Chirping coming from A/C compressor?
Thread Starter
Pro
Joined: Aug 2009
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From: Fort Lauderdale Florida
Chirping coming from A/C compressor?
Okay so I've had this chirping nice for a while now and its really bugging me. When the car is runing at 2000 rpms I can hear a very loud chirping noise, when I turn on the A/C it gets even louder, when I turn it back off it goes back to the original sound.
I had my A/C compressor replaced at the dealership back in January and I'm thinking it might be a faulty part.
My question is what part of the compressor would cause the sound to get louder when the A/C is engaged?
I had my A/C compressor replaced at the dealership back in January and I'm thinking it might be a faulty part.
My question is what part of the compressor would cause the sound to get louder when the A/C is engaged?
Team Owner
Joined: Jan 2009
Posts: 73,568
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From: Somewhere in Mo
St. Jude Donor '09-'10, '14
Well I'm dealing with a squealing from one one of belts now and I'm in Detroit on the Hot Rod Power Tour, and it really really sucks.
In your case it could be a bad compressor they replaced, or the tensioner or the idler pulley or even possibly a bad belt. But I would hope they changed the belt when they replaced the compressor. That's pretty standard procedure when they do something like that or it should be anyway.
Take off your belt, for your AC and see if the sound goes away. Or take it back and tell whoever replaced it that it's chirping.
In your case it could be a bad compressor they replaced, or the tensioner or the idler pulley or even possibly a bad belt. But I would hope they changed the belt when they replaced the compressor. That's pretty standard procedure when they do something like that or it should be anyway.
Take off your belt, for your AC and see if the sound goes away. Or take it back and tell whoever replaced it that it's chirping.
Race Director
Joined: Jan 2007
Posts: 18,643
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From: Norman Oklahoma - The Only State in the Union with no Blue Counties!
Well I'm dealing with a squealing from one one of belts now and I'm in Detroit on the Hot Rod Power Tour, and it really really sucks.
In your case it could be a bad compressor they replaced, or the tensioner or the idler pulley or even possibly a bad belt. But I would hope they changed the belt when they replaced the compressor. That's pretty standard procedure when they do something like that or it should be anyway.
Take off your belt, for your AC and see if the sound goes away. Or take it back and tell whoever replaced it that it's chirping.
In your case it could be a bad compressor they replaced, or the tensioner or the idler pulley or even possibly a bad belt. But I would hope they changed the belt when they replaced the compressor. That's pretty standard procedure when they do something like that or it should be anyway.
Take off your belt, for your AC and see if the sound goes away. Or take it back and tell whoever replaced it that it's chirping.
Should not be happening! Could be another pulley though!
Pro
Joined: Aug 2010
Posts: 593
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From: San Antonio Texas
[QUOTE=SFL_driver;1580966518]Okay so I've had this chirping nice for a while now and its really bugging me. When the car is runing at 2000 rpms I can hear a very loud chirping noise, when I turn on the A/C it gets even louder, when I turn it back off it goes back to the original sound.
I had my A/C compressor replaced at the dealership back in January and I'm thinking it might be a faulty part.
My question is what part of the compressor would cause the sound to get louder when the A/C is engaged?[/QUOTE
The "theory of recency" would point you in the direction of the last part replaced, which is the compressor. Of course, it could easily be the tenioner, the belt, or all of the above. The only advantage of having your car worked on at the dealership, IMHO, is that you have a warranty of some sort, implied or actual! USE IT. Good Luck.
I had my A/C compressor replaced at the dealership back in January and I'm thinking it might be a faulty part.
My question is what part of the compressor would cause the sound to get louder when the A/C is engaged?[/QUOTE
The "theory of recency" would point you in the direction of the last part replaced, which is the compressor. Of course, it could easily be the tenioner, the belt, or all of the above. The only advantage of having your car worked on at the dealership, IMHO, is that you have a warranty of some sort, implied or actual! USE IT. Good Luck.
Team Owner
Joined: Jan 2009
Posts: 73,568
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From: Somewhere in Mo
St. Jude Donor '09-'10, '14
Very true. The only reason Is said possibly a bad compressor is I had that happened to me once. Brand new out of the box compressor was bad. It was the last thing replced so I would start there.
However when they took it off they could have messed up the tensioner, ( I doubt it though) But this seems odd. However it could very well be a different part went bad and totally unrelated. I have had that happen to me more than once and of course I swore it was the previous repair when it wasn't. Just a new problem. He needs to take it back and have them check it to make sure.
In my case I had the GM techs look at mine today. (from GM mind you) They said it was either the tensioner or the idler, so it's best to replace both at the same time.
replaced both. Chirp still there. No coolant leak, or loss of fluid at all. But they said it could be the water pump. Took off the drive belt and the problem went away. so it is the drive belt area.
They even put a stethoscope on it and said it wasn't bad enough to locate.
What? I can here the thing inside the car, what do you mean it's not loud enough to tell where it's coming from?
Oh well, they said to check in everyday with them if it gets worse. So now what do I do?
These things aren't worth the hassle imo.
However when they took it off they could have messed up the tensioner, ( I doubt it though) But this seems odd. However it could very well be a different part went bad and totally unrelated. I have had that happen to me more than once and of course I swore it was the previous repair when it wasn't. Just a new problem. He needs to take it back and have them check it to make sure.
In my case I had the GM techs look at mine today. (from GM mind you) They said it was either the tensioner or the idler, so it's best to replace both at the same time.
replaced both. Chirp still there. No coolant leak, or loss of fluid at all. But they said it could be the water pump. Took off the drive belt and the problem went away. so it is the drive belt area.
They even put a stethoscope on it and said it wasn't bad enough to locate.
What? I can here the thing inside the car, what do you mean it's not loud enough to tell where it's coming from?Oh well, they said to check in everyday with them if it gets worse. So now what do I do?
These things aren't worth the hassle imo.
Thread Starter
Pro
Joined: Aug 2009
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From: Fort Lauderdale Florida
So I pulled off the accessory belt and the noise still remained. I pulled off the A/c belt and the noise went away. So tomorrow I'm going to pick up a gatorback belt for the a/c system. Hopefully this fixes the issue. How ever the belt is new as of january, the idler and tensioner pullies are new as of march and the a/c compressor is new as of january so really none of these parts should be making any noise.
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Team Owner
Joined: Jan 2009
Posts: 73,568
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From: Somewhere in Mo
St. Jude Donor '09-'10, '14
It's a crying shame I can diagnose an issue with my limited knowledge and trained professionals get that goober thing going on without a computer to guide them.Good grief, wth? I also think my tensioner may be bad but it's not totally shot, however something is causing an alignment issue and I will find out what it is I know that, I won't rest until I do.
But in your case why in the hell did someone change a compressor on your car and not change the belt? Makes no sense whatsoever. You may also want to recheck your belt pulley's alignment. Something is making it out of whack, or it could just be your belt is shot and they didn't change it. If your compressor was acting up it most likely fried your belt as well.
Just my 2 cents.
Thread Starter
Pro
Joined: Aug 2009
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From: Fort Lauderdale Florida
Okay so the noise came back the day after I put on the new belt. But with a little help from my local corvette shop I think I have figured out the issue... Leaking water pump!
I checked the water pump and I noticed chalky white lines running down the face of the pump, consequently dripping down onto the a/c belt and ruining it.
After I replace the pump and the belt again I should be home free
I checked the water pump and I noticed chalky white lines running down the face of the pump, consequently dripping down onto the a/c belt and ruining it.
After I replace the pump and the belt again I should be home free