Radiator cooling fan works non-stop? anyone had this?
Kool_ thanks for the diagram. ... Since I know where the sensor is now, I guess I can test it and see if it works properly, but Im not sure if you can though.
Well mine appears that it does lol... When I turn the ignition to ON without the engine running, my driver side turns on right away, and never stops untill I turn everything back OFF again. That's the problem.
ok yeah I came out today and turned the car, turned the ac on to check if the passenger side turns on, and it did. Seems like yesterday I switched the a/c to check if fan works, and the fan didn't go off, hmmm maybe I didn't notice it. The problem seems like not within the fan but somewhere else I guess (sensors perhaps or fan relay problem). The fan does it's job when needed it's just the driver side won't ever go off when the ignition in ON or when engine is running.
Both fans don't always turn on and off at the same time. Typically one fan runs often (in this case, the driver side) and the other turns on only when the ecu says "ok thats hot enough." or the a/c needs to be more efficient so it needs to cool the condenser more. The driver side isn't turning off because it senses the right side isnt working, its probably just turning off under normal operation. Its starting to sound like its working as it should? Am I misunderstanding something?
Last edited by Shurik355; Oct 29, 2010 at 10:02 AM.
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From: NJ
check fan relay and take it out and reseat the relay. Sometime over current makes relay stuck in circuit. Take it out and reseat and if you have circuit tester check the control circuit of relay. If it has circuit voltage around 12v, you have another problem but if it doesn't have 12v, the relay is stuck in circuit. You gotta change it. it's less than $20.
check fan relay and take it out and reseat the relay. Sometime over current makes relay stuck in circuit. Take it out and reseat and if you have circuit tester check the control circuit of relay. If it has circuit voltage around 12v, you have another problem but if it doesn't have 12v, the relay is stuck in circuit. You gotta change it. it's less than $20.
... And if it doesn't have 12v then the relay is stuck in circuit and need to be changed?
Did I get that right???
BTW I did took that relay out once and reseat it, nothing helped though. Didn't check the voltages on it though.
Last edited by Shurik355; Nov 1, 2010 at 07:49 PM.
The problem fixed...
Ok guys just an update on this issue. The problem was fixed a while back now but no reply to what the fix was. Sorry about that.
It was a bad control module on the fan assembly. Had to get a new one.
It was a bad control module on the fan assembly. Had to get a new one.
^ glad to hear you got it taken care off, as soon as i read you response i thought of that as being the possible problem as well, but a little too late i guess... my friend had a mitsubishi with the same problem and it took quite a few trial and errors and $$ before he figured out it was the fan control module itself, he ended up changing the sensors, relays and such for no good reason.
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From: Fresno
I have the same issue on my coupe 04. So the control module on the fan assembly? not these three radiator relays? How much for the new control module, i heard it around $600. I still have the radiator fan problem so I was going to change the these relays....mmmmm
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