E32 750 transmission rough shifts

[Erlingur]

Zitat von Erich

I do not think that the tranny problem is from tuning chips, usually only the 2 chips in the MOTRONIC are changed and the one in the EML.
But nothing on the transmission module.



Remove the heat shield below the drive shaft, then turn the rear wheel when you have lifted the car, the drive shaft will turn, and you can see marks where the drive shaft touched the tunnel above.
Either the center bearing is not pre-tensioned, not straight installed, or the tranny mounts are worn out.
I had the same problem about 2 years ago, a lot of noise under the car. In my case only the 2 bolts which hold the center bearing were lose and the center bearing was not in line.
The center bearing bracket has on each side slots (not holes) for these bolts.
 http://www.autohausaz.com/search/pro...port%20Bearing

OK, thanks.
I'll look in to this matters. Hopefully I'll find an solution.
Soon I'll post some pics here of my M70 baby