I understand you completely! My 1989 model has clunks and bumps, and the latest solution I found was to replace the bushings in the suspension ball joint carrier, (braking reaction ball joint?). Still clunking and light knocking in the front as I drive. My next project will be the upper control arm, with the ball joint in it. I believe the whole arm has to go, looks like the ball joint cannot be pressed out and replaced.....fun, fun!

The noises are suspension though. The engine and drivetrain are very quiet in my car, even quieter than my 1993 Olds. But no clunking from the Olds yet!

Wear earplugs, and turn up the music!

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1989 560SEL (172k)
1989 325IC (122K)
2004 Suzuki Volusia LE (3500 miles)
2005 Yamaha Road Star (20 K miles)