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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.

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โˆ™ 2005-04-12 03:43:31
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Q: What does it mean when your heater keep going off and on and stops blowing?
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