Check engine light on 80Q

[blarson at zeiss.com]

My 1988 80Q did exactly the same thing.  It turned out to be the knock sensor.
About $43 at megaparts.com, or try rod at www.thepartsconnection.com  Also, I
have a pair of used computers for this car, I would sell both of them to you for
$40 plus shipping if you think your ecu's have a problem.
Good luck,
Brian

message cut

From: Tessie McMillan <tessmc at drizzle.com>
To: <quattro at audifans.com>
Subject: help - 80Q engine suddenly lags on accel./check engine light
 intermittent

What is happening now -- from a day after the track -- is that on
sultry days or rainy days primarily, my check engine light will suddenly
come on about 5 minutes into driving. Then the car becomes sluggish at
acceleration and feels like it just isn't breathing properly.


message cut