HELP! engine overheating :(

**PRVWing** · 08-16-2008 01:01 PM

Ok, so this morning went for a drive, while driving between my house and the highway I noticed that the air conditioning would not work properly, air came out of the vents kinda warm. Then at the highway it was cold as normal. Did some spirited driving with engine temps perfect. But when I got to the city, lights, intersection, etc. the engine would start to overheat very quickly. I shut off the engine, let it stand for a couple of minutes and the temps had gone down, drove a bit more and again it over heated. Flat-bed truck took me home. I then found that my Fans are not working! They were working yesterday since I remember giving my engine bay a check with the engine turned on.

Does anybody have an idea? I think it may be a blown fan relay... But I have no clue were its located...

**bigbro** · 08-16-2008 01:03 PM

I think I read that it is in the ecu box. http://www.audizine.com/forum/showth...ight=fan+relay

also try this thread http://www.audizine.com/forum/showth...ight=fan+relay

**PRVWing** · 08-18-2008 06:19 AM

do you know by any chance which relay is the one for the fans?? im going to buy one but before opening anything in the engine compartment i would like to know if there is more than one inside de ECU box... thanks!

**PRVWing** · 08-18-2008 09:32 AM

I was just told by a local shop, that it could be the fan computer... that its located next to the left headlight... and that it could be a combination of the fans and fan computer and that its kinda common... has anyone heard of this being a common problem?

**AudiA4Turbo22** · 08-18-2008 09:36 AM

try checking ur water pump mine had the same symptoms

**kepone** · 08-18-2008 10:04 AM

I had that exact same problem about a month ago, mine turned out to be the fan speed controller, which is located somewhere close to the front radiator/headlights. My insurance company covered it, but i think it was about a $400 part.

My car does not overheat at standstills anymore, but the AC still seems to warm up rarely, i dunno if it is just the FL heat overpowering it or if i still have other issues, been over 100 degrees constantly here in South FL

**F16HTON** · 08-18-2008 10:11 AM

If you have about 65K on your motor it is the waterpump. Have it and your timing belt replaced.

**CO AVANT** · 08-18-2008 10:24 AM

....and replace the water pump with a new one from the older model 1.8T's since they use metal impeller blades instead of crappy plastic impeller blades like the AMB (B6) water pumps.