Cooling fan problems, please help
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From: Greenville, Raleigh NC
Cooling fan problems, please help I hope this is the right place for this, if not please move it.
So I have a single turbo setup on my car and for the time being a single puller fan. Today it just quit working, causing the car to overheat. I have the fan tied into the factory harness for the stock fans connected to fan #1.
I checked the 2 fuses under the hood (40 amp and 10amp) I switched the relays for fan 1 and fan 2 to no avail. I tested the fan itself by jumping a hot wire and ground wire from the bat. to the fan and it still turns on fine.
When I check the wiring from the harness with the key on and the car at a temp the fan should come on (but car not running) there is no voltage on the fan control wires.
Anything I missed or any idea what might be the problem? I don't know how to check the relay other than switching it with the other relay of the same kind for fan 2.
So I have a single turbo setup on my car and for the time being a single puller fan. Today it just quit working, causing the car to overheat. I have the fan tied into the factory harness for the stock fans connected to fan #1.
I checked the 2 fuses under the hood (40 amp and 10amp) I switched the relays for fan 1 and fan 2 to no avail. I tested the fan itself by jumping a hot wire and ground wire from the bat. to the fan and it still turns on fine.
When I check the wiring from the harness with the key on and the car at a temp the fan should come on (but car not running) there is no voltage on the fan control wires.
Anything I missed or any idea what might be the problem? I don't know how to check the relay other than switching it with the other relay of the same kind for fan 2.
I know this sounds kinda "ghetto" but On my car I wired the fan to a relay and to the ignition so when I turn the key forward the fan turns on and stays on constantly. I hate those factory systems for this exact reason right here.
Thread Starter
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From: Greenville, Raleigh NC
Thats how mine is ran right now just so I could take it to the track last night, but I would like for it to work properly, and god knows I don't any more wires and relays under my hood
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Thread Starter
TECH Enthusiast
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From: Greenville, Raleigh NC
Already tried that, it didn't work either. Even tried both fan connectors on the wiring harness and neither of them get voltage when the car is above 180
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Try the fan on just one relay, either the #1 or the #2 relay. I think PCM fan wires for fan1 and fan2 are ground wires, so connect one of those PCM fan wires to the ground side of the relay, and wire the rest of the relay up to switch power and fan power.
That's how I wired mine up. I'm just using two relays for each fan. Works great so far.
That's how I wired mine up. I'm just using two relays for each fan. Works great so far.
Check the wire from the pcm to the relay. It may be bad. If you do a search for my name, you'll find my thread. I was having an issue with the number one fan not coming on at all. Turns out the wire itself was bad.
EDIT: Heres the link to my thread: https://ls1tech.com/forums/general-m...wont-turn.html
EDIT: Heres the link to my thread: https://ls1tech.com/forums/general-m...wont-turn.html
Last edited by NVR_SPDS; Aug 16, 2010 at 09:59 PM.
