Miatapower List Archive

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


Hello people,

I am looking for advice concerning the a/f readout on my 10th AE FM2.

I am using a seperate J&S a/f monitor that I still had from when I was
running my '91 with Sebring and J&S unit.
The time that it takes before the monitor is getting a/f signal (led's on
the unit starting to flash) is getting extremely long now.
In current weather temps (about 5 C) it takes about 6-7 miles before I get a
readout on the monitor.
I am beginning to wonder if possibly the Lambda sensor's heating circuit is
defective.
I am not getting a engine check code (or doesn't this apply when the heating
circuit is defective?).
The Workshop manager at my dealer who is also a Miata enthousiast is willing
to order a new lambda sensor under warranty, but told me that according to
the Mazda importer they have never changed a defective sensor yet and I
better make sure it really is defective first, or I will have to pay (sensor
is quite expensive over here in Europe, about $150) if it turns out
afterwards that the old sensor was OK.

Do others using a/f monitors experience the same long distance in cold
weather before the a/f signal starts showing? (on my Mitsubishi Lancer Evo
VI where I also fitted a (different) a/f monitor, it takes less than 1/2
mile before the signal shows).
How do I check the lambda sensor's heating circuit??

Regards,

René Smeenk
Running fast
MY99 10th AE FM II with lots of toys
MY01 Mitsubishi Lancer Evo VI with a few toys, getting more, tuned to
approx. 330Bhp/420Nm (now
one of the fastest awd cars you can get with 0-100km under 5 sec/0-60mls
under 4,5 sec) it's fun to humiliate Porsches!

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


Sounds like the heater to me. My aftermarket O2 sensor starts cycling
within about 20 or 30 seconds after I start the car. It was 300 degrees
the other morning.

As for checking it, it's a heater. Figure out which are the 2 wires and
measure it with an ohm meter.

"René Smeenk" wrote:
>
> Hello people,
>
> I am looking for advice concerning the a/f readout on my 10th AE FM2.
>
> I am using a seperate J&S a/f monitor that I still had from when I was
> running my '91 with Sebring and J&S unit.
> The time that it takes before the monitor is getting a/f signal (led's on
> the unit starting to flash) is getting extremely long now.
> In current weather temps (about 5 C) it takes about 6-7 miles before I get a
> readout on the monitor.
> I am beginning to wonder if possibly the Lambda sensor's heating circuit is
> defective.
> I am not getting a engine check code (or doesn't this apply when the heating
> circuit is defective?).
> The Workshop manager at my dealer who is also a Miata enthousiast is willing
> to order a new lambda sensor under warranty, but told me that according to
> the Mazda importer they have never changed a defective sensor yet and I
> better make sure it really is defective first, or I will have to pay (sensor
> is quite expensive over here in Europe, about $150) if it turns out
> afterwards that the old sensor was OK.
>
> Do others using a/f monitors experience the same long distance in cold
> weather before the a/f signal starts showing? (on my Mitsubishi Lancer Evo
> VI where I also fitted a (different) a/f monitor, it takes less than 1/2
> mile before the signal shows).
> How do I check the lambda sensor's heating circuit??
>
> Regards,
>
> René Smeenk
> Running fast
> MY99 10th AE FM II with lots of toys
> MY01 Mitsubishi Lancer Evo VI with a few toys, getting more, tuned to
> approx. 330Bhp/420Nm (now
> one of the fastest awd cars you can get with 0-100km under 5 sec/0-60mls
> under 4,5 sec) it's fun to humiliate Porsches!
>
> -
> Send submissions to (email redacted)
> To unsubscribe, email (email redacted) with
> "unsubscribe sscor" in the body of the message.

--
Larry

White Knight 1991 Crystal White #99 CSP
Silver Bullet 1992 Silverstone #17 EM BEGI System IV Turbo +
Honey B 1992 Sunburst Yellow

LowCountry Miata drive.to/lowcountrymiata
Masters Miata
RAGS 074

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


No coffee yet. Make that 30 degrees out the other morning!!!

Larry Alster wrote:
>
> Sounds like the heater to me. My aftermarket O2 sensor starts cycling
> within about 20 or 30 seconds after I start the car. It was 300 degrees
> the other morning.
>
> As for checking it, it's a heater. Figure out which are the 2 wires and
> measure it with an ohm meter.
>
> "René Smeenk" wrote:
> >
> > Hello people,
> >
> > I am looking for advice concerning the a/f readout on my 10th AE FM2.
> >
> > I am using a seperate J&S a/f monitor that I still had from when I was
> > running my '91 with Sebring and J&S unit.
> > The time that it takes before the monitor is getting a/f signal (led's on
> > the unit starting to flash) is getting extremely long now.
> > In current weather temps (about 5 C) it takes about 6-7 miles before I get a
> > readout on the monitor.
> > I am beginning to wonder if possibly the Lambda sensor's heating circuit is
> > defective.
> > I am not getting a engine check code (or doesn't this apply when the heating
> > circuit is defective?).
> > The Workshop manager at my dealer who is also a Miata enthousiast is willing
> > to order a new lambda sensor under warranty, but told me that according to
> > the Mazda importer they have never changed a defective sensor yet and I
> > better make sure it really is defective first, or I will have to pay (sensor
> > is quite expensive over here in Europe, about $150) if it turns out
> > afterwards that the old sensor was OK.
> >
> > Do others using a/f monitors experience the same long distance in cold
> > weather before the a/f signal starts showing? (on my Mitsubishi Lancer Evo
> > VI where I also fitted a (different) a/f monitor, it takes less than 1/2
> > mile before the signal shows).
> > How do I check the lambda sensor's heating circuit??
> >
> > Regards,
> >
> > René Smeenk
> > Running fast
> > MY99 10th AE FM II with lots of toys
> > MY01 Mitsubishi Lancer Evo VI with a few toys, getting more, tuned to
> > approx. 330Bhp/420Nm (now
> > one of the fastest awd cars you can get with 0-100km under 5 sec/0-60mls
> > under 4,5 sec) it's fun to humiliate Porsches!
> >
> > -
> > Send submissions to (email redacted)
> > To unsubscribe, email (email redacted) with
> > "unsubscribe sscor" in the body of the message.
>
> --
> Larry
>
> White Knight 1991 Crystal White #99 CSP
> Silver Bullet 1992 Silverstone #17 EM BEGI System IV Turbo +
> Honey B 1992 Sunburst Yellow
>
> LowCountry Miata drive.to/lowcountrymiata
> Masters Miata
> RAGS 074
> -
> Send submissions to (email redacted)
> To unsubscribe, email (email redacted) with
> "unsubscribe sscor" in the body of the message.

--
Larry

White Knight 1991 Crystal White #99 CSP
Silver Bullet 1992 Silverstone #17 EM BEGI System IV Turbo +
Honey B 1992 Sunburst Yellow

LowCountry Miata drive.to/lowcountrymiata
Masters Miata
RAGS 074