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      10-27-2017, 10:16 AM   #1
panchofarrera
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Clunk when decelerating

I have a 2008 BMW 335xi MT with 130k miles. When I am slowing down (either in gear or neutral) I get repeated clunks which are audible and felt on my shifter. Would this suggest differential problems or an engine mount issue?

Note: The car also vibrates noticeably on idle with the AC on.

Thoughts?
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      10-27-2017, 11:14 AM   #2
Wolf 335
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Probably the new spark plugs or injectors...

Just kidding!


Likely your drive shaft hanger bearing is gone. Rubber around the bearing wears and it starts to move and hit the sides.

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      10-27-2017, 11:30 AM   #3
panchofarrera
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Quote:
Originally Posted by Wolf 335 View Post
Probably the new spark plugs or injectors...

Just kidding!


Likely your drive shaft hanger bearing is gone. Rubber around the bearing wears and it starts to move and hit the sides.

Attachment 1712098
I swear if my sparks or injectors ever go bad again I will get an anxiety atack. Ok, is there an easy way to check this for failure? And how hard is it to change? Do I need to drop the subframe or anything like that?
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      10-27-2017, 11:43 AM   #4
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Quote:
Originally Posted by panchofarrera View Post
I swear if my sparks or injectors ever go bad again I will get an anxiety atack. Ok, is there an easy way to check this for failure? And how hard is it to change? Do I need to drop the subframe or anything like that?
To change it I believe you'll have to drop the exhaust and heat shields.

To check it, you'll have to get under the car and see if you can "grab the shaft" and move it around. Just looking at the component may not be enough as the tears are sometimes not that visible.

Edit: Googled procedure http://www.pelicanparts.com/BMW/tech..._Replacing.htm
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      07-28-2019, 07:42 PM   #5
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My 2009 335xi manual transmission had clunking on deceleration but only when the car had warmed up. I changed the transfer case fluid and 95% of the clunking is gone. I have not yet reset the adaptation.
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      12-15-2019, 10:31 PM   #6
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Quote:
Originally Posted by panchofarrera View Post
I have a 2008 BMW 335xi MT with 130k miles. When I am slowing down (either in gear or neutral) I get repeated clunks which are audible and felt on my shifter. Would this suggest differential problems or an engine mount issue?

Note: The car also vibrates noticeably on idle with the AC on.

Thoughts?
OP did you ever figure this out? Having the same issue
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      05-05-2022, 11:50 AM   #7
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OP did you ever figure this out? Having the same issue
Also having this issue. Not sure what it is. Found a few posts on this without the solution/confirmation.

..
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