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2 fuel pumps dying due to electrical issues?

Motor Vehicle Maintenance & Repair Asked on December 27, 2020

I bought a 95 240sx se as a project car with a blacktop sr swapped in it. I bought it knowing it didn’t run. It cranks but no fuel pump prime. So I replaced the fuel pump and it started up. After driving it around for a few minutes it died. I realized that it had no fuel so I filled it up but there was no fuel pump prime again and now it barely wants to crank. All the fuses are good and most of the ground wires are good so now I am stuck. Any help would be greatly appreciated

One Answer

The ECU controls the fuel pump by providing it a ground. If you have a wiring diagram you could find the pin on the ECU connector and see if it's ~0 volts to ground for a few seconds after turning the key to start. 'Most grounds are ok' sounds suspicious. Or maybe find the fuel pump connector (under back seat?)and GUESS which one is the ground pin and jumper it to see if pump runs

Answered by user1552969 on December 27, 2020

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