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  1. #1

    Default Bad Vibration on Deceleration

    The driver is telling me that our car has a pretty bad vibration when letting off the gas for a caution or at the flag. The car is a 6 year old Shaw that seems to be working pretty good, other than that. We've replaced the top shock, replaced the pull bar bushings, have the pinion angle at only 6 1/2 degrees. The u joints seem to be fine, so we didn't replace them. Any suggestions on this would be greatly appreciated.

  2. #2
    Join Date
    Jun 2015
    Location
    Bay City, MI
    Posts
    25

    Default

    Possible Drive Shaft, Or Transmission Output Shaft?

  3. #3
    Join Date
    Apr 2010
    Posts
    847

    Default

    sounds internal trans to me. maybe the front cage bearing on the output shaft

  4. #4
    Join Date
    May 2007
    Location
    in a van down by the river
    Posts
    1,892

    Default

    If it is a standard slip yoke transmission. You may try putting a new bushing and seal in it. Also how much yoke is in the transmission?
    I think there should be lifeguards in the genepool.

  5. #5
    Join Date
    Sep 2009
    Posts
    829

    Default

    Drive yoke, driveshaft joints, pinion bearings is what I would start with.

  6. #6
    Join Date
    May 2007
    Location
    in a van down by the river
    Posts
    1,892

    Default

    what about tightening up deceleration bushing on pullbar, or replacing it with a harder one?
    I think there should be lifeguards in the genepool.

  7. #7

    Default

    Thanks for all of your replies to this. Well, we changed both u-joints in the driveshaft, put a new bushing in the Brinn tranny, and still had the problem. We then changed the complete driveshaft and the problem went away. Again, thanks for the help.

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