the car has been running good but the other day i got my foot in to it a little harder and it would cut out like it was starved for gas or spark was weak. if i came off the throttle it would run fine again. i'm learning to use my snap on 2500 but i have a hard code concerning my park neutral safety switch and can't run a koer test. just thought someone may have had the same issue. the coil and engine control module are relatively new and had new plugs and wires about 3 years ago. car is a 1993 sc