RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

Hi folks!
I have noticed that my cooling fan comes on when i start the car and stays on until i turn off the ignition, regardless of weather. Also, i am losing boost occasionally. The dealer fitted a new coolant temp' sensor recently but that aint cured it. I have also fitted new EGT's, an new MAF and new diversion valves. My air con isn't working the best, could this be connected?? I have had the car VAG Com'd and that shows only one fault...over fueling on boost.
I'm starting to pull my hair out a bit as this is costing a small fortune and isn't curing the problem.
Any input would be appreciated.

Cheers.

There a few different coolant temp sensors. Which one did you have changed? There will probably be some sort of thermal switch for the fan.

Probably the Fan Control Module, located under left-hand chassis rail at the very front of the car. Common faulty part. Replacement is upgraded. around £140 IIRC.

Mine has been perfect since I changed it a few years back.

Finally got to the bottom of it!!
My cooling fan module looked fine but the wiring had rotted internally after years of water damage. Was an utter bitch to get into. The front had to come off for access. Car is going perfectly now.
Heaps of power, heaps of fun!! Well worth the hassle!!