell" <(email redacted)>

Ground would be worth checking and you might want to put a voltmeter on
both sides of any yellow butt connectors Ken used. We had some funny
ones in the shop for awhile.=20

-----Original Message-----
From: (email redacted) [mailto:(email redacted)]=20
Sent: Monday, April 11, 2005 7:13 AM
To: Robert M
Cc: (email redacted)
Subject: RE: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...

Factory ground.. thought of that as well and will probably (assuming I
rewire the pump) wire in a beefy ground back to the battery ground point
with a 10/8 whatever huge I have laying around. ;)

What I find more disturbing is the 1.3-1.5 volts lost between the
battery and the pump.. all that is new wiring by Ken, don't believe any
of it was underwater.. so why the huge loss of a 10AWG that is 3.5'
long? Checked it at the relay and it had maybe a .3 loss, would have to
retest tonight to verify but it all adds up. Still, it shouldn't be
that much.

Never buy a car that's been underwater.. stoopid stoopid stoooooopid!
;)

Wallyman



=20

"Robert M"

<porter_t_dog@hot

mail.com>
To=20
(email redacted),

04/11/2005 09:11 (email redacted)

AM
cc=20
=20

=20
Subject=20
RE: Voltage, Oh Voltage, where
art=20=20
thou? Fuel Pump Issues...

=20

=20

=20

=20

=20

=20






How is the pump grounded and what is the condition of that
connection?

I would have thought that 10AWG would be enough; it's enough for my 5hp
IR compressor (single phase 220v...)

I probably would have gotten a new pump before going through all that
stuff, but that's just me ;)

>From: (email redacted)
>To: (email redacted)
>Subject: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...
>Date: Mon, 11 Apr 2005 08:58:12 -0400
>
>...or how do you read 2 volt meters, a fuel pressure gauge and a laptop
all
>at once? Video! I've got some entertaining video of the car from all
this..
>2 volt meters bungied to the passenger seat, camera on the trunk and
zoomed
>to the interior so you can almost read the fuel pressure gauge... Yeah,

>I looked a bit funny but it worked... ;) Ok, fuel pump testing was=20
>fun,
sort
>of, but I don't know if I am any closer to a solution...
>
>Problem - Fuel pressure tapers off at high rpm.

This read-only message was archived from a public mail list.
Mail From: (email redacted)

Hmm.. I was measuring post-splice... in the connector. the splice is a
typical opaque yellow but looked like it might be a heat shrink built in
type.. I couldn't get the meter in it so I went to connector.

I'm going to try and find a spare connector out of the 97 wiring and splice
on some beefy power and ground wires and test it out, that should tell me
for sure. I hope that's all it is. Fuel pump replacement blows. :(

Wallyman





"Bill Cardell"
<Bill@flyinmiata.
com> To
<(email redacted)>, "Robert
04/11/2005 10:24 M" <(email redacted)>
AM cc
<(email redacted)>
Subject
RE: Voltage, Oh Voltage, where art
thou? Fuel Pump Issues...










Ground would be worth checking and you might want to put a voltmeter on
both sides of any yellow butt connectors Ken used. We had some funny
ones in the shop for awhile.

-----Original Message-----
From: (email redacted) [mailto:(email redacted)]
Sent: Monday, April 11, 2005 7:13 AM
To: Robert M
Cc: (email redacted)
Subject: RE: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...

Factory ground.. thought of that as well and will probably (assuming I
rewire the pump) wire in a beefy ground back to the battery ground point
with a 10/8 whatever huge I have laying around. ;)

What I find more disturbing is the 1.3-1.5 volts lost between the
battery and the pump.. all that is new wiring by Ken, don't believe any
of it was underwater.. so why the huge loss of a 10AWG that is 3.5'
long? Checked it at the relay and it had maybe a .3 loss, would have to
retest tonight to verify but it all adds up. Still, it shouldn't be
that much.

Never buy a car that's been underwater.. stoopid stoopid stoooooopid!
;)

Wallyman





"Robert M"

<porter_t_dog@hot

mail.com>
To
(email redacted),

04/11/2005 09:11 (email redacted)

AM
cc



Subject
RE: Voltage, Oh Voltage, where
art
thou? Fuel Pump Issues...


















How is the pump grounded and what is the condition of that
connection?

I would have thought that 10AWG would be enough; it's enough for my 5hp
IR compressor (single phase 220v...)

I probably would have gotten a new pump before going through all that
stuff, but that's just me ;)

>From: (email redacted)
>To: (email redacted)
>Subject: Voltage, Oh Voltage, where art thou? Fuel Pump Issues...
>Date: Mon, 11 Apr 2005 08:58:12 -0400
>
>...or how do you read 2 volt meters, a fuel pressure gauge and a laptop
all
>at once? Video! I've got some entertaining video of the car from all
this..
>2 volt meters bungied to the passenger seat, camera on the trunk and
zoomed
>to the interior so you can almost read the fuel pressure gauge... Yeah,

>I looked a bit funny but it worked... ;) Ok, fuel pump testing was
>fun,
sort
>of, but I don't know if I am any closer to a solution...
>
>Problem - Fuel pressure tapers off at high rpm.