[s-cars] Intermittent stall

[Jerry Scott]

I still may have the chips that came out of my 93 when the Hoppen upgrade was done, and would only have a few thousand miles on them.  Would that help anyone?  I no longer have the car, so I don't need them.
Jerry

-----Original Message-----
From: S-CAR-List [mailto:s-car-list-bounces at audifans.com] On Behalf Of theringmeister at triad.rr.com
Sent: Monday, August 03, 2015 7:10 PM
To: Tony Curran; 'Duncan Thomson'; 's-car list'
Subject: Re: [s-cars] Intermittent stall

Exactly my point, Tony. I did most of those things chasing my issue and spent a lot of needless money on things that weren't the culprit.... mainly because I didn't want to believe my ECU was the culprit. 

Sent on the new Sprint Network

----- Reply message -----
From: "Tony Curran" <tony.curran at sympatico.ca>
To: <theringmeister at triad.rr.com>, "'Duncan Thomson'" <thomson.duncan at gmail.com>, "'s-car list'" <s-car-list at audifans.com>
Subject: [s-cars] Intermittent stall
Date: Mon, Aug 3, 2015 8:07 PM

There's a whole long list of things to investigate...

POs,
Coils,
Ignition wiring,
Ungapped spark plugs,
Fuel pump,
Fuel pump relay,
O2 sensor,
Vacuum leak,
MAF - clean,

Good luck

Tony
96 S6


-----Original Message-----
From: S-CAR-List [mailto:s-car-list-bounces at audifans.com] On Behalf Of theringmeister at triad.rr.com
Sent: August-03-15 7:16 PM
To: Duncan Thomson; s-car list
Subject: Re: [s-cars] Intermittent stall

Depending on your affinity for internet forums, you may want to pose the question over on the QW (UrS car specific) forums. That said, I never had a complete stall at idle (that I recall) but I had a nasty 'hiccup' where my car would cut off for a split second and then be back running the next while driving. A lister was kind enough to loan me an ECU to swap in and sure enough that cured the issue. What I recall is that the ignition driver chips are failing and the cause. Steve Eiche has the lowdown but unfortunately there isn't a replacement chip out there.  If I were you I'd see if you can do the same with a known-good ECU. I did a whole lot of part swapping/replacing, only to find the ECU was the cause.  

Hope that helps

Wylie Bean
Greensboro NC



Sent on the new Sprint Network

----- Reply message -----
From: "Duncan Thomson" <thomson.duncan at gmail.com>
To: "s-car list" <s-car-list at audifans.com>
Subject: [s-cars] Intermittent stall
Date: Sun, Aug 2, 2015 8:51 PM

Hey folks,

I know I should probably do a lot more searching before I ask, but email volumes seem low!
I am getting an intermittent stall at idle. It is a clean cutout, and the engine just goes straight from running smoothly to stalled, instantly.

It seems to do the same thing when running, but with some extra revs on it catches again and keeps running.

Any ideas where I should look first?

Is it possible I'm losing spark on 3/5 cyls from a dodgy POS?
More likely to be Crank position or something else?

Any advice gratefully received!

Cheers
Duncan
'93 UrS4 Avant
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