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General E46 Forum
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Old 02-16-2011, 09:06 PM   #21
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Originally Posted by BeeEmmDoubleU View Post
bringing this thread back to life.

i feel the thump as my auto tranny downshifts ; bushings bad or DIFF is qoinq ? need help asap
My rear diff bushing was bad and I had a noticeable clunk into 1st or Reverse in my manual...and I think your clunk might be something similar...hope so...much easier than diff or trans!

I suppose it could also be csb...I did that too, along with guibo. The bushing is visible and you might notice it squished or noticeable bad otherwise.

And, of course, inspect things...there are other things that clunk...like subframe issues...but no need to go there quite yet...not before an inspection anyway!

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Old 02-16-2011, 09:33 PM   #22
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i had that too ended up with a new rear diff bushing.... but get your subframe checked
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Old 04-01-2013, 12:45 PM   #23
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Not sure if you already checked, but I had a loud metal clank in my rear as well, check ur rear springs/shocks, might be broken or blown

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Old 04-01-2013, 02:08 PM   #24
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Don't want to scare you but since you drive a 323/328 you prolly have the same issue I did. My whole rear end was ripping apart from the chassis....good thing I can weld...
all 4 mounting points for the rear subrame were tearing the sheet metal..

Hair line crank under rear seat

This Mounting point fell completely out when i jacked the car up
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Old 06-26-2015, 04:38 AM   #25
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I have BAD vibration at center support bearing if I accelerate hard, or between 30-35mph. *Automatic Trans by the way* After just replacing both axles and wheel bearing the clunking has returned when I shift into gears and also while I'm coming to a stop as Trans downshifts I usually hear clunk. You can easily hear the Clunk(s) when standing outside by car. I'm running out of things to replace or check! I've Replaced Center support bearing/Guibo/both motor mounts/both transmission mounts/both rear wheel bearings/Main Rear Diff Bushing/Both rear drive axles/Flushed Rear diff fluid/ball joints seem good/I don't think drive shaft is bent or unbalanced because you can only really feel it at 30-35mph and not the entire time. it runs great on highway! Problem has existed for 6 months. I was forced onto a curb going about 30-40 by a driver that pulled out in front of me. It deployed my driver windshield pillar and door airbag. the next day i left on a 5k mile trip.(NOT A SINGLE ISSUE), drove like i always did. about 200 miles from home took of fast from a red light and right about 30mph it started. Ive Been OVER and OVER the car. Ive had it on my lift and apart at least 15 times. nothing seems bent or damaged from it. I don't know why it exists. about a month after it started the Center Support finally tore. replaced CSB/Motor&Trans mounts/Guibo. Problem was not so bad about another month into it i replaced both rear wheel bearings/both axles/Main rear diff bushing and it has been a lot better since. but it still exist if you try to accelerate quickly and clunking has become bad since last attempt to fix it..
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Old 06-26-2015, 10:03 AM   #26
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If you did your flex disk yourself...or even if not...not my comments on recent 'flex disk' thread about how critical the mounting of that properly is.
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