[s-cars] ARGH!! Stalling at idle

[Mark Pollan]

Goodness gracious, you guys are the balls!!  Within 15 minutes 3 replies.

The ISV is new new, not just to me.  I have checked the MAF to the best of
my abilities with a Fluke DMM and all is well.  A kind local to me lister
let me twice borrow his spare MAF - and ISV too - but this was back in the
summer time.  All seemed well with this "new" setup in the summer but
returned with a vengeance during the second borrowing and lower ambient
temps.

Throttle position sensor?  Now that is a new one.  I'll have to do some
testing.  Anybody know if the TPS is the same from an '86CSTQ?

The temperature relationship thing keeps gnawing at me.  Well actually it's
the stalling thing that is biting me in the arse.

Keep 'em coming please!!

Mark

-----Original Message-----
From: Herrick, Marty [mailto:mherrick at ringdu.com] 
Sent: Thursday, February 10, 2005 9:49 AM
To: Mark Pollan; s-car-list at audifans.com
Subject: RE: [s-cars] ARGH!! Stalling at idle

Mark,

Have you checked the MAF sensor.  I had similar symptoms, and the same
Adaptation Limit Reached code before my MAF completely died on me.

Marty Herrick
95.5urS6
Milwaukee, WI


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Mark Pollan
Sent: Thursday, February 10, 2005 8:32 AM
To: s-car-list at audifans.com
Subject: [s-cars] ARGH!! Stalling at idle


Hi All:

 

I am posting again on this because I am getting frustrated beyond all
get-out trying to figure this one out.  Please, please put your thinking
helmets on before I take this one to a shop for diagnosis.

 

I start my car in the morning and drive with little to no idling.  The
symptoms are that when the car is cold and I get to a stop sign or
red-light the RPM will dip more or less dependent on ambient
temperature.  On cold days the engine will die.  I have replaced within
the last 5K miles:  New ISV (thanks Paul K. for the kind offer of your
spare), new plugs, new plug boots, fuel filter.  I pressure tested the
intake with nothing plugged up to about 15psi and get just a tiny leak
at the MAF to turbo by the turbo.  VAG only returns one code which is
Adaptation Limit reached - or something like that.  When the car is
fully warmed up after 4 or 5 minutes of driving all symptoms disappear.

 

This is soooo temperature related that I have to believe it has
something to do with a temperature sensor (MFTS replaced 15K miles ago;
Oil temp sender replaced 10K Miles ago) or perhaps my O2 "heater" is not
working properly.

 

Any and all thoughts are hugely appreciated!!!!

 

Regards,

 

Mark

95.5 S6 - 88K miles

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