Impala - Chevrolet :: 2006 - Belt Squeal When Temperature Is Hot Outside


Mar 10, 2013

3.9L V6 Chevrolet Impala driver here. The vehicle has about 83000 miles on it. I've been driving it since 2006 and was purchased used. The belt is starting squeal. Which isn't that big of a deal since all belts do need to be replaced. However, the squeal only occurs when the temperature is hot outside or has been driven for a while. If I go on a long drive the belt won't squeal until I get to more stop and go traffic. I have sprayed pulley's while the belt is squealing and it is the power steering pulley. However, I am not sure if to replace the power steering pump or just replace the pulley. Sounds like a bad bearing in my opinion.

I replaced my belt with the recommended Gates belt. Upon inspection of the pulleys I had one that looked questionable. Here is an image of the pulley that was pulled imgur.com/a/vU8DG#0. This is the lower Idler pulley. [URL] ....

I just noticed today of 4/1/2013 that there is a slight squeal coming from the engine bay. I notice it more when accelerating then if I am just idling. This sounds like it may be the lower idler pulley.

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I was thinking that my belt somehow stopped getting a charge to my alternator or something to that effect. Not sure though. Both the belt and alternator were replaced last year.

He also said it clicks when he turns the key.

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I drive a 1991 Honda Accord. A few months ago I began to notice that the engine compartment would squeal when I started it on occasion. I went under the hood and determined that both the alternator and steering pump belts could do to be tightened and did just that. That solved the problem.

A few weeks later they begin to squeal again. I apply some belt conditioner and it usually goes away for that particular trip, but the squeal will come back upon the next time I start the car.

I can't tell which belt the squeal is coming from, as they are practically right on top of one another.

Over the past month or so, the squeal has gotten progressively worse. It will squeal at startup until I begin to reach approx 2k RPMs. If I go to idle during driving, it will (maybe 40% of the time) drop down to below 500 RPMs and squeal, and on even fewer occasions the car will sputter and stall out (MAYBE once per day).

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