Found my noise, it was the idler pulley - 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 11-17-2005, 08:54 PM   #11
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is a 98 series 2 and it is a left thread, clockwise to loosen
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Old 11-17-2005, 09:00 PM   #12
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Yes a 98 is a * II.

Anthing 96 + is.
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Old 11-17-2005, 09:02 PM   #13
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I know that I ment to sya MINE is a 98 series 2,
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Old 11-17-2005, 09:46 PM   #14
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Can you give us a link to the original thread?
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Old 11-18-2005, 11:07 AM   #15
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thanks for the info. Going to try and rip mine apart today. I'll check out that plastic pulley.
Its cold out here in CT. 24 deg. last night.
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Old 11-18-2005, 11:11 AM   #16
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In working on my S2 SC I found tensioner pulleys to be reverse thread. All fixed pulleys were regular thread.
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Old 11-18-2005, 02:55 PM   #17
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did my 90 today. packed it with grease. Going to do the 96 next chance I get.
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Old 11-18-2005, 03:16 PM   #18
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Good to know that the idler pulley can be repacked. I didn't know and just bought a new one from a dealership for $35. Should have checked here first and saved a bit by going to a GOOD parts store. I called one place and they said I had to get it at the dealership, D'OH!

The first dealer I went to insisted that I had to buy the whole idler tensioner assembly for $140 and that the pulley wasn't removeable. Fortunately I had just been looking at the car and knew otherwise.

Anyway, I have a good metal one on now, so all'* well...and quiet...
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Old 11-18-2005, 03:18 PM   #19
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I as well changed mine out. They were plastic and wearing at the structure anyhow.
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Old 11-18-2005, 07:44 PM   #20
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Don't ya think plastic should be banned from mechanical designs.
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