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1999 Chevrolet Cavalier Rough idle

Tiny
MLWELCH92
  • MEMBER
  • 1999 CHEVROLET CAVALIER
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 120,000 MILES
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!
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Tuesday, June 17th, 2014 AT 8:06 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,896 POSTS
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.
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Tuesday, June 17th, 2014 AT 8:55 PM
Tiny
MLWELCH92
  • MEMBER
  • 2 POSTS
Thank you. I will take it back and make sure they check these things.
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Tuesday, June 17th, 2014 AT 9:03 PM

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