Hi,
Does anyone have any idea why I am getting a grumble/vibration from my gear shift selector, It only does this at around 1,100 to 1,200 RPM's, I am thinking motor mounts or gear selector bushings or both.
Has anyone had this happen to them? (1984 300SD)
Thank You!!!
Jim

time to check the flex disc's. there are two. one by the diff, and one behind the trans.
Don't wait on this grumble sound. It could be a huge headache to repair if it lets go.

I just changed my radiator to transmission hoses, ATF ,adjusted my parking brake/brake pads, inspected my flex disk and checked the rubber donuts on the exhaust while I had it up on the hoist.

I changed the transmission rear mount about 6 months ago. I thought this grumble might be a common issue with this car.
Thanks,
Jim