I have a 85 Iroc with L98 out of 89 corvette. It ran perfect and then I drive 50 miles and get it warmed up and it wants to die at stop lights and when it does die it will not start until it cools down. About 2 to 3 hours and then it starts and runs until it gets warm again. I can drive around town and it runs and starts good. When it does die it cranks over and just doesn't start until cool. I think that it is maybe ignition module? I replaced fuel pump 3 times in last two years. Napa, Carquest electric pumps and then bought a holley electric pump out of JEGS. So I do not think it is fuel pump. Any help would be greatful.