Need some help tracking down why the eng wont drop back to idle when I let off the throttle. when cruising at gighway speeds and I let up the eng continues at its present speed then gradually slows. Any ideas or has any one had this problem.
thanks.
Tom Brown Virginia section

1995 E300 diesel 111K
1995 C 220 (hers)

Did this ever get resolved? I am investigating one right now with the same issue. The engine wiring harness has been undated. I cleaned and lubed the throttle linkage and did not see an issue this morning when I drove to work but I am not sure the issue is resolved. It is pretty sporadic and mostly happens during the initial 15 minutes of driving when the car is started cold.

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Jim