2004 Civic DX... Persistent A/C - alternator belt squeal

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Aug 29, 2018

simplified

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2004 Civic DX... Persistent A/C - alternator belt squeal

I did a routine timing belt / water pump replacement a couple of weeks ago, along with belts & hoses. Everything went like clockwork but now I have a persistent squealing problem with alternator - a/c belt. I have replaced the belt twice since the job, playing with different tensions each time. The compressor clutch and alternator spin nicely with the belt off. There are no oil leaks. A/C pressures are within specs and it blows cold. With the lower dust cover off I can see the compressor stall (and the belt squeals) when I have someone rev the engine. I tried Gates, Continental and Partsmaster belts. I have an OEM Honda belt ordered but have little faith that it will do the trick. The car has 91,000 miles on it and is stock / unmolested. I would appreciate any help or ideas... Thanks so much in advance!

Last edited by simplified; Aug 29, 2018 at 08:07 AM. Reason: Forgot to mention that the car is stock / unmolested.

Aug 29, 2018

ezone

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Re: 2004 Civic DX... Persistent A/C - alternator belt squeal

Make sure belt is a good brand.

Does it squeal upon cold startup?
AC turned OFF, belt still squeals?
Don't play with different tensions. Tighten that belt until it doesn't squeal.