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justin's Avatar
 
Join Date: Apr 2001
Location: Cleburne,Tx
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Question I have a problem

Ok, when my car is off and the key is out of the ignition, I can turn my a/c fan switch on and the motor will blow, then I get out of my car, the driverside fan is running, so I think,ok it must be warm. I come out about an hour later and the fan is still on, so I pop the hood and unplug it. What would cause this, fan relay? I think the passenger side fan is running all the time the key is on,but I'm not sure. I replaced the thermo switch last summer,but never the fan relay.
Thanks

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Old 12-04-2003, 12:10 AM
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Check the temperature switch on the driver's side of the radiator. With motor cold, pull leads off and check resistance across the two prongs on the thermostat. Resistance should be infinite when motor is cold.

The thermostat switch looks like a round plug with two electrical leads. It is about 8 inches(?) from the top of radiator. I am not sure which switch you replaced - the one on the block or the one on the radiator.
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Lawrence
1986 951
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1987 328GTS
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Old 12-04-2003, 03:58 AM
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Lawrence, I replaced the one on the radiator with a lower temp one.
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1980 928 5 speed and a few mods..........
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Old 12-04-2003, 10:58 PM
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I replaced my thermoswitch twice in two years.
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Old 12-04-2003, 11:54 PM
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If I were you I would check the switch anyway. If you don't have a multimeter, just pull one of the leads off the SWITCH. If that stops the fans and the radiator is cold, then your switch is sticking on.
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Lawrence
1986 951
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1987 328GTS
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Old 12-05-2003, 04:18 AM
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Lawrence, ok I did what you said, and well the fan still runs,I also unplugged the fan relay and it still runs. I don't know man.
P.S. I even unpluged the temp sensor,no go.
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Texas hosts the 928 Owner’s Club OCIC in 2009
www.928ocicdfw09.com
1980 928 5 speed and a few mods..........
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PCA member
Old 12-06-2003, 03:57 AM
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Pull the AC relay and see what happens.

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Hugh - So Cal 83 944 Driver Person
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Old 12-06-2003, 09:40 AM
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