AC compressor whine - Pontiac Solstice Forum
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post #1 of 6 (permalink) Old 07-22-2017, 11:20 AM Thread Starter
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AC compressor whine

I recently replaced my A/C compressor and refilled the system. I haven't had A/C for about a year (it wasn't the highest priority).

Now, with the A/C on, I have an obnoxious whining sound when accelerating. It's like a turbo sound, but about half an octave lower. Observations:

1. Sound is directly linked to RPM
2. Only happens with A/C on
3. Doesn't start until about a minute after the A/C is turned on
4. Engine idles rougher with the A/C on.

It's been suggested that there may be too much refrigerant in the system, making the compressor work harder.

Suggestions? And please don't say "take it to the shop." That never ends well.

Blue-ish 2006 2.4, Werks stage 1 turbo, Borla cat-back, DDM braces, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, some gauges, RKSport hood, Morimoto FX-Rs, GReddy Profec, Norm's fenders

'07 GXP, RPM Stage 2, Solocatless downpipe, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted/drilled rotors, BC Racing BR coilovers, Performance Autowerks intercooler, DDMWorks CAI, charge pipes and braces
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post #2 of 6 (permalink) Old 07-22-2017, 12:27 PM
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hmmm...

I've had that a/c whine on one of my cars since day one...


...but you said you just replaced your parts...


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Mean 2007 NA 2007 Solstice ordered on 8/24/06 - Picked up on 12/12/06 - Totaled on 6/12/10
Mean 2008 GXP Acquired 6/21/10 with 1275 miles on it - Summer Solstice !
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post #3 of 6 (permalink) Old 07-22-2017, 03:06 PM
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Just got mrs stuck's out of the shop for that. Turns out it was the idler pulley making all the noise.
Sting Ya likes this.

It's sticky!!!
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post #4 of 6 (permalink) Old 07-22-2017, 03:08 PM Thread Starter
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Hmmm. I'll check that out. Thanks.


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Blue-ish 2006 2.4, Werks stage 1 turbo, Borla cat-back, DDM braces, Spec aluminum flywheel, Spec stage 2 clutch, Werks aluminum radiator, some gauges, RKSport hood, Morimoto FX-Rs, GReddy Profec, Norm's fenders

'07 GXP, RPM Stage 2, Solocatless downpipe, TCE Wilwood 6 piston front brakes, 4-piston rears , Stainless brake lines, slotted/drilled rotors, BC Racing BR coilovers, Performance Autowerks intercooler, DDMWorks CAI, charge pipes and braces
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post #5 of 6 (permalink) Old 07-23-2017, 04:47 AM
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Quote:
Originally Posted by stuck View Post
Just got mrs stuck's out of the shop for that. Turns out it was the idler pulley making all the noise.
can you post part numbers that you had replaced please ?

Sir William's Fleet
Mean 2007 NA 2007 Solstice ordered on 8/24/06 - Picked up on 12/12/06 - Totaled on 6/12/10
Mean 2008 GXP Acquired 6/21/10 with 1275 miles on it - Summer Solstice !
Deep 2009 NA Coupe Acquired 11/2/13 with 1040 miles on it
Mean 2009 GXP Coupe Acquired 8/27/16 with 9100 miles on it
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post #6 of 6 (permalink) Old 07-23-2017, 06:50 PM
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Sorry, dunno the part number. The fine folks at Anderson's Automotive took care of it and I wrote them a check.

It's sticky!!!
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