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.

belt squeal at half throttle

Old Sep 19, 2005 | 06:43 PM
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Default belt squeal at half throttle

My belts are 7 months old not worn out, I put belt dressing.

It only squels at half throttle, Not partial throttle, not WOT but half.

It wont squel in N or P if I rev the engine.

What can be the problem.
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Old Sep 19, 2005 | 11:09 PM
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Do you have the AC on when it squeals?
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Old Sep 20, 2005 | 12:14 AM
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AC on or AC off it squeals
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Old Sep 20, 2005 | 03:01 AM
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Belts squeal when they slip. Belts slip when they are loose. One cause is a weak tensioner spring. Also could be one of the pulleys is binding due to a bad bearing or mechanical problem in the driven unit. If you see rubber dust around a pulley, that indicates slipping, try that one first to see if it is more difficult to turn than it should be.
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