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knock..knock..knock when backing up after driveshaft repair?????

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Old 02-28-2009, 12:11 PM
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Default knock..knock..knock when backing up after driveshaft repair?????

Maybe the U joint hitting the heat sheild?

Any other ideas? Only hear it in Reverse.
Old 02-28-2009, 12:27 PM
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Default Mine hit the heatshield after installing a reman driveshaft. U-joint was much larger than OEM.

It does make sense since the front of the diff shifts down slightly when loaded in reverse.

Pull the shield and have a look... it will show scrapes if thats it. Just reshape it a little to allow more room.
Old 02-28-2009, 02:31 PM
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Same U Joint...but will check heatsheild. Thanks!
Old 02-28-2009, 02:34 PM
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Get under the car... i'm sure it will be pretty obvious
Old 02-28-2009, 07:11 PM
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Is it a Click or a Knock?
Old 03-01-2009, 10:45 AM
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Default Did you replace just the bad CV joint you had or a rebuilt driveshaft assembly??

Reason I ask is b/c my center support bearing made a knocking sound when it went out. Driveshaft was hitting something, don't know what though.
Old 03-01-2009, 12:27 PM
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Just the rear joint!
Old 03-01-2009, 05:29 PM
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It was the heat sheild: All better now....
Old 03-03-2009, 09:41 AM
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Might wanna look at the center support bearing then...
Old 03-03-2009, 07:22 PM
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looks good...like I posted above...all better, it was bent & rubbing heatsheild
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