My 1993 c4 350 stock engine just shut off while driving and after sitting would start and run but shut off again after about 5 mi. It runs good no miss or ruff running and has not done this before. After sitting it alway starts on the first crank. It acts like it is not getting gas. If i try to start it just after it has turned off it will always start but not run for more than a couple of seconds then stops like there is no gas getting to the injectors. But after sitting for several 5-20 mins. It starts and runs fine. No problem lights are displayed after staring. Any idea's