Maybe it's as simple as the throttle linkage needs to be lubed. It may be binding. These throttle linkages need lubriction at every oil change, but it is often neglected. Use ATF only.

__________________
Steve

1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD

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