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Followup To
Question -
I have a 94' Bonneville, that doesn't blow any air. For the past few years, it would work on the 3 lowest settings, but not on the 4th (both A/C and heat). Then it stopped working all together, except sometimes it would kick-on at highway speeds.
I took it to a shop, and they said it was the blower motor resistor. I bought the part and put it in myself, but it didn't work. Now, a little air(just a little) will come out on regular A/C setting, but if I put it on MAX it won't work at all. Any possible solutions? Thank you,
Eric
Answer -
Hi, go to the switch side of the resistor and see if you have 12 volts on hi, then go down on the switch the voltages should drop as the switch moves down lo, if this is ok, then do the same on the motor side of the resistor. if get the same thing on both, Now if you don't get the 12 volts then this could be the switch. Also check the fuses.
Hi, I'm not quite sure I understand really what you mean. I should go to the switch itself(the knob you turn for the fan settings)? If so, how would I check the voltages? Go behind the unit to where all the knobs are hooked up to the wires? Thanks again,
Eric
AnswerOk do it like this, you will need a voltmeter, check the voltage at the motor, to see if you are getting 12volts at the motor with the blower switch on hi. now if there is 12 volts there, if the motor is not turning at a hight speed then it would be the blower motor is bad.
