4WD system gone squirrely

Lincoln Navigator / Lincoln Aviator

  1. heyjewel

    heyjewel Active LVC Member

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    Today my near perfect 2004 Navigator 4X4 w/143,000 miles started acting up. When I put it in 4 Low and shifted to 2nd (I do this everyday to make descending my steep dirt and rock driveway easier) Nav said it was in 4 Low but it seemed to be in 4High. Raced down the hill. Stopped to take it out of $WD and it seemed to come only halfway out. Front seemed to transfer out but not rear. Took it out on road and it sounded like it was in 4Low yet it was able to move faster than that would have allowed. And speedo said I was doing 80 when I know I wasn't over 25mph. Right now it is stuck in this mode. Tried several times to get it back into normal 2WD but only thing happens is indicator light goes out.

    Any ideas for this?
     
  2. 04_Sport_LS

    04_Sport_LS Dedicated LVC Member

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    Possibly a bad electrical "position" sensor in the 4wd,,, but more than likely the glorified power window motor for the "touch drive" 4x4, (if your NAV has that), is starting to take a vaction
     
  3. heyjewel

    heyjewel Active LVC Member

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    Mine has the 4 position switch: 2wd, awd, 4high, 4low. Must stop, shift to neutral, step on brake and then turn the switch to 4Low. All other positions are on the fly. All electronics seem to indicate shift to 4Low worked as designed: 4Low light comes on, compressor begins raising the vehicle and I can hear the transfer case motor run but whatever performs the mechanical shift does not work. I think I'm going to pull transfer case motor and see what I can find. Possible some linkage has come loose or broken? Or like you say maybe the motor has waved bye bye. Wish it had not left me in 4Low as it's parting gift.
    Thanks for input
     
  4. 04_Sport_LS

    04_Sport_LS Dedicated LVC Member

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    There is probably a gear on that motor,,, that rotates another part to do the actual shifting from high to low. Just a guess,,, but maybe a roll pin sheared... allowing the motor to freewheel without turning the gear.
     

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