C5 Squeal under the hood
Thread Starter
Racer
Joined: Dec 2000
Posts: 437
Likes: 182
From: Renton WA
C5 Squeal under the hood
My fellow Americans!
So, 2000 Corvette, 127,000 well maintained miles. Drove to work Friday of last week with nary a sound and Saturday morning fired up to a squeal under the hood.
The belt is not new but not old either. The tensioner and belt were replaced around 20,000 miles ago.
I sprayed some belt dressing on it and it really didn't change the noise much. At idle it is quite and below 1500 RPM it seems to be quieter but at acceleration or hard acceleration it just squeals.
My thinking is maybe this is the AC compressor? Is this something someone has experienced?
I'm just trying to get ahead of when I can get under there for serious work in a couple weeks. I was going to buy AC charge, a new belt... remove the belt and spin all the accessories to see if any of them are rough.
Am I on the right path?
Thanks and Keep Rock Alive!
So, 2000 Corvette, 127,000 well maintained miles. Drove to work Friday of last week with nary a sound and Saturday morning fired up to a squeal under the hood.
The belt is not new but not old either. The tensioner and belt were replaced around 20,000 miles ago.
I sprayed some belt dressing on it and it really didn't change the noise much. At idle it is quite and below 1500 RPM it seems to be quieter but at acceleration or hard acceleration it just squeals.
My thinking is maybe this is the AC compressor? Is this something someone has experienced?
I'm just trying to get ahead of when I can get under there for serious work in a couple weeks. I was going to buy AC charge, a new belt... remove the belt and spin all the accessories to see if any of them are rough.
Am I on the right path?
Thanks and Keep Rock Alive!
Thread Starter
Racer
Joined: Dec 2000
Posts: 437
Likes: 182
From: Renton WA
Unfortunately, it was top off weather! Thus why I was out and about!
I did stop I a school parking lot to give another look under the hood and helped a kid who just bought his first stick shift though. He liked the Corvette.
I did stop I a school parking lot to give another look under the hood and helped a kid who just bought his first stick shift though. He liked the Corvette.
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Any chance it is coming from your water pump?
And moving this to C5 Tech.
And moving this to C5 Tech.
Melting Slicks
Joined: Sep 2021
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Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
My fellow Americans!
So, 2000 Corvette, 127,000 well maintained miles. Drove to work Friday of last week with nary a sound and Saturday morning fired up to a squeal under the hood.
The belt is not new but not old either. The tensioner and belt were replaced around 20,000 miles ago.
I sprayed some belt dressing on it and it really didn't change the noise much. At idle it is quite and below 1500 RPM it seems to be quieter but at acceleration or hard acceleration it just squeals.
My thinking is maybe this is the AC compressor? Is this something someone has experienced?
I'm just trying to get ahead of when I can get under there for serious work in a couple weeks. I was going to buy AC charge, a new belt... remove the belt and spin all the accessories to see if any of them are rough.
Am I on the right path?
Thanks and Keep Rock Alive!
So, 2000 Corvette, 127,000 well maintained miles. Drove to work Friday of last week with nary a sound and Saturday morning fired up to a squeal under the hood.
The belt is not new but not old either. The tensioner and belt were replaced around 20,000 miles ago.
I sprayed some belt dressing on it and it really didn't change the noise much. At idle it is quite and below 1500 RPM it seems to be quieter but at acceleration or hard acceleration it just squeals.
My thinking is maybe this is the AC compressor? Is this something someone has experienced?
I'm just trying to get ahead of when I can get under there for serious work in a couple weeks. I was going to buy AC charge, a new belt... remove the belt and spin all the accessories to see if any of them are rough.
Am I on the right path?
Thanks and Keep Rock Alive!
I would start be removing main belt and run the engine to make sure that is the offender....as opposed to the A/C belt. Take note of the balancer condition/security/wobble.
Thread Starter
Racer
Joined: Dec 2000
Posts: 437
Likes: 182
From: Renton WA
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Burning Brakes
Joined: Jul 2004
Posts: 768
Likes: 6
From: Newport Beach, Southern California
In my case the squeek came from the tensioner not being aligned. Belt was chirping rubbing very subtle on pulley.
I 've learned that these noises can be very confusing and had a Corvette mechanic refuse to take the job...
I 've learned that these noises can be very confusing and had a Corvette mechanic refuse to take the job...
Tech Contributor
Joined: Jan 2007
Posts: 19,472
Likes: 1,171
From: Dyer, IN
https://www.corvetteforum.com/forums...northwest-127/
Thread Starter
Racer
Joined: Dec 2000
Posts: 437
Likes: 182
From: Renton WA
Perhaps a forum member in your area can help out..
https://www.corvetteforum.com/forums...northwest-127/
https://www.corvetteforum.com/forums...northwest-127/
Cheers!
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,668
Lucky commented about discerning between the main serpentine belt/pulleys/tensioners and the A/C serpentine drive. It has been my experience that the A/C belt seems to cause more issues than the main belt. But you won't know until you try. I also know that if any antifreeze was spilled on the belts somewhere in the past, the belts will squeal, and there's nothing you can do but clean all the pulleys well and install new belts. Best of luck to you.....