88 80Q, Runs rough upon starting

[Huw Powell]

> If car is allowed to sit 5-10 minutes after shutting off, (or even on a cold
> start) upon restart car fires, then starts to stumble and drop RPM's.
> Feathering gas pedal, etc, doesn't help. But, discovered that full throttle
> will get the rpm's up, but when let off it still runs rough. It clears up in
> a minute or two, but something's not quite right

> Then on to the Control pressure actuator. Following Bentley, getting correct
> voltage to unit, but upon following procedure and checking for 10ma/100ma
> (utilizing digital meter) I only get the 10ma. Opening throttle fully
> doesn't change anything (as it should per the manual)...
> 
> The Bentley is just tad vague... My interpretation of the Bentley CPA test
> is "voltage is good, WOT switch has no effect, replace CPA! I'm also not
> getting decent ma readings when car is running.
> 
> Thoughts, BTDT???? Sure this is a sensor issue of some sort and can, (and
> will) be easily fixed. Need to resolve this quickly!

Sounds like the temp sender died - ECU thinks engine is already warm.  I 
think they run about $20 or so.  Remove and test with ice water/very hot 
water and your ohm meter per your Bentley specs.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/