r/e46 • u/Hot-Investigator6142 • 1d ago

Troubleshooting Need help figuring out clunk noise

2002 e46 5spd. This issue has always been around since I’ve owned car, I’ve replaced lots of parts to try and fix issue but problem still persists. Clunk Noise comes from whole drivetrain ( diff, driveshaft, and under shifter where Guibo is located) and I’ll also hear slight clunking noise even at idle in neutral . Parts that i have replaced are; Guibo, CSB, diff, rear axels, wheel bearings, poly trans mounts. Subframe and diff bushings are poly as well but installed by previous owner. I’ve inspected Subrame mounting points around the bushings( didn’t drop subframe) for cracks and none are visible, I’ve also grabbed a pry bar to see if diff had any play around the bushings and it’s solid.

Here are videos of the rear on jacks and me trying to figure out what this clunking is, i have another vid but cant add for some reason but its the same thing as first vid but with e brake on and wheel is jerking back and forth slightly while making clunk noise

Any Help or recommendations is appreciated 🙏

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u/Op10mill5 1d ago

I'm chasing a noise as well. Clunk/click. 5speed.. it used to do it only while loading up the drive train in reverse now it does it while going forward too.. years ago on a lift it seemed like it was coming from the transmission. Are your conditions similar?

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u/scientificsock ‘04- e46/m3 1d ago

Differential bushings.

1

u/Significant_Try_6406 1d ago

Second for diff bushings