What is the fuel pressure? It should be 60-66 psi, even if you changed the pump was it the right one and done correctly. Sometimes you can mess up the wires inside the tank as they are very small. Also was there a harness about a foot long that came with the pump and it wasn't installed. Some of the trucks on those years needed that as it would give you a false indication of a bad pump. Then is the oil pressure switch ok? The oil switch keeps the pump running while the engine is so if you have low pressure or a bad wire/connectionwill cause this. Check yoru fuses in the dash as well as underhood and relay for fuel pump. I'm sending a schematic.
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Thursday, March 24th, 2011 AT 10:08 PM