type44 rough start and rough idle when cold.. CO off? any ideas?

[Huw Powell]

> in the mornings, my  86 5kt usually starts right up..but it idles like crap, 
> around 4000 rpm...if i shut it off, and restart, it will idle fine, for like 
> one minute or 2 then it will drop back down to 4000 rpm and idle like crap..if 
> i rev the engine, the idle will drop so low once rpm's kick back down it will 
> stall out. ..  car will continue to do this until its warmed up..   if i shut 
> it off after ive driven it, when its warm, the car starts and idles fine.   it 
> only has this low idle problem when its cold.    any ideas? 

Amidst all the other suggestions, I would suspect the temp sender for 
the ecu.  The ecu probably always thinks the engine is warm, hence poor 
behaviour when cold - too lean.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/