I have a 90 GT that will die after driving it awhile. We have found the problem to be no spark. After replacing the ignition module, coil, and installing a new cap and rotor, the problem returned. After replacing these things, I drove the car on 6 separate occassions and had no problems, then drove the car for about 25 minutes, parked it, and let it sit for about 35 to 40 minutes. When I started driving the car again, after about 3 minutes , it died and wouldn't refire. I returned to the car 3 hours later and it fired right up and drove home. Anyone have any ideas? I really appreciate any advice you can give!