I would also like to add that when the engine is warm, have the trans in drive, with foot on the brake, the RPMs can flucuate from 100-500 RPM sometimes. But then when I hit the gas pedal, it's a little okay, especially when I take off after a traffic light turns green.

__________________
1990 Mercedes 300 SEL (320,000 miles)
1994 Mercedes E420 (140,000 miles)