'92 S4 electrical gremlins

[Robert Rossato]

I believe your problem is related to the central vacuum pump or control
module under the rear seat.  These were problematic on the '92 S4s (and
presumably 100s).  Replacing it with one from a later car, like '94
S4/100 or '95 A6/S6, should take care of it.

Old p/n: 4A0 862 257B
New p/n : 4A0 862 257J

Bob

> -----Original Message-----
> From: quattro-bounces at audifans.com 
> [mailto:quattro-bounces at audifans.com] On Behalf Of jesper moreau
> Sent: Saturday, April 01, 2006 6:04 PM
> To: list submissions
> Subject: '92 S4 electrical gremlins
> 
> 
> There is about 0.33A drain when the car is off. Pulling A3, B1, and
> fuse 8 stops it.
> Replaced window relays - no better. There is other odd behavior.
> Pulling fuse 8 makes some window relay click. Sometimes 
> relays chatter.
> Shutting off the ignition will sometimes close the sunroof and/or lock
> the doors.
> Sometimes everything works fine. I'm sure it is all related.
> Probably intermittent wiring harness short or other mal-connection.
> 
> I figure a problem might be in the locking/ignition system since it is
> somewhat connected for key operation of the windows and locks.
> 
> Anyone care to point me in a better direction as my 
> experience is a bit
> limited outside of the 5KTQ and 4KQ.
> 
> as always thank you all in advance.
> 
> --
> Jesper Moreau
> '88 5KTQ rocket - 239HP CIS Daily driver
> '87 5KTQA Projekt eminent - future 420HP EFI  Daily driver
> '86 5KTQ stocket - gone but not forgotten
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