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Old 04-15-2011, 09:40 PM   #1
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Default Radiator Fan Not Working

My radiator fan isent working. Any ideas, I don't think the motor is bad. Any ideas? I don't wanna spend too much money either. Thanks!!!
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Old 04-15-2011, 09:53 PM   #2
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What fan are you talking about? Mech or electric? Electric should only come on with a/c or when the temp reaches 210 (I think 210, someone correct me if I'm wrong)
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Old 04-15-2011, 10:29 PM   #3
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Jump power with wires direct to the fan motor plug from battery, this will prove if the fan motor is good or not. Next could be the relay, trace the stock wires back, next could be the temp sensor. As Sthon advises, the elec fan is an auxilliary and only comes on in a high temp condition.
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Old 04-16-2011, 08:28 AM   #4
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On at 218F, according to the FSM.
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Old 04-16-2011, 10:31 AM   #5
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i have a 1989 and my electric fan stoped working it was th temperature sensoe in the radiator on the driver side at the bottom u can unplug the conector and jump the connector over on the wiring harnes side and the fan should come on and stay on if the sensor is bad
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Old 04-16-2011, 10:41 AM   #6
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Quote:
Originally Posted by djb383
On at 218F, according to the FSM.
Thanks
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Old 04-16-2011, 10:52 AM   #7
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Oh alright, I thought it had tobe on! Phew lol If you stood infront of your jeep looking at the motor,im talking about the fan on the right. So it only kicks on when its wicked hot? Also my ac don't work so does affect anything? lol
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Old 04-16-2011, 11:19 AM   #8
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Quote:
Originally Posted by Tatokee
Oh alright, I thought it had tobe on! Phew lol If you stood infront of your jeep looking at the motor,im talking about the fan on the right. So it only kicks on when its wicked hot? Also my ac don't work so does affect anything? lol
Sounds like you're fine then.
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Old 04-16-2011, 06:27 PM   #9
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Turn your heat on to defrost. Think fan should kick on then too. Mine does.

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Old 04-16-2011, 08:04 PM   #10
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i know on newer jeeps that if the electric fan dont kick on the ac pump wont engage but not sure about the older ones
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Old 04-16-2011, 09:10 PM   #11
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Other way around....on '00/'01s the efan doesn't turn on when the a/c is engaged.
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Old 04-16-2011, 09:16 PM   #12
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On my 89 the AC is pooched, (future on board air compressor project) and has nothing to do with the electric fan. the elec fan used to come on in summer on really hot days when the temp would rise, ok 218 seems about right according to gauge, since new rad/pump went in the heat doesn't rise and fan doesn't come on. Jumper tested and the fan and relay work fine, assume the heat sensor still works, just the new parts don't get hot. Base line hear is on the 89 the elec fan has nothin to do with my AC.
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Old 04-16-2011, 09:43 PM   #13
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i did work at a jeep dealer ship and on the 2008 wranglers the ac dont engage when the fans not runnin cus i remeber a woman comin in and said her ac didnt work she had a pichure infront of her temp gauge so she didnt relize her jeep was over heatin also all she was worried about was the ac lol
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Old 04-17-2011, 11:29 AM   #14
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What you're describing is a malfunction condition/situation. Normally, on '99 down XJs, switching on the a/c compressor or 218F coolant temp turns the efan on.....'00 up, efan turns on at 218F coolant temp only.

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Old 08-10-2011, 10:06 AM   #15
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Default electric fan not working

Where is the electric fan relay and the electric fan sensor located?
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