I have a 93 GTX that will not start. Pulled it from the water last year and it started but seemed to run on one cylinder only, and would surge as if 2 cylinder were kicking in while idleing. Have checked compression and both cylinders are at 150 LBS. Checked for coil resistance and both are at 1500 OHMS as suggested. Finally today I place a meter on the plug wires and noted a very poor voltage from one plug. Is it possible the coil has crapped out on one cyliner only? And if so does anyone know of aftermarket coils available? Dealer wants $175 for a coil. Oh and I did remove the plug boots and trimmed 1/4" off the wires and reassembled. As noted the ohms resistance is good but the spark on one cylinder is poor.