tehSteve
GrayBeard McGootch
It is most definitely in 95% of cases the throw out bearing in combination with the dual mass flywheel bopping it around at ignition cut off from the back compression of the engine. The play between the throw-out bearing race and input shaft bearing is not perfect either which makes room for the rattle noise from the engine vibrations during shutoff.
The other 5% of cases are input shaft bearing on transmission gone bad depending on how severe the noise is.
I wouldn't even worry about the noise on shutoff.
This is extremely common on 350z and BMWs, specifically z4s and we just ignore it.
Also I have 120k miles stock clutch/everything on my 05 z4 3.0i and it's been making the rattle/noise on shutdown since day1.
The other 5% of cases are input shaft bearing on transmission gone bad depending on how severe the noise is.
I wouldn't even worry about the noise on shutoff.
This is extremely common on 350z and BMWs, specifically z4s and we just ignore it.
Also I have 120k miles stock clutch/everything on my 05 z4 3.0i and it's been making the rattle/noise on shutdown since day1.
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