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1998 Ford F-150 4-wheel drive won't engage

I have an electronic engaged four wheel drive on my truck and it was working fine and then recently when i kick it in it says on the dash that it's kicked in, but it's not actually kicking in on the truck itself. It stays in 2 wheel drive all the time.

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  • jthaxton Apr 03, 2009

    1996 f150 four wheel drive light on dash says its in four wheel drive but have no power on actuator on the transfer case

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Lock it in and jack up and see which part isnt locked
transfer, front end
front end uses vacuum actuater
and transfer uses a electric motor
front driveshaft shouldnt turn when in park and front wheels off the ground
front wheels shouldnt turn with one wheel up

Posted on Feb 06, 2009

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It sounds as if you have a vacuum solenoid problem.
The 4x4/4x2 vacuum solenoids are attached to the upper RH side of the engine compartment, and alternately route vacuum to the vacuum motor which engages/disengages the center axle disconnect collar in the front axle assembly.They are grounded when activated, open circuit when deactivated.I would first of all make sure that you have power to them on the W/LB wire with ignition in run postion.If not then check fuse 23 (10amp) in the interior fuse panel.Disconnect the solenoids and measure their resitance should be between 50-100 ohms.
http://i253.photobucket.com/albums/hh43/chuck943/C11544B.gif

Posted on Feb 06, 2009

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2003 f150 4wheel drive light on but not locked in ffront wheels off gound drive shaft not turning and wheel do not turn

Posted on Jan 16, 2010

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SOURCE: 1998 Ford F-150 4-wheel drive won't engage

sounds like the hubs arent locking. try that or there is a modual under your drivers seat or in drivers kick panel could be coulprit

Posted on Feb 17, 2009

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