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Radiator fan Won't Turn Off

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Old Feb 22, 2009 | 04:21 PM
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roni_xxp's Avatar
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From: Kahului, HI, USA
Default Radiator fan Won't Turn Off

My Radiator fan only turn off when i turn off the ignition key, i tried disconnected both coolant sensors and still is on..what could be the problem?
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Old Feb 22, 2009 | 05:37 PM
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From: Independence, KS, USA
Default Re: Radiator fan Won't Turn Off

Stuck relay. There are several relays near the front, driver's side of the fender. Just turn on the key (don't even have to be running) and pull them out one at a time until the fan stops.

They are black boxes about 1" square. I think there are four, but I might be wrong. They are all grouped together.
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Old Feb 22, 2009 | 05:41 PM
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Default Re: Radiator fan Won't Turn Off

BTW: To confirm that it is a relay, swap one of the other relays that has the same pins. The fan should stay off. If it comes back on, you either have multiple bad relays (repeat procedure with another relay) or there is an electrical short causing the relay to energize.

There are two relays (one for each fan) involved. One operates by the coolant temperature, while the other comes on any time the AC compressor is on.
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Old Feb 22, 2009 | 06:35 PM
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Default Re: Radiator fan Won't Turn Off

Originally Posted by duanes
BTW: To confirm that it is a relay, swap one of the other relays that has the same pins. The fan should stay off. If it comes back on, you either have multiple bad relays (repeat procedure with another relay) or there is an electrical short causing the relay to energize.

There are two relays (one for each fan) involved. One operates by the coolant temperature, while the other comes on any time the AC compressor is on.
alright thanks i will try and do that..
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