I've been working on my 1987 YJ Wrangler 2.5L TBI for sometime now. I put in a new gas pump, gas tank, fuel filter plugs and a distributor cap. Before that I put in a new radiator due to an overheating issue. When I get out and drive for about 20 minutes it just dies and will not start back up. I let it sit for about 10 minutes and I can get another 20 minute run out of it. Please help me to get cruising again.