Fuel cut

[Loswages05]

Ok so when I drive my car it cuts fuel bad then got it home the pump won't come on with the key I know I was thinking pump but when I hook the test wire up with power it runs starts up and I can power boost it up I replace the fuel pump relay I put a hot wire kidding it still same thing

 

[TexasT]

Have you measured voltage at the pump? Oil pressure switch has something to do with it. I don't have a diagram in front of me. What about pressure at the rail? Is it pressurizing and holding it? Pump should prime and run when car starts. Sounds like pump might be good, just a wire or sensor prob not telling pump to come on.

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[Loswages05]

It was the oil switch