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E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 03-11-2014, 09:57 AM   #1
k3m0-330i-e90
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drive line issues

Hello. Have a question regarding driveline issues. My e46 is a 325xi and i bought it making banging nosies right away knew it was drive shaft center support bearing. So i replaced that and still having a issue. I belive that they drove on a shot bearing making the ujoints go bad. Now question is dose that sound right and is the drive shaft blannced like front with rear do i have to replace both or could i just do one?
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Old 03-11-2014, 10:40 AM   #2
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Going to need more info than this. Where/when/how does the "banging" sound happen?
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Old 03-12-2014, 05:55 PM   #3
k3m0-330i-e90
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Well the banging sound was happening while the center bearing was shot like rubber was coming off. So guessing that the drive shaft was banging around it messed up the u joints. And once u pass 10-15 mph there's this vibration and when speeding up is bad but once off the gas it really vibrats badly. Making me thing the drive shaft lost alignment and the joints went bad.
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Old 03-13-2014, 11:34 AM   #4
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Quote:
Originally Posted by k3m0-330i-e90 View Post
Well the banging sound was happening while the center bearing was shot like rubber was coming off. So guessing that the drive shaft was banging around it messed up the u joints. And once u pass 10-15 mph there's this vibration and when speeding up is bad but once off the gas it really vibrats badly. Making me thing the drive shaft lost alignment and the joints went bad.
The vibration is likely the CSB either not being adjusted or seated right, OR the shaft wasn't reassembled perfectly after the bearing was slipped on. Ask the tech if he marked the shaft.
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Old 03-13-2014, 03:53 PM   #5
k3m0-330i-e90
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shaft was marked and is dot on.. and bearing is put on good but is it possible for the u joints to go bad?
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Old 03-13-2014, 04:02 PM   #6
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The shaft is balanced as one piece, and the machine-shops near me say they cannot be balanced aftermarket. Yes, we've seen e36 u-joints bind plenty, so I imagine it's only a matter of time untill we see the e46s do the same.
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Old 03-13-2014, 04:06 PM   #7
k3m0-330i-e90
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well because this is what was the problem... the owner before me was driving on a shot center drive shaft bearling like to the point where there was no rubber on the bearing and the drive shaft had a lot of play and im thinking that the ujoints got messed up because of it banging around on the bearing housing. understand..
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2003 E46 m3 Vert
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1993 325i e36 - sold
2006 330i e90 - sold
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