a/c noise???? help!
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Joined: Sep 2004
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From: Round Rock Texas
a/c noise???? help!
okay, before i go spend 80 bucks to get it diagnosed + the cost to repair, I was wondering if anyone has experienced, or knows, what is wrong with my a/c. It blows cold air and operates fine. The problem is under the hood. When I turn the a/c or even just the fan on I get this loud howling chirping type noise from the hood. It isnt a cycle type noise that comes in small repeating chirps but rather an on going howling noise. I assume a bearing is bad or something but dont know where or what for sure is the problem. Any thoughts would be helpful.
Team Owner
Joined: Mar 2001
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From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by rowdyt
okay, before i go spend 80 bucks to get it diagnosed + the cost to repair, I was wondering if anyone has experienced, or knows, what is wrong with my a/c. It blows cold air and operates fine. The problem is under the hood. When I turn the a/c or even just the fan on I get this loud howling chirping type noise from the hood. It isnt a cycle type noise that comes in small repeating chirps but rather an on going howling noise. I assume a bearing is bad or something but dont know where or what for sure is the problem. Any thoughts would be helpful.
you have the AC belt system... ( ac compressor, idler pulley, tensioner pulley)
remove one belt, and see if the nosie is still there..
if the noise is still there remove the other belt and see if it goes Away.
removing one belt at a time will point to the belt system with the problem..in both system the tensioner and the idler do go bad... the drive belt system is more common to fail because its a longer belt and there are mor ecomponents..
Thread Starter
Instructor
Joined: Sep 2004
Posts: 112
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From: Round Rock Texas
thank you for the reply. I have replaced the idler pulley on the a/c belt as well as replaced the a/c belt and the alternator belt. However the problem is still there. I have narrowed it down to the fact that it only is a problem when the a/c fan is turned on. I dont know much about the a/c assembly but I think that is where the problem is. If you or anyone else has an idea of what it could be please help me out.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by rowdyt
thank you for the reply. I have replaced the idler pulley on the a/c belt as well as replaced the a/c belt and the alternator belt. However the problem is still there. I have narrowed it down to the fact that it only is a problem when the a/c fan is turned on. I dont know much about the a/c assembly but I think that is where the problem is. If you or anyone else has an idea of what it could be please help me out.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by MalaysianMenace
same problem happened with my 99 coupe. Paid 200+ for repairs to the tensioner. Noise is greatly reduced - but there's still some vibrations when the AC is on and the car is put in reverse.
