Aux cooling fan will not shut off...
 

<center><img src="http://www.qis.net/~jpaschall/A6%20Avant_small2.jpg"></center><p>Can someone with a Bentley manual or who is really inteligent :--) point me in the right direction with this problem. Last fall I had a mishap where jumper cable were reversed on my car. Luckily no major damage, (if you dont count replacing the alternator twice in 30 days) but one issue that is still unresolved is that my aux cooling fan will not shut off. I had to remove the connector from the wiring harness. Now that it is getting warmer I need to fix it. A schematic would make things so much easier. I am assuming that the fan is controlled by a relay or something that in turn is activated by the thermostat. Help!

Thanks,

Lonnie

Hijack! My car sounds like a jet engine when I run the AC....
 

....especially when I turn the car off its like a turbine spooling down, I sort of like it, it sounds like a Porsche.

It was not as loud before, but ever since the accident/conversion when Audi recharged it and fixed it, it sounds louder to me.

Its also much colder then ever before so it definetly aint broken.

Any ideas why my cars AC sounds like a jet engine now?

Try disconnecting the coolant temp switch
 

at the bottom of your radiator. If the fan shuts off then it's a bad switch.

The aux fan is running on high
 

Have you checked the climate control for any errors?

All is well says the VAG.

Are you running with the A/C on at all times?

Exact symptoms of my car. See the link I am about to post in this thread...

Had similar problem in my allroad 3 years ago.
 

check this link for complete details:<ul><li><a href="https://forums.audiworld.com/allroad/msgs/49702.phtml">https://forums.audiworld.com/allroad/msgs/49702.phtml</a</li></ul>

No, I used it twice for 5 minutes to make sure it worked.

Thanks, I just went to check and...
 

....both fans seem to be running fast, I cant isolate the noise to the front or rear fan. When the AC is off, both fans spin by hand freely so I have no idea.

Its cold, it blows and they both seem to be running fine so ?

At least I like the jet turbine noise it makes ;)