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Old 08-24-2019, 09:02 PM   #10 (permalink)
fryzia23
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Join Date: Dec 2010
Location: new jersey
Posts: 339
Drives: 2011 MB 370Z NISMO
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Our cars fan isn't switch controlled. The control module gets signal directly from ECU to turn on/off the fan based off of coolant temperature sensor. So if your temp on dash is correct then the ECU gets proper coolant temp. Faulty ambient temperature sensor would cause issues with heat or ac not functioning correctly. Nothing to do with radiator fan.
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