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Cooling system question

In message <Pine.A32.3.91.970609095957.52178B-100000@gnu.uvm.edu> "Louis A. Mulieri" writes:

> Given all the feed back 
> control in this car I am surprised at this variation in engine 
> temperature and wonder if it indicates some incipient cooling system 
> failure or does it mean that the cooling system has just barely enough 
> capacity for heat dissipation so that a little stress overwhelms the 
> control mechanisms.  	
> 	Another question.  Given this behavior I was hesitant to use the 
> a/c as I thought this would exaccerbate the problem but in fact with the 
> a/c on the engine temperature ran lower and was more steady--I don/t 
> understand this; does anyone have an answer.

Switching the a/c on automatically runs the radiator fan at a low setting.
It sounds like it's not running when it should.

 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club