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no 4x4 lock up on my 03 tacoma

Discussion in 'Technical Chat' started by SAM1944, Aug 8, 2011.

  1. SAM1944

    SAM1944 [OP] New Member

    Joined:
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    evergreen co
    Vehicle:
    2003 tacoma 4x4
    none
    my 03 tacoma will not shift the front differental to lock it into 4x4-any clues?
     
  2. G scott04

    G scott04 ...

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    Garrett
    Mesa
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    04 PreRunner
    Is it the t case not engaging or your ADD?
     
  3. SAM1944

    SAM1944 [OP] New Member

    Joined:
    Aug 8, 2011
    Member:
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    Gender:
    Male
    evergreen co
    Vehicle:
    2003 tacoma 4x4
    none
    ;i can't get my tacoma to shift the front differental into 4x4
     
  4. SAM1944

    SAM1944 [OP] New Member

    Joined:
    Aug 8, 2011
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    Male
    evergreen co
    Vehicle:
    2003 tacoma 4x4
    none
    why won't my 03 tacoma go into 4x4?
     
  5. Highland Logan

    Highland Logan UBIQUE

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    Frank
    Nova Scotia, Canada
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    2011 Black AC TRD Off Road w/ factory tow pkg
    Check your other post someone needs more information. Don't be impatient and double post when you don't get a immediate response, and welcome to TW.

    Frank
     
  6. chopper

    chopper ky taco

    Joined:
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    chop
    stanton,kentucky
    Vehicle:
    05 taco reg cab 4x4
    dura tracs, debadged, weathertech floormats, removed mudflaps,black paint wheels,k&n air intake.
    man i have the same issues with my 05 u can check out 4x4 switch thread or big problem thread and it may help you i dont know.
     
  7. 98tacoma27

    98tacoma27 :POOPCORN: Staff Member

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    Beech Creek
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    05 Tundra SR5, 88 SR5 PU, 98 TRD OR (CRUSHED)
    5100's all on fours
    Did you check your vacuum line? The actuator? The fuses?
     
  8. G scott04

    G scott04 ...

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    Mesa
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    Have a nice Day.


    This^^
     
  9. David K

    David K Well-Known Member

    Joined:
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    San Marcos, Alta California
    Vehicle:
    2010 4WD Off Road DC
    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Kragen HID, 1 Cibie Halogen.
    The Tacoma uses an ADD (Automatic Disconnecting Differential)... which is a newer form of 'automatic locking hubs' that allows you to shift on-the-fly into H4 and not need to manually lock the front hubs (hubs permit less wear on the front driveline when you are only using 2WD).

    The ADD is activated by a vacuum line every time you go into 4WD. That vacuum line may fail. Not common, but happens.
     
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