Question about 2003 Ford F150 Regular Cab

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2003 4.6 f150 wont start replaced fuel pump, filter engine cranks computer reads all systems fine

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  • Ford Master
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When you turn on the key to Run, do you hear anything? There is an Inertia cutoff switch which kills the power to the fuel pump. This switch is usually behind the front kick panels and has a reset button that you push. It is a safety switch and can sometimes trip if a doorslam or impact is felt by the sensor.

There can be a Fuel pump relay in the black powerboxes, but there is no Code, so it should be okay. If you have a gauge to measure fuel pump pressure, check to see if the fuel pump is working by measuring pressure at the fuel rail.

Posted on Nov 06, 2010

  • mickeyl281 Nov 23, 2010

    They did smell fuel after cranking,

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Posted on Jan 02, 2017

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