Question about 1993 Oldsmobile Cutlass Ciera

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Short circuit in fuel pump electrical circuit

Fuel pump fuse blew twice, both times as I was slowing to stop. Now after third time blown it blows immediately when I try to replace, Even with switch off and before I even get it plugged in.

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Sounds like a dead short in the wiring somewhere. Follow the wires from the pump forward and look for any chafed wires.

Posted on Mar 11, 2009

  • Eldric Venne
    Eldric Venne Mar 11, 2009

    Sounds like a dead short in the wiring somewhere. Follow the wires from the pump forward and look for any chafed wires.

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It's a single wire terminal with plastic connect sensor from the engine block.


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===

When this switch is failing to provide the correct pressure to the ECU. The wiring harness can overheat and eventually create a short.

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===

DO NOT drive the truck until you change the oil pressure switch.

After you change the switch,you should spend sometime to inspect the wiring between the fuel pump relay,ECU and fuel pump.


Please post up day on the comment window/page.

I will follow up on it later.


Good luck.

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