I HAVE A DODGE RAM 15OO 2003 WITH 70,OOO AND I JUST NOTICE THIS IDLING PROBLEM THIS MORNG WHEN MY TRUCK WAS COLD I STARTED AND THE RPMS WHEN HIGH TO LOW AND SHUT OFF PLEASE HELP THERES NO CHECK ENGINE LIGHT ON
Could be many different things. I would look at cleaning the throttle body and idle air control valve or replacing your filters if you haven't in a while. Also look for a vacuum leak.
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