I have a 1993 RT/10 all stock (except exhaust) that has been missing intermittently. It seems to run strong at higher RPM's, but at idle and at constant speed it will hesitate as if a cylinder is missing. The key on / key off codes are 12, 33, 55 - so none of those are applicable (standard battery disconnected recently / AC clutch / end code). I put new spark plugs and new wires on it, no change. I'm now suspecting fuel? But since it runs strong under acceleration not sure it's a fuel flow issue? Any ideas or suggestions would be greatly appreciated. Thanks.