Originally Posted by
uncabob
"Two pin plug". Oil pressure sensor? On my engine it is just below the distributor. ('84 350). Keeps the fuel pump running after oil pressure gets up.If your engine dies soon after starting, it sounds like your fuel pump relay circuit is giving you a prime but oil pressure is not being recognized by the ECM. Try watching fuel pressure key-on-engine-off. If the fuel pump stops after a few seconds the ECM has turned off the relay and the pressure sensor hasn't taken over the fuel pump circuit. I don't know your ECM, but you can check the diagrams to see where the sensor connects to it and check for continuity to it. One side to ECM, the other to ground. If this is your problem, a paper clip between the pins of the plug will keep your engine running. Would recommend using pressure sensor as final solution though.
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