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      06-14-2014, 08:51 AM   #1
Time Lord
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changing diff mounts, guibo and center support bearing.

getting some clunking and wanted to make sure i hit up any possible weak point. am i missing anything? thank you
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      06-14-2014, 10:47 AM   #2
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How many miles do you have that you have worn out a guibo and CSB? I understand the diff mounts are a weak point, but had not read the rest were problems.
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      06-14-2014, 10:57 AM   #3
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Quote:
Originally Posted by pbonsalb View Post
How many miles do you have that you have worn out a guibo and CSB? I understand the diff mounts are a weak point, but had not read the rest were problems.
i have 60k its a 6 speed. you have given me some advice already!!! maybe it is just the diff mounts. should i attack just that first or change everything out?
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      06-14-2014, 11:20 AM   #4
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What you should do is inspect said items and see if they actually need replacing. Try and at least localize the sound. Each of those items make a noise under different circumstances.
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      06-14-2014, 06:29 PM   #5
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If you are getting clunking, something is wrong. The only things I have read about that have gone are motor mounts and diff mounts, with diff mounts being the more likely. Check the diff mount bolts.
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      06-14-2014, 10:09 PM   #6
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I've had clunking from day 1 for 80k miles so Id have no clue when pathological clunking occurs!
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      06-14-2014, 11:39 PM   #7
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When do you get the clunking?
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      06-15-2014, 12:41 AM   #8
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M clunking is normal drivetrain lash. Even the manual states it. I wouldn't start changing parts just yet.
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      06-15-2014, 06:44 AM   #9
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I assumed the OP did not have a clunking and then a clunking began. If so, I would look for a problem. If the car has clunked from Day One, that would be different.
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      06-15-2014, 09:57 AM   #10
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i can hear the clunk under load when shifting at high rpm. in my e46 m3 i changed out the center support bearing and guibo and it went away. i just thought it was the same for the e90 m3.
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