Poor running 90Q

Lino M. Valadas l.valadas at rogers.com
Mon Aug 16 10:39:37 EDT 2004

Pull the codes.

Check the full throttle switch operation.

Check the fuel distributor plate.

have the fuel mixture checked.

Good luck. I have similar problem with mine but not quite so severe.


----- Original Message -----
From: "David Ellis" <David at icallshotgun.com>
To: <quattro at audifans.com>
Sent: Sunday, August 15, 2004 8:15 PM
Subject: Poor running 90Q

> Hi Gang
> I just got a 1989 Audi 90Q 10V.  It had been sitting a while, so I changed
> the oil/filter and spark plugs and cleaned out the ISV, put a fresh tank
> Super unleaded and a new battery.  Everything looks OK, & engine cylinder
> compression is good on all 5.  The car will start and run but idles very
> and when you rev it up it sounds like it is missing or not running on all
> cylinders.  And it is hard to get it to rev over 3500 RPM in neutral.
> Needless to say it does not drive well at all, you have to slip the clutch
> just to get it up the driveway.
> I checked all the fuses, especially the ones under the red cover that say
> "MOTOR-MOTEUR" which I believe powers the ECU
> Any other ideas on what to check?
> Thanks for any ideas!!
> David E.
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