2000 Chevy Malibu AC switches on and off

2000 CHEVROLET MALIBU
114,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BILLVYHO
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When using AC the, AC will go on and off randomly. The blower will stay on, but the green AC light will go on and off constantly, and besides not having AC, this causes rough idles if it is going on and off at a red light. If I mess with the switch, like turning it between numbers, or switching back and fourth, the AC will come on and off, almost like there is a short or something. The dealer replaced that whole part 2 years ago, and it worked fine for a few months, then went back to the same thing. I have not taken it back. It seems to be worse the more humid it is. Thanks for any suggestions.
Oct 13, 2009 at 7:54 AM
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RHALL77
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sounds like you have a problem with the blower resistor. you can remove it and see if hte part itself is burned. it is located by the passenger floor up towards the HVAC case. let me know what you find out
Oct 13, 2009 at 5:13 PM
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BILLVYHO
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I replaced that a little while ago when the blower completely stopped working. Is it possible I did something to it at that time?
Oct 14, 2009 at 11:47 AM
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RHALL77
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it could be bad again. What part did the dealer replace
Oct 14, 2009 at 5:53 PM
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BILLVYHO
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the dealer replaced the front panel with the switches
Oct 14, 2009 at 10:33 PM
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RHALL77
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check the blower resistor one more time to be sure.
Oct 15, 2009 at 5:51 PM