These are the parts I have replaced on the truck.....fuel filter....Air flow....throttle body and sensor.....sparkplugs and wires....mass airflow....O2 sensors....2 ignition coils....fuel injector idle control valve....throttle position sensor....timimg belt and pulley and the computer. After doing all that when I start the truck it still cuts off. it takes a few times starting it before it will stay on, but I have to let it stay running for about 30 minutes before i can drive it and it also back fires. Please tell me what I should do next
Take it to a major auto parts store and have it scanned for free before you have to mortgage your first born to buy more parts. It could be something as simple as partially clogged fuel injectors.
Backfiring generally means there is too much gas in the intake manifold. That leads me in the direction of clogged/ leaking fuel injectors as @Doc says. Hold the throttle down and crank it over. It should start and stay running. Run it at a higher RPM for a few seconds to clear the gas and see if it stays running after that.
well you should try doing some diagnosis before loading up the parts canon.
Start by measuring the fuel pressure.
