whitefeathersnpr
New member
- Sep 1, 2008
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My Grand Prix recently started a whining noise (almost like a very loud road noise sound). The noise comes from engine compartment. Only seems to happen when the A/C is turned on and is most noticeable below ~2300 RPM. The only service I have had done on the A/C is the R-134a levels were topped off... probably about the time this noise started. Any ideas on what the cause it?