Air Conditionor noise
Thread Starter
Racer
Joined: Sep 2012
Posts: 322
Likes: 11
From: Staten Island New York
Air Conditionor noise
My A/C compressor on my '77, is making a noise. With just the engine running its fine, no noise at all. But once I turn on the A/C, the compressor is making a squealing sound, like a bearing is bad.... Is the compressor low on oil, is the clutch shot or a bad bearing... Do I need to replace the whole compressor or can it be rebuilt... Like I said, its fine with just with the engine running, but once I turn on the A/C I get the noise..
Last edited by news2me; Aug 25, 2015 at 08:34 AM.
Le Mans Master
Joined: Dec 2006
Posts: 8,837
Likes: 1,028
My A/C compressor is making a noise. With just the engine running its fine, no noise at all. But once I turn on the A/C, the compressor is making a squealing sound, like a bearing is bad.... Is the compressor low on oil, is the clutch shot or a bad bearing... Do I need to replace the whole compressor or can it be rebuilt... Like I said, its fine with just with the engine running, but once I turn on the A/C I get the noise..
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
My A/C compressor on my '77, is making a noise. With just the engine running its fine, no noise at all. But once I turn on the A/C, the compressor is making a squealing sound, like a bearing is bad.... Is the compressor low on oil, is the clutch shot or a bad bearing... Do I need to replace the whole compressor or can it be rebuilt... Like I said, its fine with just with the engine running, but once I turn on the A/C I get the noise..
Are you sure its not a loose belt causing the squealing?
Thread Starter
Racer
Joined: Sep 2012
Posts: 322
Likes: 11
From: Staten Island New York
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
Otherwise you have a problem with the clutch or a bearing in the A/C compressor. do you smell hot brake like smell? That would indicate a slipping clutch.
Thread Starter
Racer
Joined: Sep 2012
Posts: 322
Likes: 11
From: Staten Island New York
No, it might not. belt might be tight enough just to run around the pulley but once you put a load on it, then it may squeak. A belt squeak should be familiar to you if you've ever heard one before.
Otherwise you have a problem with the clutch or a bearing in the A/C compressor. do you smell hot brake like smell? That would indicate a slipping clutch.
Otherwise you have a problem with the clutch or a bearing in the A/C compressor. do you smell hot brake like smell? That would indicate a slipping clutch.
Last edited by news2me; Aug 25, 2015 at 11:40 AM.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 439
From: Wellington, FL
St. Jude Donor '11 thru '25
Try placing an auto stethoscope on and around the compressor to pinpoint the noise with the a/c on. I wouldn't continue to run it until you identify the problem.
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