Question about 1988 Ford F 150

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No power to fuel pump or fuel pump wiring harness...

My 1988 ford f150 will not start... the ignition system is fine, i have checked all of that. But my fuel pump is getting no power at all. Everything is brand new on it, i just bought all new pumps, sending unit etc... but still no power. Then i replaced the inertia switch and powertrain control module and still nothing... i am completely out of ideas... What have i overlooked? I need to find a diagram of a 1989 Ford F150 to tell me how the wires run from the relay to the fuel pumps.

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Try the electrical ignition switch on the steering wheel colum

Posted on Aug 25, 2009

  • toni_oh Jul 06, 2011

    where exactly is that on colum?

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First go from the chassis & check for 12v lines if there is 12v present when you check fromm the chassis then you have a bad ground connection

Posted on Jun 05, 2009

  • toni_oh Jul 06, 2011

    I found a bad ground incorrectly wrired radio and cig lighter. removed radio were is it fried? still wont turn over. Couild starter be fried from bad ground?

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SOURCE: no power to fuel pump or fuel pump wiring harness...

need to check for power to fuel pump relay and wiring to pump

Posted on May 27, 2009

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