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Re: Blower Motor Drags Voltmeter Down 300 1986

posted by  someone claiming to be Jim holst on  Sat Sep 15 15:07 CST 2001 [RELATED]

It could be that the increased current used by the motor at high speed is flowing through a poor connection somewhere and this causes voltage losses at those connections. Other possibilities are a weak battery and/or low alternator output. Also, if the blower motor has dragging bearings and the motor is running slower than normal, the motor will draw greater current due to something called a low reverse emf. This is why a stalled electric motor blows fuses. I would check the blower motor circuit and clean all contacts. Be sure the battery cables are clean and tight. Check the alternator output as well. Only if all the rest checks out and if the motor is running slow, would I worry about the blower motor.





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