C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Car Vibration- U Joints?

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Old Jan 4, 2002 | 09:34 PM
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89 Bob L's Avatar
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Default Car Vibration- U Joints?

I have an 89 with 76k. The car sometimes vibrated at over 55 mph. I had the tires balanced and an alignment done. The vibration has decreased significantly. However, now I notice a small vibration at 30 mph aand above. Could it be the U-joints, bearings, bushings, and/or ball joints? Any suggestions on where to look first and what easy steps to check the possible problems?
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Old Jan 4, 2002 | 10:33 PM
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Default Re: Car Vibration- U Joints? (89 Bob L)

yep you already know what to check, all of those usually go at 75k+
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Old Jan 4, 2002 | 10:35 PM
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Do the vibrations "change" at all if take your foot off and on the gas? Do you get sort of a "pop pop pop" noise when slowly moving from a stop?
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Old Jan 5, 2002 | 12:28 AM
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Default Re: (scorp508)

the same thing with mine but i don't know how to check the u joint and yeah when i let of the gas the vidration changes
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Old Jan 5, 2002 | 08:56 AM
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Default Re: Car Vibration- U Joints? (89 Bob L)

The vibrations really do not change when you take the foot off of the gas and there is no popping.
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Old Jan 5, 2002 | 04:52 PM
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Default Re: Car Vibration- U Joints? (89 Bob L)

Had similar problems and after several wheel alignments, balancing etc at different shops found a shop with a Hunter GSP 9700 "wheel vibration system". This machine can find and correct things that conventional systems can't. Is able to check and correct vibrations caused by balance (static & dynamic), wheel out of round, tire out of round, etc. The shop I used charged me a cost comparable to wheel balancing at the other places.

I first heard about the system watching PBS TV's Auto Week show.

The car is good up to at least 120 MPH!

Try this web site for more info and shop locations:
http://www.gsp9700.com
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Old Jan 5, 2002 | 05:01 PM
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Default Re: Car Vibration- U Joints? (Wildride)

sometimes its the tires them selves i had the same problem and it was the tires
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