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Crappy idle with a/c on or heater windshield defrost on

1034 Views 5 Replies 3 Participants Last post by  ThaSilvaL
I get a massive vaccum leak when i turn my a/c on or when the heater is set to defrost the front windshield. My blower only works on full blast, but I have a new blower motor here. I hear a vaccum leak come from the passanger glove box. Im not exactly sure what it is, Im going to take the whole crash pad out and replace the blower motor and take the evaporator apart and check if leaves or somethin got inside. Anyone else have this problem or know a solution?
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umm.. are the heater controls vacum activated? Dads blazer is that way.. or is it buy wires? I dont know what to tell ya..
If the blower only works on full blast, it's not the motor. It's the blower resistor, I had to change that on my gf's Grand Am. I don't know anything else about it, though.
dont think it uses any vacuum tubes. Yea the resister definatley got fried before because i smelt it, but the resistor is inside the blower so i just bought the motor.
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