1990 Coupe Quattro......engine light keeps reappearing...and I also need help in answering 5 questions.

[ACAdelhoch]

Help!

My 1990 CQ with 131k miles is worrying me.

ENGINE LIGHT ISSUE
When accelerating the engine light will come on and the engine will lose
power. It sometimes shuts right back off or will stay on with a lack of
power for minutes only to restore itself. The car has never overheated or
been mistreated.

1. On occasion, when starting the car up, the fuel pump makes a strange
noise kind of like a “ whhhaaasssshhhhh” like its struggling to get fuel ???
During the summer here in Las Vegas when it’s nice and hot, the fuel pump
buzzes constantly, especially after hard driving with the a/c on. My
mechanic says “ you have water in your fuel”. I’m not sure of that.

2. I noticed that my throttle potentiometer is broken under the throttle
body. How important is it to replace the throttle potentiometer if broken?

3. I was told that the distributor rotor is glued on and cannot be replaced.
Is this true?

4. My car has been running very rich for awhile now and my gas consumption
has been high too, even AFTER replacing the O2 sensor. What gives? I’m not
sure if I have several problems or just one.

5.I am considering the removal of my middle muffler for improved flow and
sound? Is there any serious consequences to consider before doing so. Some
people say it makes no difference except some small torque lost at low RPMs.
Anyone know any better?

6. Has anyone heard of the catalytic converter getting clogged or burnt out
on our cars?

Please respond at your earliest convenience.

Yours truly,

A dedicated AUDI man,


Alvin Adelhoch

ACADELHOCH at lvcm.com <mailto:ACADELHOCH at lvcm.com>

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