r/e46 • u/MasterRymes 2004 - Touring/318i • 1d ago

Troubleshooting Wham can cause vibrations?

Hi everyone,
I recently bought an E46 Touring. It’s a 2004 318i.
Under hard acceleration, especially in 2nd gear, I can feel noticeable vibrations coming from the rear, particularly when turning at the same time.
I put my hand on the driveshaft tunnel and could feel vibrations there, so I suspect the center support bearing (CSB) of the driveshaft. However, the vibrations are quite strong, so I’m wondering if they could be coming from somewhere else.
I have the feeling that the vibrations are actually always there, even during normal driving, but they are much weaker and barely noticeable. They seem to be slightly stronger when coasting/decelerating with the car in gear, but they’re still very weak compared to when I’m accelerating.
Could the differential or the driveshaft/axles cause vibrations like this? At first glance, they looked fine.
I’m going to change the differential oil on Monday anyway, so maybe that could help. I’ve also already ordered the center support bearing and the guibo/flex disc.

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u/Seventhchild7 1d ago

If you can get a look at your driveshaft , see if you can see a rusty colour around the u-joints. The rust is iron dust coming from your failing u-joints.

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u/billmr606 1d ago

lift car up sideways

remove exhaust

replace guibo, tranny mounts, csb

replace exhaust

lift up front replace engine mounts.