It blows good on high, but does not put out any air
on the others.
Aug 4, 2016 at 11:44 AM
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CARADIODOC
✓Experienced Mechanic
34,407 POSTS
That is typical of a defective blower resistor. It is bypassed on the highest fan speed. They have a thermal fuse built in, and those burn open from excessive current which is caused by a tight fan motor. The proper repair is to replace the resistor and the motor.