During acceleration from a stop in my ‘92 740 wagon there’s a bumping sound and feeling from under the car. Upon inspection I found that I could grab the driveshaft near the Center support Bearing and move it enough to cause it to bump on the car. I suspect this is what’s causing the bumping during acceleration. The car runs smooth at all speeds and there’s no humming or vibration, just this clunking/bumping during acceleration from a stop. Is it likely my Support Bearing or could it be something else like the U Joints?

Michael
Melbourne, Fla

1985 740 470k
1992 745 215k
2011 Mitsubishi Outlander 1k