Fan speed issue
#11
Problem resolved! Previously, when my battery kept dying, it was traced to the blower motor resistor. I had the blower motor resistor rebuilt. At the same time that I reinstalled the rebuilt blower motor resistor, I installed a new blower motor. Apparently the new blower motor I installed was crap. It says on it "Unimotor - Made in Canada." I think I got it from Amazon or eBay. Lesson learned trying to cheap out on parts! I bought the ACDelco OEM Blower Motor 15-80387 and now it's working perfectly. It does not come with the impeller so I had to take it off my old old original one and give it a thorough cleaning, then install it on the new blower motor, and add a new retaining clip.
#14
It does sound like the HVAC is deliberately shutting off the FAN, however a quick test with a multimeter would tell you:-
explains everything to do with the FAN control.
- if it's HVAC turning off the FAN or
- the Blower Module isn't responding correctly or
- there is still an issue with the motor itself.
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