Re: 2004 A6 radiator fan keeps running

Steve-public wrote:
> I have a 2004 Audi A6 2.7t with about 35k miles.  Radiator fan is
running 
> for 10 - 20 minutes even when the engine is not hot, for example, after
a 1 
> or 2 mile drive.  Dealer did not show any diagnostic faults and
recommended 
> replacing the temperature sensor,  Had the local shop replace the sensor

> (dealer wanted over $300) but the situation remains.
>
> So the questions are:
>
> 1. Is this normal behavior that I just don't notice before?
> 2. Any other ideas for what to check or replace?
>
> Thanks for the help.
>
> Steve 
>
>
>   
The thermo sensor would have been my guess. If you are sure that the new 
one is good I would suggest sticking relays. If the speed of the fan is 
the slowest speed it might be related to the AC that causes the fan to 
run in the slow speed when the compressor is operating.