1987 325 is - Vibration after Transmision replacement

It sounds like your mechanic seperated the driveshaft while it was out and didn't put it back together in the correct orientation. Doing so can put it out of balance causing vibration. A driveshaft is balanced assembled, and the sections must not be misaligned.

Other posibilities are loose or improperly installed driveline parts such as transmission mounts, guibo, or center support bearing.

Were you billed for a new guibo? It might have been a good idea just to replace it when he was in there.

Another possibility is that the driveshaft was not reassembled with everything lined up perfectly.

Should not be a huge deal for the mechanic to fix.

--scott

I agree, the first thing that springs to mind would be the propshaft. Although, I would have expected more of a vibration at around 60MPH (100KM).

Of course, without hearing/feeling the noise, it's difficult to comment. So, it could also be a vibration/resonance from the exhaust, heat shields, etc.

Let the mechanic have a look.

Thanks so much for the feedback. looks like it was driveshaft calibration. Problem easily solved!!

acceleration