 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Audi Cars / December 2006Electrical fault (with radiator fan) in 1987 5-cyl Audi?
I have a 1987 Audi 100 with the 5-cylinder 2 litre engine. When the coolant has reached operating temperature, the fan goes on normally for several seconds at a time. The problem is this: when the engine is switched off, the fan goes on again, whether it was just on or not. And it keeps going. Switching the ignition on (without starting the engine) turns the fan off. I haven't left it running long enough to see how long it takes to stop running on its own in case I run down the battery, but I do know that if I disconnect the fan while it's running and reconnect it several hours later the fan willl have stopped. Also, when the fan is running in this state, it has been difficult to start the car (not enough power to turn the engine) but I think I've sorted that by tightening the -ve connection on the battery. Does this sound like an electrical fault or possibly a fault with the thermo switch which activates the fan? Thanks in advance for any suggestions. I had an 85 Audi 5000 that had a similar problem, and it turned out to be a stuck fan relay. You can remove the fan relay temporarily to avoid running down the battery when the engine is off. Replacing the relay with a new one solved the problem. I hope it will solve yours...  Signature-- Stephen Clark 89 Audi 100 Houston, Texas USA See my Audi in the Registry at www.audiworld.com! >I have a 1987 Audi 100 with the 5-cylinder 2 litre engine. > [quoted text clipped - 17 lines] > > Thanks in advance for any suggestions. OTOH, the OP didn't say if the engine is actually the 2.2L turbo. If that is the case, it has a turbo after run pump and it also activates the radiator fan after the ignition is turned off if the coolant temperature is high enough. If this is the case it could run for a number of minutes before turning off. Still, it might just be a stuck relay like you suggest. > I had an 85 Audi 5000 that had a similar problem, and it turned out to be a > stuck fan relay. [quoted text clipped - 5 lines] > > I hope it will solve yours... >OTOH, the OP didn't say if the engine is actually the 2.2L turbo. If that is the >case, it has a turbo after run pump and it also activates the radiator fan after >the ignition is turned off if the coolant temperature is high enough. If this is >the case it could run for a number of minutes before turning off. No, it's not the turbo version. >Still, it might just be a stuck relay like you suggest. > [quoted text clipped - 7 lines] >> >> I hope it will solve yours... >I had an 85 Audi 5000 that had a similar problem, and it turned out to be a >stuck fan relay. [quoted text clipped - 5 lines] > >I hope it will solve yours... I'll certainly give that a try, thanks. The Haynes manual is less than helpful on the subject. >I had an 85 Audi 5000 that had a similar problem, and it turned out to be a >stuck fan relay. [quoted text clipped - 5 lines] > >I hope it will solve yours... There are actually two fan relays - the smaller type 214 and the larger type 235. Replacing the larger one solved the problem - the fan only runs on for two minutes or so now. Thanks again! >>I had an 85 Audi 5000 that had a similar problem, and it turned out to be a >>stuck fan relay. [quoted text clipped - 11 lines] > > Thanks again! For future reference, there are actually three fan relays. Fan speed one and two relays are in the main relay box just in front of the drivers side windshield. Fan speed three (fastest when the engine is very hot) is a double wide relay in the Aux relay panel under the dash on the drivers side. |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2009 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.