Possible bad AC compressor ? Squeak noise only when AC is on - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Maverick1776 · 07-24-2016, 10:04 PM

My car makes a squeaking noise at random times while the car is stopped.
So sometimes it happens at a drive through, red light, stop sign, etc...
You'll never hear it while car is in any motion above 10 MPH.
And what's worse is that its random. It wont happen all the time, just sometimes. Like 75% of the time it will occur.

Recently, I changed the serpentine belt, replaced the tensioner pulley, and lubricated the shaft areas of where the other pulleys are with some WD40 (light amount, applied prior to new belt installation).
After all of that work, the noise still continues. When you try to listen for the noise, it's almost as if its coming from under the engine. Not 100% sure.

This is a 2013 LFX V6. If I was to compare the noise with something, you could say it sounds like whistling/squeaking. The pitch of the noise is variable from semi-loud to loud. You can only hear it if windows are rolled down.

I'm honestly not sure what else to check.
If you guys have any ideas, it would be a great help. It sucks going somewhere and having people see a nice ride, but hearing a super annoying sound.

Maverick1776 · 08-06-2016, 12:41 AM

I had my car taken to the dealer for 2 reasons, one was for an electrical issue which I created a different threat about, the other is for this noise coming from the lower engine area drivers side.

So the dealer kept it for a day, and said it was the motor mounts. Which is covered under warranty, so they replaced them at no charge.

Now I have my car back, and noticed the sound has completely gone away except for when I power on my AC. However, its no where near as bad as it was before.

So could this mean, my AC clutch is going bad, or the compressor ? Is there anything that can be sprayed onto it to help with the noise ?

TooCool5 · 08-06-2016, 09:25 AM

The 10's had an issue with the belt, the service bulletin said to change to a poly belt.

You could spray belt grip on it while the noise is happening to see if the sound changes.

Maverick1776 · 08-15-2016, 07:57 PM

Quote:

Originally Posted by TooCool5

The 10's had an issue with the belt, the service bulletin said to change to a poly belt.

You could spray belt grip on it while the noise is happening to see if the sound changes.

Thanks, but do you think it would do anything even after I replaced the belt ?

07-24-2016, 10:04 PM	#1
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Possible bad AC compressor ? Squeak noise only when AC is on My car makes a squeaking noise at random times while the car is stopped. So sometimes it happens at a drive through, red light, stop sign, etc... You'll never hear it while car is in any motion above 10 MPH. And what's worse is that its random. It wont happen all the time, just sometimes. Like 75% of the time it will occur. Recently, I changed the serpentine belt, replaced the tensioner pulley, and lubricated the shaft areas of where the other pulleys are with some WD40 (light amount, applied prior to new belt installation). After all of that work, the noise still continues. When you try to listen for the noise, it's almost as if its coming from under the engine. Not 100% sure. This is a 2013 LFX V6. If I was to compare the noise with something, you could say it sounds like whistling/squeaking. The pitch of the noise is variable from semi-loud to loud. You can only hear it if windows are rolled down. I'm honestly not sure what else to check. If you guys have any ideas, it would be a great help. It sucks going somewhere and having people see a nice ride, but hearing a super annoying sound. Last edited by Maverick1776; 08-06-2016 at 12:38 AM.

08-06-2016, 09:25 AM	#3
TooCool5 Drives: 2010 Camaro 1LS 3.6 LLT V6 325 HP Join Date: May 2009 Location: LS Posts: 4,242 View My Garage	The 10's had an issue with the belt, the service bulletin said to change to a poly belt. You could spray belt grip on it while the noise is happening to see if the sound changes. __________________ 2010 Camaro Auto, Inferno Orange, Titanium Interior, Gearhead Wheels AIRAID CAI

08-06-2016, 12:41 AM	#2
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	I had my car taken to the dealer for 2 reasons, one was for an electrical issue which I created a different threat about, the other is for this noise coming from the lower engine area drivers side. So the dealer kept it for a day, and said it was the motor mounts. Which is covered under warranty, so they replaced them at no charge. Now I have my car back, and noticed the sound has completely gone away except for when I power on my AC. However, its no where near as bad as it was before. So could this mean, my AC clutch is going bad, or the compressor ? Is there anything that can be sprayed onto it to help with the noise ?