Date registered: Apr 2007
Vehicle: 1992 500SL, 1988 560SL, 1977 450SL, 1999 E320 4matic
Location: Trumbull, Ct.
Mentioned: 5 Post(s)
Quoted: 76 Post(s)
Drivetrain clunk when releasing and pressing down on gas pedal
Concerning my 1992 500SL. I've been having a clunking noise when I press down on the gas pedal and releasing the gas pedal. Its getting worse and louder. When the car is on the lift, wheels hanging, car in Neutral and if I rotate the driveshaft I hear that clunking noise and feel play in the shaft (feels like a half + an inch of play). I can shake the shaft and see (I removed all the shields) that the u-joint and bearing are solid with NO play and I cannot hear a noise. ONLY when I rotate the shaft back and forth I can hear the noise and feel the play. It appears like I have play in the rear differential but I hear louder and feel more play coming from the rear of the transmission. My MB flex disc are 6 months old and show no cracks. Motor mounts, strut mounts, transmission mount, all have been recently replaced. Anyone have an opinion or any thoughts for further checking. Just hope it's not the transmission. The transmission shifts perfectly smooth. BTW, I have search the forum with no results.