Re: ...the mystery of the stalling 20v Coupe Quattro

["Rudy Consolacion" <rconsolacion@kumhotech.com>]

I had similar symptoms with my now-departed 87 5kq and traced it to 
the oil dipstick o-ring that was not sealing properly.  Good luck!

Rudy C.
87 5ktq
97 a42.8q

> Date:          Thu, 2 Oct 1997 07:41:53 +0500
> From:          schulz@iatcmail.ed.ray.com (Peter Schulz)
> Subject:       ...the mystery of the stalling 20v Coupe Quattro

> 
> Hi folks!
> 
> My frustration with the off-load stalling of my CQ continues...
> 
> To reiterate, my coupe quattro will stall randomly when the car 
> is taken out of gear, as when coming to a stop. RPMs drop to 
> 0, and then the idle restabilizes.  Sometimes.  Other times
> it completely stalls out. The is most evident
> when, for example, pullin into a parking spot...This happens
> on Dry days and wet days, engine hot or cold.
> 
> I've removed and cleaned the ISV repeatedly with brake cleaner
> and carburetor cleaner ( It's two years old). I removed and
> lubricated the solenoid from the ISV
> I've cleaned the contacts. Chris Semple at Autobahn downloaded
> the fault codes.  They came up 4444 (ok).
> 
> The car has the updated crankcase breather hose.  I've tried the 
> butane torch (unlit of course) check on the vacuum lines. (at least
> the ones that I've been able to identify. Bentley is NOT alot
> of help here.)
> 
> When I disconnect the ISV lead, the engine immediately bucks, then 
> stalls.  If I reconnect it before it completely stalls, the car 
> idles normally.  Without the ISV connected, the car will not start.
> 
> When it's not stalling the car idles normally.  No wander, no drift.
> O2 sensor is two years old. Gas filter is 1 year old.  I usually run 
> the car on Texaco 93 octane.  Trying different gas and different 
> stations has not made a difference (tried Mobil for a while). Cap,
> rotor, plug wires, plugs are two years old.
> 
> HELP! My wife refuses to drive the car because she's afraid of it 
> stalling repeatedly in traffic.
> 
> Thanks for any advice!
> -Peter Schulz
> 1990 Coupe Quattro
> schulz@ed.ray.com
>