The throttle body is probably a likely suspect.

On W124 chassis cars with the M104 engine cars with ASR, it is usually the throttle actuator which causes the problem.

__________________
Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".