AndrewsQuattros

When I got my 90 a couple months ago, one annoying thing was that the cooling fan ran all the time. I finally figured out that If I pull out the fuse for the HVAC, the fan turns off and runs its normal cycles (with the coolant temp). Nice, but now I have no Heat/Defrost/AC. At the time, I tried unpluging all of the AC connections (high pressure sensor etc..) the fan still ran. So I'm really wondering what this can be. Any ideas? Also with the HVAC plugged in, I only get the high blower fan setting on the dial. How would I fix the rest of the settings to work too? Thanks

MikTip

then a voltmeter. This, in an effort to determine which component is the problem. Could be the relay? Temp sensor? Rad fan switch? After-run switch? Wiring?

Basically its a process of elimination. ;O)

AndrewsQuattros

I know it's something in the HVAC... but thats a good idea to get a wireing diagram. Need a shop manual! (cant find on ebay) The wonderful world of audi wiering!
Thanks

MikTip

The CD version, of the manual, does allow pages/pictures to be emailed! ;O)

AndrewsQuattros

or where can I get a CD version from?
Thanks,

MikTip

Ask around the forum? ;O)