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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > Front diff issue with new video



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      02-10-2020, 07:49 PM   #1
vbgagnon
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Front diff issue with new video

I'v found a video that replicates the sound that I'm having on Youtube. It is a metallic clanking sound. Can someone shed some light on this for me?



Last edited by vbgagnon; 02-13-2020 at 09:34 AM.. Reason: Total remake of the post.
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      02-13-2020, 09:28 AM   #2
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Changed the video. Can anyone help?
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      02-14-2020, 10:43 AM   #3
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I guess not.
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      02-14-2020, 01:52 PM   #4
Soravia
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Is it bone dry on the fluid? Usually seals will leak the fluid and your diff might be dead from not having any fluid
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      02-18-2020, 02:01 PM   #5
acmf
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Had a similar clunk sorted recently. In my case it was caused by worn front propeller shaft joints. Diff was shot as well, but that's a different story and a whole different grinding sound.

You may want to have prop shaft and/or axles and their CV joints checked.
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      02-21-2020, 04:20 PM   #6
vbgagnon
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Quote:
Originally Posted by acmf View Post
Had a similar clunk sorted recently. In my case it was caused by worn front propeller shaft joints. Diff was shot as well, but that's a different story and a whole different grinding sound.

You may want to have prop shaft and/or axles and their CV joints checked.
I changed the front passenger cv shaft, as a boot was cut. That didn't solve the problem.

The problem ended up being the front drive shaft u-joints were finished. I'm currently driving with only RWD and there is no sound.
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      02-22-2020, 10:45 AM   #7
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Quote:
Originally Posted by vbgagnon View Post
I changed the front passenger cv shaft, as a boot was cut. That didn't solve the problem.

The problem ended up being the front drive shaft u-joints were finished. I'm currently driving with only RWD and there is no sound.
Front axles are dirt cheap. Get them replaced. Replace the front diff output seals while at it.
Be sure to use OE C clip pins. Aftermarket shafts may come with C clip pins too large and can jam between the spline teeths. The C Clips and splines have to be lubed heavily during install. You will need someone to hold the shaft straight while another use a heavy mullet to hammer it in place.
Not too much force is needed though. If you need a lot of force, C-clip came off the notch.
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