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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 01-02-2012, 07:01 PM   #1
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Join Date: Aug 2010
Location: PA
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Vibration When accelerating from deadstop

Hello guys,

Every once in awhile I am having weird vibrations coming from differential area when accelerating from 1st and sometimes in second. Its a weird problem and I cannot duplicate it 100% of the time, it happens whenever it happens.

I have recently changed the Guibo and Center bearing, and havent had a problem for about 3 months after doing so, so I am assuming it was all aligned and done good. When I did the maintenance tranny mounts looked brand spanking new.. I am hoping its not center bearing, meaning I messed up aligning it like it was before, which means I would have to use a rope measure and align it all from scratch..

Do you guys think it is the differential mounts or center bearing gone bad?

** Update**

After some testing I realized that this only occurs as I am releasing the clutch, no vibrations whatsoever from differential or driveline when clutch is not involved. No vibration while downshifting. Also tested the driveshaft by putting hand brake on and releasing the clutch and there wasnt any noise from the drive shaft.

Not sure if its clutch related though since it passes the 5th gear take off test fine.

Thank you for the input..

Last edited by doshu; 01-02-2012 at 07:24 PM.
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Old 01-03-2012, 09:08 PM   #2
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Location: Bel Air, MD/ WVU
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Engine mounts, Transmission mounts, Subframe bushings and Differential Bushings all need to be inspected.
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