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-   -   Subframe Noise (http://www.bimmerfest.com/forums/showthread.php?t=654477)

Costa 10-27-2012 04:07 PM

Subframe Noise
 
Under sudden acceleration from a standstill I hear and feel a clunk in the rear end. My first and only guess so far is the subframe mounts. I'm getting these replaced soon, I just want to make sure that's what's causing the clunk.

robertobaggio20 10-27-2012 04:22 PM

Do you feel the clunk when you decelerate quickly from speed ? If you do, then its the rear differential, that has developed too much free play.

1995i540 10-27-2012 05:42 PM

Quote:

Originally Posted by Costa (Post 7161342)
Under sudden acceleration from a standstill I hear and feel a clunk in the rear end. My first and only guess so far is the subframe mounts. I'm getting these replaced soon, I just want to make sure that's what's causing the clunk.

Subframe mounts don't really cause clunking, if it's 100% in the rear it's your diff mounts or the part where diff mounts to flange I forgot what's it's called but its responsible for major clunking when worn especially when doing downshifting.

Your best bet is to inspect it.

Costa 10-27-2012 08:31 PM

Thanks for your posts guys, I am starting to believe it is the diff. I'm getting the gear oil changed on the 7th of November and during that time I'm going to try and replace all worn driveline pieces. I'll update this thread when I'm doing the work. (hopefully with photos)

BMWFatherFigure 10-28-2012 04:27 AM

Could be slip joint on drive shaft?

Costa 10-28-2012 01:42 PM

I have no idea yet, just gathering ideas. It's to the point where it starting to annoy me a lot when I'm accelerating from a stop

M540FELLA 10-28-2012 04:34 PM

It may be subframe mounts http://www.bmwe34.net/E34main/Mainte...ameBushing.htm


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