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Sounds like a bad pressure regulator. The regulator is suppose to adjust the pump speed to match demand. Some units work by counting the RPM with a crankshaft sensor. Check fuel pressure at test port. Sometimes the pressure needs to be adjusted when changing a pump.
Park in a quite location. Get in the back seat. Have someone else turn the ignition switch on without starting the vehicle. Listen for the fuel pump. It will come on and run for a few seconds. If you hear nothing the Fuel Pump is defective, or the fuel pump relay or fuse is bad. If you hear it, then you know it is running but that does not mean it is actually pumping fuel. To verify that you will need a fuel pressure test. Your car is 11 years old, have you replaced the fuel filter. If not replace it before proceeding.
Normally after replacement of the fuel pump you need to get the fuel flowing back through the system again. To do this, turn the ignition key until you hear the fuel pump kick in for a few seconds, then turn key back to off. Repeat this several times to get the fuel flowing. If this doesn't help, you will need to ensure that the fuel pump is actually coming on. Let me know
Was there fuel pressure before you changed everything? It could also be the pressure regulator sticking or bad. When you crank it over and let off the key you should hear the fuel pump run for a couple seconds and then shut off. If it is doing that then I would be looking to see if you have likes hooked up wrong at the back of the engine or try replacing the pressure regulator.
Try the ignition control module located under the distributor cap $30 - $60. This is one of two parts on this truck that will cause it to not run or shut down after running for only a short time. The other is the fuel pump I think it is safe to rule that out as your problem