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Old 03-31-2008, 12:45 AM   #1
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vibrations - help!

I just bought a 90 YJ and while shifting into each gear it vibrates while excelerating. Had the tires balanced - didn't fix the problem. Someone told me that it could be the rear u joint but then other people say that's not the problem - it could be chatter marks on the clutch??? HUH. If someone could give me a couple of things to start looking at so I could start somewhere and go from there - would be appreciated. Thanks

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Old 03-31-2008, 01:12 AM   #2
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tires, u-joins, driveshaft, wheels, theres alot of things basically get your wheels ballanced first, check for play in the u-joints, including the front d-shaft and axle, then if that dont help look into tires. good luck

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Old 03-31-2008, 01:14 AM   #3
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oh also check your t-case output bering, try to wiggle the d-shaft if it moves and your SURE its not the u-joint probable cause is the out put bering.
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Old 03-31-2008, 10:41 AM   #4
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yup, check u joints, especially rear drive shaft.
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Old 03-31-2008, 04:40 PM   #5
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Is there any lift on the vehicle? If so, I would suspect the rear driveshaft u-joints. If not, see above^^^
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