I have an Intrepid in the shop with the 3.3L engine. Car will stall and/or run rough as it begins to warm up. Cruise light comes on and off at idle when this is occuring. All inputs to the PCM are good, no codes. New crank and cam sensors. Can this be caused by a worn timing chain? Had a 3.5L intrepid once that had a timing belt off one tooth that acted similar.