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1998 4X4 problem

Discussion in 'Transmission & Drive train' started by Shadow-D, Sep 26, 2010.

  1. Shadow-D

    Shadow-D Member

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    I searched to forum and didn't find an answer for this.

    1998 Expedition 4.6 V8 auto trans electronic / vacuum 4X4

    My 4 wheel drive stopped working a couple of years ago and I just haven't gotten around to fixing it. I have located the problem, the front axle won't lock. I was told once by a mechanic that the vac valve on the front axle was bad and it was a $50 part. I decided I could do the work myself but, again, I just haven't had the time to look into it.

    Fast forward to today.
    I made the time to check everything with my wife and found that the vac valve IS working but it isn't locked on the pin that comes out of the diff.
    Is there supposed to be some sort of locking mechanism / clip on the valve that holds it to the pin or do I need to replace the valve?

    Thanks
    D
     
    Last edited: Sep 26, 2010
  2. Shadow-D

    Shadow-D Member

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    Any ideas?
     
  3. Shadow-D

    Shadow-D Member

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    Still looking for an answer :(
     
  4. Shadow-D

    Shadow-D Member

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    Snow is coming soon and I would like to have 4WD this year...
    Please help...
     
  5. ZentineZ

    ZentineZ Active Member

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    Take it to a MECH? shouldnt be to much since you know what wrong.
     
  6. Shadow-D

    Shadow-D Member

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    Pin = the shaft that engages the front axle. Valve is not connected and there isn't any way to lock it on it.
    I don't have the money to take it to a mechanic. IF I did we wouldn't be having this discussion now would we :rolleyes:
     
  7. nvycrmn

    nvycrmn Full Access Members

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    can you take a pic of what you are talking about? i can take a look under mine and see what we got goin on.
     
  8. panda24619

    panda24619 Full Access Members

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    yeah post a pic and ill look too.
     
  9. KWT2000

    KWT2000 Full Access Members

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    im lost here... the valve is working, as you say then what is the problem... is the valve no hooked to the shaft that locks the passenger side axel to the diff??? really need a picture here... or is the valve not staying engaged?? if so there is a vacum leak and the valve more than likly is bad
     
  10. Shadow-D

    Shadow-D Member

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    That is exactly what is going on. I will try to get a pic or two today.
    Thanks
     

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