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Radiator fans

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Old 05-10-2012 | 01:54 PM
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nuke0907's Avatar
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Radiator fans

When do the radiator fans turn on? Does one run continuous and the other off a thermostatic switch? Do they both run off a thermostat?

Reason i'm asking is because the last time i started my car, i noticed that neither fan was running after i started it. i wasn't able to let it run to let it warm up for me to check the fans due to other problems. I have a set of aftermarket fans wired in.
Old 05-10-2012 | 02:11 PM
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They are controlled by the ECU, you might want to the relay though. Do you still have a Cobb tune installed? they won't be running unless it's up to temp. Did you try the AC?
Old 05-10-2012 | 02:24 PM
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Originally Posted by nuke0907
when do the radiator fans turn on?
Radiator fans-cooling-fan-control-system.jpg
Old 05-10-2012 | 02:25 PM
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Awesome, I need to get a real workshop manual.
Old 05-10-2012 | 02:30 PM
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The car didn't warm up long enough and my AC system is depressurized. That answers my question though. they probably work i just didn't see them run and just a little worried.
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