1999 Chevrolet Cavalier Rough idle

1999 CHEVROLET CAVALIER
120,000 MILES • 2.4L • 4 CYL • FWD • AUTOMATIC
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MLWELCH92
  • MEMBER
  • 2 POSTS
My car runs smooth until you turn the air conditioner on. When you're driving it's okay, but when you slow down for a light or stop sign it acts like it wants to die. I just had freon put in, and they replaced a hose and checked the compressor. It was fine. Could this be the idle air control valve? I really don't want to put a lot more money in it so hopefully it's not too bad. Thanks for your help!
Jun 17, 2014 at 8:06 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Most likely it's the IAC. It should increase RPM's when the AC is turned on. Also, check to make sure there are no vacuum leaks.
Jun 17, 2014 at 8:55 PM
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MLWELCH92
  • MEMBER
  • 2 POSTS
Thank you. I will take it back and make sure they check these things.
Jun 17, 2014 at 9:03 PM
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