A/C belt flaps at 1800+ RPM (Help please).

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t_dog_lxi
Club Member
Posts: 9
Joined: Thu Oct 29, 2009 1:21 pm
Location: Oshawa Ontario

A/C belt flaps at 1800+ RPM (Help please).

Post by t_dog_lxi »

Well last year I started hearing a smacking noise when I turned my A/C on. Thought a belt was snapped and flapping against something as it was rotating (1800-200 rpm) . Turns out it was the A/C belt. Got it replaced but it was late in the year so I didn't use it anymore.



This year It happened again. Got it replaced yet again ( I think he said it was a DECO model or something like that. Not AC delco though. Day later I noticed a squeeling sound around 1800 RPM when I was leaving from a dead stop. Took it back in, and lifted the hood, reeeevvvved it up a bit, and he (mechanic) noticed that the belt was flapping up and down (still in 1 piece though). So he ordered an AC Delco belt and tensioner, and it had the same issue, ordered an GM belt and tensioner, and still I am having the same issue.



Can anyone help me out that has had this issue and fixed it, or who knows what it may be.



Thanks,

Terry
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whitehumh2
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Joined: Tue Jul 04, 2006 11:47 pm
Location: Lachine, Quebec

Re: A/C belt flaps at 1800+ RPM (Help please).

Post by whitehumh2 »

[quote name='t_dog_lxi' timestamp='1344013788' post='39320']

Well last year I started hearing a smacking noise when I turned my A/C on. Thought a belt was snapped and flapping against something as it was rotating (1800-200 rpm) . Turns out it was the A/C belt. Got it replaced but it was late in the year so I didn't use it anymore.



This year It happened again. Got it replaced yet again ( I think he said it was a DECO model or something like that. Not AC delco though. Day later I noticed a squeeling sound around 1800 RPM when I was leaving from a dead stop. Took it back in, and lifted the hood, reeeevvvved it up a bit, and he (mechanic) noticed that the belt was flapping up and down (still in 1 piece though). So he ordered an AC Delco belt and tensioner, and it had the same issue, ordered an GM belt and tensioner, and still I am having the same issue.



Can anyone help me out that has had this issue and fixed it, or who knows what it may be.



Thanks,

Terry

[/quote]





If you have already replaced the belt and the tensioner, you need to have your compressor verified. If the load from the compressor is too great, the poor belt and tensioner will never be able to compensate for it. And a compressor the is starting to seize will definitely cause the belt to squeal and flap!
<p class="bbc_center">1 - There is a time for everything,

and a season for every activity under the heavens:

3b - a time to tear down and a time to build,

5 - a time to scatter stones and a time to gather them,

Ecclesiastes 3:1,3b&5a
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t_dog_lxi
Club Member
Posts: 9
Joined: Thu Oct 29, 2009 1:21 pm
Location: Oshawa Ontario

Re: A/C belt flaps at 1800+ RPM (Help please).

Post by t_dog_lxi »

[quote name='Polar Bear' timestamp='1344018547' post='39323']

If you have already replaced the belt and the tensioner, you need to have your compressor verified. If the load from the compressor is too great, the poor belt and tensioner will never be able to compensate for it. And a compressor the is starting to seize will definitely cause the belt to squeal and flap!

[/quote]



Thanks Polar Bear. I'll mention that to my mechanic.
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