A few months ago the AC/Heater blower wouldn't work at times and then would work fine. Sometimes it would work when I started the car, other times it wouldn't, I thought I noticed a correlation between hitting bumps and pot holes and it coming on or turning off (though even a speed bump at slow speeds may or may not have triggered it) but now it mostly stays off and comes on randomly. I'm thinking a fuse of maybe the Heater Blower Motor Resistor, thoughts or suggestions?
Due to the age of your vehicle, the brushes in the fan motor are worn out. you will have to replace the fan motor, it is not serviceable.
SOURCE: Motor blower doesn't work all the time. If I hit a
same thing happend to me i replaced the blower motor and still the same thing so i replaced the blower motor resistor and it is working fine now. hope this helps
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