Question about 2008 Ford F 250 Super Duty 4WD
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Posted on Jan 02, 2017
SOURCE: four wheel drive
The transfer case has a motor mounted on the exterior of the transfer case,and they do go bad.There is also a transfer case controller (computer) that is part of the Body Control Module (BCM) and i have seen where a malfunctioning "door" open or closed sensor would cause the transfer case controller to inhibit,or,not allow 4WD engagement.Long story short is,scan the vehicle computers for trouble codes,including the BCM,and repair any codes present.If codes are repaired and still no 4WD,test the electric motor that is mounted on the transfer case.When all external controls are operational and tested as operational,the last conclusion would be an internal transfer case malfunction,but as a last resort.This is why it is important to verify and/or repair all external controls,inputs,and commands.The particular transfer case in your Ford has an aluminum case half that is prone to wear,and i shim out the excessive end play as part of the rebuild,so overhauling it in your garage does require more than meets the eye.Good luck.
Posted on Sep 27, 2008
HI! I have the same truck and to get it into four wheel drive shift to neutral first, apply the foot brake, move selector knob to fourwheel drive and then try to proceed. I hope this helps, John
Posted on Dec 11, 2008
it is usually the sensor or the control button itself on the dash if you have an owners manual check in there for a fuse or a relay if no manual look under the dash on drivers side for the fuse box and under the hood for the relay box
Posted on Jan 05, 2009
I have a 1994 ford f150, my 4 wheel drive keeps trying to engage by itself even without me touching the automatic hub button....at time you can even hear it engaging and disengaging by itself, the low range light even comes on (dimly)...what could be the cause? the transfer case motor looks good and so does the wiring.
Posted on Nov 24, 2009
mounted to the tranfer case you will see what looks like a window motor. Round with wires coming out. This is the actuator motor for the four wheel drive. A lot of times if they are not used the brushes will stick in the motor and if they do the four wheel drive will not engage. Sometime you can tap on the motor and it will work. You also will have a fuse for the four wheel drive in your fuse panel. Good luck, hope this helped
Posted on Feb 07, 2010
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