2004 A6 radiator fan keeps running

I think the new sensor is fine. The behavior is identical now as before the
changed sensor. I noticed today that if I start the car for only 30 seconds
and then shut it off, the fan still comes on for 10 minutes and then turns
off. I was also assuming it was the relay but the repeatability of the
problem and the timing for the eventual shutoff is making me wonder. I have
a call into the mechanic to see what other ideas he has. Any other thoughts
are greatly appreciated...


"TonyJ" wrote in message

>
>
> 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.
 >> Stay informed about: 2004 A6 radiator fan keeps running 

On Sat, 05 Jan 2008 00:46:21 -0600, TonyJ wrote:

>
>
>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.

If it's like my 1999 A6 then the fan runs all the time when the a/c is
working. Makes a hell of a noize.

M.
 >> Stay informed about: 2004 A6 radiator fan keeps running