1988 Audi 90 Quattro

[George Siambis]

>Hi  until someone with more Audi mechanical experience replies... I had the
Likewise, my '88 90q has had some of the other problems you described:

>>Possibly related to the problem....
>>Heating unit for the car seats clicks when it has been on for a while.
Mine too, the clicking sound is from under the dash and I make it go away by
adjusting the heat level on the seat in either direction until it stops.
Fixing this involves cleaning or replacing the seat heater relays under the
dash, I believe.

>>The ABS brake indicator light comes on behind the steering wheel and the
>>dash push button will not engage the brake system.
Is this only from a stop?  My rear diff lockswitch (next to handbrake) is
very sensitive and when it 'accidentally' turns on the ABS system is
disabled independently of the ABS switch on the dashboard and it has no
effect.  Look for the light on the rear diff lock switch to be on if it
happens again, and if so, just turn off the diff lock.

Just guesses, of course . . .  and sorry I can't help you with the engine
problem.

Good luck,
-George