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      03-08-2021, 09:44 AM   #1
Joop1
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Light Clunk - Starting off in 1st, sometimes backing up

This clunk involves disengaging the clutch while backing up or taking off carefully.

If you had to imagine the sound its like if you had an thin aluminum hollow tube sealed on both ends in your hand and you deliberately tap one end on your garage floor. Not loud by any means but a light solid sound, It's like the drive shaft is a bit out of sync as you let the clutch out.

Does anyone had this same problem (and hopefully a solution)?

In the E85/E86 section of this forum I found a very similar problem.
https://www.zpost.com/forums/showthread.php?t=290095

The problem appeared to be the differential input flange mating surface with the input drive pinion was insufficiently greased (post 16). There was also an SIB code for the problem. But the E89 was not mentioned in the SIB.

What do you think. Could it be the same problem?

Joop
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