How can you Tell if your 4x4's Four Wheel Drive is working

Discussion in '4x4 / Truck Forum' started by wing seeker, Feb 12, 2014.

  1. wing seeker

    wing seeker Senior Refuge Member

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    I know this sounds strange but I cannot tell if my 2007 Ford F-150's
    4x4 is working or not once I switch it on. Anyone have ANY insight into
    this?
     
  2. likesbigspreads

    likesbigspreads Elite Refuge Member

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    Turn it on, drive on dry pavement and try to turn . It should jump a little as it turns.
     
  3. wing seeker

    wing seeker Senior Refuge Member

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    what would cause the 4x4 function to suddenly or over time stop
    working? also, is it a tough fix if it is not working?

    I don't see any lights that indicate the vehicle is in 4x4 capacity
    when I turn the knob
     
  4. dukhnter8

    dukhnter8 Senior Refuge Member

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    Could be alot of things wrong. First check the fuses, I've had them blow and no 4x4 until you change the fuse. Could be a switch or bad wire, or actuator. Try the easy and cheap stuff first.
     
  5. Tuleman

    Tuleman Elite Refuge Member

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    Put the truck on jackstands.
    Start engine.
    Put in Drive.
    Engage 4WD switch.
    Look at front wheels.
    Report what you see.
    We'll tell you if it's working or not.
     
  6. JHerr

    JHerr Elite Refuge Member

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    Lock it in and find some wet grass, but not too muddy in case it's not working.
     
  7. cutdownolt12

    cutdownolt12 Senior Refuge Member

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    I had an 08 that did the same thing. I tried to put it in 4wd in a mud hole but nothing happened. Turns out the lockers are controlled by a vacuum system and if mud or water gets sucked in your 4wd will go out. major design flaw I think but that could very well be why its not working.
     
  8. tcc

    tcc Elite Refuge Member

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    As someone said engage it on dry pavement then turn sharply. If it's engaged you'll know it.
    Lot's of stuff to screw up on the push button crap.
     
  9. BAYDOG

    BAYDOG Moderator- Diver, NY Forum, Refuge Classifieds Sponsor Moderator Flyway Manager

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    Vacuum operated locking hubs. Not a hard fix, check You Tube.
     
  10. fowlwhacker

    fowlwhacker Elite Refuge Member

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    Do you have hubs that can lock manually? If so try to lock them manually and see if you feel a difference when the truck is locked in manually in 4x4 versus the auto switch inside of the truck. My 03 excursion had an issue with not locking but I could lock them manually but it was very difficult. They auto locking hubs are prone to go up often on fords and the vacum is also known to have issues. When I had both of my hubs replaced I still didn't have 4x4. It ended up being a simple 4x4 sender switch on the drivers side wheel well that ended up being bad.
     

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