90Q 20V Engine problems

[Grant Lenahan]

2 thoughts:

1.      when cold, the mixtures is enriched.  When warm .....
2.      air mass sensor not reading right (ditto above)?

Grant

At 08:19 PM 8/21/00 +0200, Jose Vicente wrote:
>Hi all,
>
>I have a '90 90 Quattro 20V which has been very sluggish lately. Basically
>the car runs fine when cold, once it warms up it is very slow. If I keep it
>floored to redline it cleans up at around 4500-5000 rpm and then breaks up
>and cleans up randomly as if timing was being advanced and retarded but
>there is no consistency. The car is freshly tuned up and there is no smoke.
>I replaced the Oxy sensor and just about everything else except the knock
>sensor.
>
>Any Ideas or suggestions?
>
>Thank you
>Jose
>
>Please reply privately to
>jose-vicente at dsvsamson.com
>
>
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>Quattro at audifans.com
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==========================================
Grant Lenahan
glenahan at telcordia.com
gfl at erols.com
gfl at alum.MIT.edu