When I am sitting at a light my car revs it self for no reason. Why? it is not much of a revs but it is noticeable.
85 500sel

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Dan Younes
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1985 euro 500sel 223k
1986 420sel 86k soon 2 be
1981 300sd 285k sold
1979 240d 298k sold
1983 300sd 272k sold
1989 chrysler 2.2l Turbo
Leabaron 140k
1989 Dodge Carvan Se 295k
1994 S500
(hopefully someday)

Mine turned out to be the Idle Speed Control module.

on my car it was replaced in 89 with 37k is it normal for them to go bad