Help diagnose LSD Differential noise

[NakaE46]

I need a help with diagnosing noise that seems to come from LSD. It happens as I take my foot off of accelerator and car rolls with inertia at low speeds, it sounds like a 5-6 consecutive bearing knocking type noise and generally wining/noisy back there. Please help to figure out which parts in diff or bearings can be good suspects. Thanks

[jlevie]

That could be incorrect pinion to ring gear clearance from worn bearings. Or there could be issues with the drive shaft or half shafts. Or a combination for issues. Have a pro diagnosis the car before throwing parts at it.

[NakaE46]

That could be incorrect pinion to ring gear clearance from worn bearings. Or there could be issues with the drive shaft or half shafts. Or a combination for issues. Have a pro diagnosis the car before throwing parts at it.

Thanks, I will have a mechanic look at it, i'll post the diagnosis

[Earendil]

Please do post the answer/solution as I might have a similar issue.

[Wanganstyle]

If its been ran long enough with dead pinion bearings the ring and pinion will show funny wear patterns.

First item that goes on these units is the 2x pinion bearings and the matching races. Load the pinon flange up and down and see if thers is much play: there should be no vertical play or slop there but still spin smoothly when force imputed

A bad cv axel in the rear also sounds funny so check those as well if you are Inspecting


Sent from my GT-N7100 using Tapatalk 2