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Radiator fan turns on late

My radiator fan kicks on at 220f, works for less than a minute and off it goes. ive changed the thermostat, the sensor on the thermostat and the sensor on the radiator but still have the issue, any suggestions?

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3 Comments:

When the motor kicks off is voltage still being sent to the motor?

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Im not sure, it turns on for less than a minute and off it goes..

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check with a meter and see. If you are getting voltage then the fan motor is bad. If not, you'll have to trace the circuit back from there to find the issue.

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