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Squeaky idler pullys

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Old 29 Dec 2015, 03:52 pm
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Default Squeaky idler pullys

I have installed 2 new ac idler pullys and one new complete idler assy. All of them squeal until i hit the center of them with wd 40, then they quiet down for maybe 15 seconds and then go right back to squealing. Do all idler pullys have junk bearings or what...driving me crazy.
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Old 29 Dec 2015, 04:06 pm
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Location: darien il
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Default Re: Squeaky idler pullys

if you replaced the tensioner pulley and the new one squeaks, most likely cause is a worn out tensioner that isn't tracking straight. improper alignment will cause squeaking and premature bearing chirping. last tensioner i replaced the bearing in it only lasted about a week before it started making noise. the issue was the belt tensioner pivot point was worn and was making the pulley sit crooked.

it is also possible you're buying junk, but it's very unlikely.

are you sure if you hit the belt with water or wd, that doesn't also stop it?
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Old 29 Dec 2015, 07:20 pm
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Default Re: Squeaky idler pullys

On my 2001 PT, I had the chirping noise even after replacing the tensioner. I found two things. First, the power steering pulley on some early PT's needs to be pull out a little on the pump shaft to align. It was done on some of them at the factory according to reports. And second, my crankshaft pulley had not been set all the way onto the crankshaft after the previous owner had the timing belt replaced.

I found the crank pulley issue by removing the crank bolt and noticing that the end of the crank was not up all the way on the inner shoulder of the crank pulley. And after reading online about the power steering pump pulley, I found mine had been pulled out on the shaft too far, likely during the same timing belt job. I snugged up the crank pulley and then pulled the right headlight where I could get a better visual on the PS pulley. I then sucked it in so the belt visually aligned. This solved my problem

If the timing belt and/or power steering pump has been changed on your PT, these items are worth looking at.
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Old 30 Dec 2015, 11:32 pm
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Default Re: Squeaky idler pullys

Thanks guys, I replaced the belt today and it went away. Guess I was getting some wd on the belt even though I thought I was only hitting the center of the pully. The old belt looked perfect, but, oh well Finally quiet.
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