Question about 1996 Ford Explorer

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Fuel pump wont kick in - 1996 Ford Explorer

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  • Anonymous Aug 20, 2008

    engine not getting fuel

  • FaithUndone Aug 22, 2008

    Engine sounds great, but first time, made a quick stop at post office, then the truck wouldn't start back up for about 20 minutes, then started fine. Went to my daughter's school today, truck wouldn't start when I tried to leave the school. Classmate's dad said he couldn't hear the fuel pump kick in, but Auto Zone said that you can't hear it if the tank is half full or more ( which it is). Was told it could be relay, fuse, fuel pump, or possibly the fuel filter. I am female by the way, and did my own tune up last summer. But this is just too much for me to figure out. Any advice? How much should a fuel pump cost to replace? Thanks. :)

  • Anonymous Nov 15, 2008



    I could use some help diagnosing a possible fuel pump
    failure on my 1995 Ford Explorer with 140K miles.


     


    Fuel pump doesn’t run. Ran fine on Columbus Day, but next
    day the fuel pump failed to pressurize (run) when I turned on ignition before
    cranking. I suspect an electrical problem (rather than pump failure) but
    haven’t yet been able to confirm that the pump is operable.


     


    -  Fuse, Relay,
    and Inertial Cut-off Switch seem to be OK (relay “picks” when energized), but
    voltage measured at connector on input to Inertial Cut-off seemed low (9.5v).
    Not sure if I just had a crummy ground contact during measurement.


     


    -  So then I
    tried jumping 12v to connector on output side of Inertial Cut-off, but got no
    response from pump.


     


    -  When I looked
    at the resistance between the downstream connector feeding the pump and ground
    I measured 4,000 ohms, so presumably the motor windings aren’t open. Any idea
    what typical resistance should be?


      



    Seems odd to me that the pump itself would fail overnight,
    but who knows, the temperature was a bit cooler. What am I missing or doing
    wrong? Any suggestions for other tests or improvements to my technique?








  • tebot
    tebot Mar 29, 2009

    I had the same problem, except every time it happened and I took it to the dealer it worked fine. It was when it wouldn't start and had it towed in that they found a short in the fuel pump wiring.

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  • 60 Answers

Have you checked the relay?

Posted on Jul 22, 2008

  • Tyler Aug 29, 2008

    Faith- I would start by checking the relay and/or fuse for corroded connections/contacts.
    I wouldn't say that either are blown, otherwise it shouldn't start up at
    all. The locations of those should be listed in the owners manual.
    You can check the fuel filter, but depending on the truck, you may need
    special tools to do so. Next up, I would check the fuel pump
    connections, though this will be kind of hard to do. I have seen
    loose/dirty connections that have caused intermittent problems like you
    are describing. I wouldn't say the fuel pump is bad otherwise it shouldn't start. I would guess either a bad fuse/relay contact or
    loose/corroded/dirty fuel pump connections.

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  • 65 Answers

The is a box under the hood and there are plugs in it the plug in the front is a 3 prong plug take it and replace it, it is like $7.00 or so it is just the plug that works like a battery for the pump. replace it and you will be fine I had the same problem and i fixed it and have had no problems after.
nikki2913

Posted on Jan 05, 2009

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