Is my Upper Tensioner Pulley Shot? New pic - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-28-2006, 08:37 PM   #11
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I finally was able to get a close up pic of my tensioner pully and the tensioner gauge (If thats what its called)

About a month or so ago, I got a JY pulley that ended up failing and binding up, thank god I heard it before it busted entirely and left me stranded. I put the old one back on there for now and purchased an Autozone replacement (Cheap and Cheap looking) which I am keeping as a spare in case I have another Pulley go. Now im thinking that I may need to replace the entire tensioner.

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Old 11-28-2006, 09:10 PM   #12
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You should be closer to the end I'm on.
Mine is closer to ideal tension with the 2.2" supercharger pulley than with the 2.0" pictured. My advice to you is to replace that tensioner.

If you've changed SC pulleys, you should also change the pulley on the tensioner to a 3.5".
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Old 11-28-2006, 09:22 PM   #13
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Quote:
Originally Posted by BLACK94SSEi
I finally was able to get a close up pic of my tensioner pully and the tensioner gauge (If thats what its called)

About a month or so ago, I got a JY pulley that ended up failing and binding up, thank god I heard it before it busted entirely and left me stranded. I put the old one back on there for now and purchased an Autozone replacement (Cheap and Cheap looking) which I am keeping as a spare in case I have another Pulley go. Now im thinking that I may need to replace the entire tensioner.

I had the same thing going ono. Go out and get 1/2 an inch shorter belt.

You must be running a performance pulley
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Old 11-28-2006, 09:25 PM   #14
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Quote:
Originally Posted by Willwren
If you've changed SC pulleys, you should also change the pulley on the tensioner to a 3.5".
I wish I was that advanced with Modding but its all stock at the moment. Thanks for clearing that up for me Bill. I never even knew there was a gauge there to show the tensioner wear.

I am planning to take care of this tensioner issue as well as the Power Steering pump in a week or so. Until then I hope nothing goes on me.
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Old 11-28-2006, 09:52 PM   #15
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Changing a belt for a weak tensioner isn't good practice.
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Old 11-28-2006, 10:54 PM   #16
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When I replaced tensioners (3 out of 5 total on all my cars) they had gone bad because they were sticking (as opposed to weak springs). When you would rotate tensioner a little to try to loosen or tighten belt, they would have a slight raspy feel and would not spring back close to the position before rotating. Symptoms I had were that bearings kept wearing out for idler pulley, tensioner pulley, and alternator.
The best $ I found for S1 tensioners was at Partsamerica.com
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Old 11-28-2006, 10:55 PM   #17
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Default Re: Is my Upper Tensioner Pulley Shot? New pic

[quote="BLACK94SSEi"]Would anyone know why this would happen? Looking at the Power Steering Pump, the pulley seems to be a little wobbly , but when the belt was off, there was very little play.
quote]

The way to test the tensioner pulley is to loosen the belt off of it. Then rotate, twist, and test it to see if it'* loose or making noise when it rotates. Mine was looking great when running but I had a rushing sound coming from it at times, usually cold.

New one was a cinch to replace-bolt turns backwards from normal. It was around $10 at Advance Auto.
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Old 11-28-2006, 11:23 PM   #18
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Default Re: Is my Upper Tensioner Pulley Shot? New pic

Quote:
Originally Posted by imidazol
The way to test the tensioner pulley is to loosen the belt off of it. Then rotate, twist, and test it to see if it'* loose or making noise when it rotates. Mine was looking great when running but I had a rushing sound coming from it at times, usually cold.

New one was a cinch to replace-bolt turns backwards from normal. It was around $10 at Advance Auto.
Ive tested the pulley that way when I took the JY one and all seemed fine, but as Boost has told me before, when pulling certain parts from the JY all of the parts are exposed to weather, and you end up with a bad part.

Now im thinking more along the lines that when it comes to these parts, I would rather go Genuine GM than Aftermarket. The tensioner pulley I got at AutoZone, and the power steering pump I looked at was cheaply Made/rebuilt. The PSP paint was chipping off and getting all over my hands.
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