380sl races at drive and neutral to 1500 rpm initial idle is about 700rpm at cold start runs smooth at 700 but is rough if shift at stop to neutral. could this be the idle control valve a tech looked at it recently and said it was probably rthat since everything else is almost new.
directions on removing ang cleaning idle control valve iknow on the 380sl they are about $250 can they be cleaned?
can parts be replaced in them?
anything else cause racing idle at neutral and park?

Use some carb cleaner, and a set of brushes that will fit in the ofrices.

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1984 380SL-driving and service privileges.