TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Idle surges when ac is turned on

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Old May 2, 2001 | 09:35 PM
  #1  
AdamS91RS's Avatar
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From: Avon, Ct
Idle surges when ac is turned on

The car runs fine but when the ac is turned on the idle surges about 500 rpms i have no idea what could be causing this. any help would be apreciated.
Adam

91 RS 305 stock
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Old May 2, 2001 | 11:46 PM
  #2  
89RagTopRS's Avatar
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Joined: Dec 2000
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From: Yabba Grabba Brew
Car: 89 Camaro RS Convertible
Engine: 305
Transmission: NWC T-5
Your car needs some extra power to run the compressor so it surges the idle a bit, a 500rpm jump is a bit high compared to mine. Mine surges from the 500rpm idle to 650rpm, not a big jump at all.

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