Originally Posted by Bruno
on a 633 csi, complaint of vibration right above 60km/hr (37 mph).
Nasty noise like if you were driving on very bad road.
The rear diff mount was ripping appart the body so we welded that in place.
Still the weird noise.
The center bearing is shot and the driveshaft was moving around (no vabration below 37mph). I am in the process of changing it.
Could it be a bad wheel?? Could it be driveshaft that need to be balanced?
This is a weird one as the car is perfect below 37 mph. as soon as you hit 37 mph and above, you have a bad noise from the back...
As soon as you go right below 37mph everything is perfect again....
Any clues?
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
I saw a problem like that once on a modified 540. It had huge rubber on the rears, like 18's, and the camber modified. When it got above 40mph it shook so bad it would knock your fillings out. We never figued it out, but it went away when we changed out the wheels, and reset the stock camber settings.
ps, this one blew out its center bearing also, so I would think its as a result of the problem rather than the cause.
Last edited by tim; 10-20-2004 at 01:24 PM.
prob just the center bearing causing all the problems
95 E34 530I V2.37
===========
Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
All the center bearings problem I have seen on the 5 series were giving vibrations and knocking on 1st gear then it was smooth...Originally Posted by 632 Regal
I wonder about rear wheel bearings and maybe diff pinion bearing...
How do you check the pinion bearing on the diff???
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
with the wheels and brakes removed. You want to feel for a bit of preload before the axle shafts spin, appx .06 play between the gears and should be silky smooth.
95 E34 530I V2.37
===========
Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy