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air conditioner 2003 neon
Posted: Fri Jun 03, 2011 10:59 pm
by jigolf
car runs rough when ac is on . any suggestions on what might be wrong.
Posted: Sat Jun 04, 2011 1:52 am
by hybrid-Srt2001
what is the idle speed at with the a/c on?
most neons idle pretty low with the a/c on causing harsh vibrations...
Posted: Sat Jun 04, 2011 7:32 am
by occasional demons
viewtopic.php?t=57439
This is relatively common. One thing you can check is how well the IAC motor is working. Pull the cover off the air filter box, and remove the air filter. Start the car, and turn on the A/C. When it runs the compressor, you should hear the air being sucked through the IAC inlet hole. It will get louder with the compressor running, and then quieter with the compressor off. If it isn't then the IAC may not be functioning correctly.
If you have a helper, have them turn the wheels also, as the IAC should open a bit to compensate for the load. It may also need cleaned if there is enough carbon buildup in there to restrict air flow.