Hi Guys,

I'm trying to diagnose a problem on an Audi A6 1995 2.6... I hope one
of you can help!

Put simply, the water (and then engine) overheats if the A/C
compressor is NOT switched on.... I replaced the water tempurature
gauge... but it has made no difference!

The radiator fan just doesn't come on unless the AC is on...

Any ideas?

Thanks in advance.

Sam.