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Knocking, clunk noise from diff ? rear end somewhere HELP

Posted: Sat May 03, 2014 6:19 pm
by Shiz
Hi guys, I noticed this last year, but essentially if I was to give the right foot plenty at junctions, you would hear this almight thud, like a clunking noise from the diff.. I heard it last year before she went in for hibernation, but its really annoying me now. Its a 318i 1990. I have a feeling there is an lsd in it, or a very good open diff. The noise almost feels like its locking the diff with an almight bang. Then saying that I notice it sometimes changing through the gears. I am aware there is bearings, and possible bushions at the rear. But does this problem sound like anything obvious. Advice and help much appreciated asap guys. Thanks

Re: Knocking, clunk noise from diff ? rear end somewhere HEL

Posted: Sat May 03, 2014 6:38 pm
by Speedtouch
Could also be loose propshaft, or even wheel bolts, or a worn out propshaft guibo.


Re: Knocking, clunk noise from diff ? rear end somewhere HEL

Posted: Sat May 03, 2014 7:30 pm
by magpie
check the x4 bolts that holt the diff to the beam are tight ,i've seen these work loose before causing the diff to clonk about .