After doing a search, I thought of one more thing. I do hear a popping sound many times when I step on the gas. COuld this be a lean pop? I thought it was some drivetrain mount... but inspection showed nothing out of the ordinary (flex disc recently replaced)... I thought they overlooked something.
So it might be related? Is the lean pop always audible?
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)