[s-cars] overheating dilemma

[DGraber460@aol.com]

In a message dated 2/11/2006 4:37:14 P.M. Mountain Standard Time,  
T.Guttmann at ms.unimelb.edu.au writes:

At the  risk of abusing the list with a non-Scar question, my daughter's
Audi 80  2.6litre V6 quattro is overheating, and we don't know why! The
radiator,  the water pump and the thermostat have all been removed and
checked. The  head gasket has been tested two different ways, and seems to 
be sound. No  water in the oil. No leaks evident in the hoses, cooling system 
 holds
pressure. Fan sensor has been replaced, and fans seem to kick in  
appropriately.
Ambient temperatures here (Australia) are no more than 30C  at present (86F), 
and the situation manifests itself in stop-start city  driving.

My mechanic is running out of ideas! Any inspiration from the  collective
brotherhood (naturally, this is used ultra-collectively to  include any 
sisters
out there)?

Many thanks in advance for any  suggetions!

Tony  Guttmann
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Some of the American V6s use a double fan setup, one of which is run  via a 
viscous clutch. Any chance that might be your car and the VC is  slipping?
 
Dennis
Denver