Question about 1985 Dodge Ram 3500

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1990 dodge 360 motor 4 speed trans when shifting motor stays at high idle takes too long to idle down, why?

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It is more than likely in the idle air control valve on the truck. It more than likely has a lot of carbon build up on it causing it not to work as effectively as it should. Remove the motor and clean the plunger and the seat on the throttle body and see if this helps. If it still does it you will have to replace the valve.

Posted on Sep 12, 2009

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