Question about Ford Expedition

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My car just cranks, the fuel pump was not running, so i checked the fuse it was blown. so i bet on the bottom of tank then replaced fuse, turn key on still no pump running, so checked fuse blown again, did this one more time replaced fuse turned key on this time fuse did not blow but still fuel pump not running, replaced fuel pump and filter and checked fuel shut off switch turn key and car just cranks, fuse is not blown??

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  • scott_richte Jul 26, 2009

    the last tech did not speak to the fact that the pump is not running.

  • scott_richte Jul 26, 2009

    where is the fuel pump relay located?

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It should be at #5 of the power distribution box located under the dash on the passenger side near the AC dryer. You may also want to check the wires and ports while at it for any short circuit which may have caused your fuse to go out.

Posted on Jul 26, 2009

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Check the fuse for the fuel pump relay.

If that doesn't do it, pull the relay and test it. Apply 12V to the two small terminals and listen for a click. If this works, check to see if you have continunity across the two large terminals. If you do, then this isn't the problem. Be sure to also check tha the large terminals are open when you remove the 12V from the small terminals.

If that doesn't do it, you have a wiring problem and will have to troubleshoot that.

Posted on Jul 26, 2009

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Check this following criterions:

1. It could be the Fuel Pressure Regulator.
2. It is probably the fuel filter or spark plugs. egr valve is a player in this as well.
3. It could be a bad seal between the pump and the tank. but It is probably a house or hose clamp that is bad.

4. Lastly, Might be the injectors.

Ask a Technician to do this for you

Posted on Jul 26, 2009

  • redhaze89
    redhaze89 Jul 26, 2009

    Did the tech check the fuel pressure using SST, connect terminals +B and FP of the data link connector 1?

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