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Elite Member
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Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
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Elite Member
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
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Well, assuming your reporting is accurate, the only explanation is two separate fails. Firt one I would tackle is why ADD won't engage with vacuum on either side.
When in doubt, RTFM:
First, make sure your vac lines are both intact all the way from the VSVs to the actuator on the front diff. If they are, you are going to have to get back under there and pull the actuator. This section shows how to test it. See item 3.
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'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
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