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What does it mean when your heater keep going off and on and stops blowing?


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Wiki User
2005-04-12 03:43:31
2005-04-12 03:43:31

Not knowing when the fan motor starts and stops, I would check this-if the blower doesn't run then you hit a bump, pothole, etc. and it runs, its probably the bushings in the motor. The only fix for this is replacing the blower assembly. If the motor isn't manufactured/remanufactured correctly, then the bushings which actually turn the shaft by inducing the electrical field are shot. A simple test is the next time the blower stops, hit the motor with your hand to see if it will start.

Related Questions

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There's a short in your main line going to your fuel heater.

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Heater blower motor is defective and locked up, or possible short in the wiring.

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There is an electrical short to ground in the fan switch or in the blower motor itself.

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You probably have a shorted wire going to the motor or switch. You'll have trace the wires and find the damaged section.

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not usually!!if fuse is blowing out check for short!!


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