Re: quattro-digest V3 #877

[baselope@netwide.net (Robert Riley)]

>I've a problem with my ur-q which started about six month ago and has slowly
>been getting worse. Symptoms are on startup after sitting overnight engine
>fires almost immediately (good) but if I press the gas pedal AT ALL it
>starts to die. It will remain at idle no problem but don't touch the gas!
>After idling for about 4-5 minutes it will then respond to the pedal but
>very poor on power and very rough - bad mis-firing which does not seem to be
>confined to any one cylinder. This applies throughout the whole rev range
>from idle to 6500rpm. Idle very lumpy when warm. So far I have replaced the

This is almost always caused by either a poor connection on the water 
temp sensor due to corrosion, or the sensor itself being faulty.  It is 
only a $24 part from the dealer if you have the 2 pin connection or about 
$50 if you have the 4 pin.  The 4 pin model is more prone to leaking, 
which causes the corrosion.  The 2 pin version usually just goes bad after time.

The sensor is located on the coolant hose neck on the head and more often 
than not it is the one on the bottom.


Hope this helps!