I have a 92 gmc Sonoma. 4.3 vortec. 4 wheel drive. It started some time back after we rebuilt the engine. and transmission. It started like this. It would crank and drive fine, but after a little it would start jumping chugging and hesitating like it was loosing fuel. But then it wouldn't crank at all. acted like the ignition system was going out. Well we changed the Coil, modular, distributor, distributor cap and rotor, fuel filter and all that good stuff.. At first it worked fine. But after driving it for about 30 minutes it started to chug again and then died. so we changed the fuel pump and the sender. And cleaned the tank. Also changed the Relays for the fuel pump. But it still will not start.. Have no idea what else it could be other than the computer or the injectors/spider. WE NEED HELP!!!!!!We have put so much money into with engine and all other parts, it should run fine. So if anyone has thoughts about this please comment. We need to fix this Fast. Thanks.
