strange problems come and go! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-24-2004, 03:25 AM   #1
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Default strange problems come and go!

Here it goes, my car starts to vibrate again for no reason when going over the speeds of 120km/h, I have no idea why it does this. It dissapeared for a while, I just fixed a couple of things the C.V. boot came off and quickly fixed that, and the caliper was jammed and I fixed that also, and I changed the pads again. So all of this should be helping but instead it just brought this problem back, any ideas?
Not to mention that before I didnt do anything the problem sorta just fixed it self.
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Old 04-24-2004, 07:38 PM   #2
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That is about the harmonic speed of the Bonneville tire wheel combo so I suspect you may have thrown a wheel weight. Removing and replacing the tire in a different rotation may indrease/decrease it if the rotor is out a bit also.

Might try adding about 5 psi to the inflation and see if that makes a difference. If so I'd check for an out-of-round tire.
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Old 04-24-2004, 07:58 PM   #3
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I have had the same problem before and when i rotated the wheels the vibration went away. Be sure when you rotate you put the wheels on the rear on the same side when you move them to the front and vice versa.
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