Harmonic balancer - 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 07-25-2004, 03:04 PM   #11
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A $10 mechanic'* stethescope is always a good investment. Mine rides in the trunk. You can even give your mechanic a starting point that way.

The tensioner for the other belt is the bottom one. 2 down from the SC tensioner.
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Old 07-26-2004, 02:30 PM   #12
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Quote:
Originally Posted by a2ssei
All the belts are tight. All of them are just a year old.

The car drives smoothly. No knocking sounds coming from the engine. When I drove it this morning around the block a couple of times, the sound of the engine seems to mask the rattling sound. Once under way, the noise dimmishes, but at lower speeds, you can still hear it inside the car faintly...
Actually I didn't mean belt deflection.. I want to know if you can move the belts and pulleys back and forth in their normal path.
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Old 07-27-2004, 01:39 AM   #13
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Thanks for all the good information.

It was the harmonic balancer. My garage ordered the part yesterday and will install it today. Not cheap, but otherwise my SSEI runs great for a car with close to 127,000 miles. I can still get 20 mpg if I stay below 80!
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Old 07-27-2004, 02:23 PM   #14
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If it was, then you were probably able to slide the belts back and forth.
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Old 07-31-2004, 03:12 PM   #15
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Default harmonic balancer

If it truly is a harmonic balancer replace it quickly. Mine died at 90k miles. I don't know exactly when it went bad, but it was on my way home from work which is 57 miles. I drove it less than 15 miles after I heard it rapping and it roached the engine. Cost me almost three grand for a new engine.
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