if engine light comes on, i turn it off and restart it and, the light goes off. if i drive with the light on, it will hesitate and .the rpm will be too high fot the speed im going. it is so intermittent that i dont know. i have new wires plugs coil packs ignition module fuel filter. fuel pressure is good . not a terrible issue, but it defies logic. i am a decent mechanic and i realize im gonna wear out my starter but i dont know what else could be damaged in the process