With summer here, my car's fan is down to one speed, high and noisy, I have to turn up the radio to hear it.
I opened the dash (as best as possible), checked the 4 position selector switch, completely. Clean, lubed and in working order. Then I pulled the heater/AC blower motor out, removed some dry leaves and found at that 2-wire harness, with the car engine running, I was getting:
1.8 volts on low, 2.5 volts on the next speed, 11 volts on the next, and 14 volts at high. The blower motor looked good.Now there's got to be a hidden resistor card somewhere and I suspect that it's the culprit.
Any ideas on where to look, or do I just keep excavating?
Before the fan speeds stopped working, I found that they were not set well for user comfort. I really want one in the middle, a bit of air but not so much noise. Maybe I can splice in different resistor, if that's what it takes.
Any suggestions on the repair?
TIA,
Dave, "AC questions gladly replied to."