2000 A6 2.7T overheating

[Huw Powell]

> I appreciate the suggestion but the symptom I am describing is caused
> by the complete failure of something,  i.e. a stuck thermostat, not a
> small leak.  In another car I might suspect a broken fan belt but
> that isn't the problem here.

So, just for clarity all around, the couple of quarts was lost *during* 
the overheating through the pressure cap?

If so, let's see, it could be:

*Tstat stuck closed - should be easy to replace?
*Water pump failed - would also kill pass. compartment heat, I think?
*Radiator fan/relay/fuse/sender failed - should be easy to test?
*Head gasket leak - might put some coolant in oil, can be tested for?
*System clogged somewhere - like WP, no heat should be a result?

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/