Question about 2003 Chevrolet Cavalier

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The blower motor in our 2003 Chev Cavalier is working only when it wants to. What can be wrong?

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Sometimes one or other of the carbon brushes gets stuck so that contact with the motor armature is episodic. You may experience that the motor comes on when you turn in one direction and off again when you turn in the opposite direction. This is due to a small amount of play in the motor bearings and the transfer of weight as the car makes the turn allows the motor core to make or brake contact. Simply remove the motor and free up the carbon brushes. If the brushes are particularly worn down just replace them and then refit the motor which should then last the life of the car.

Posted on Aug 20, 2010


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