Question about 2006 Ford F-150
Well first the 4HI worked then stopped, now only the 4LO works. What should I do?
Sounds like little motor that engages the 4x4 on the transfer case gave up the ghost replace and it should be fine.
Posted on Feb 17, 2009
Most common problem is the vacuum diaphragm that is so inconviently mounted UNDER the battery tray.The cable that locks in the front diff is attached to it and vacuum pulls it in/out.
Posted on Dec 23, 2008
SOURCE: 4wd 4HI and 4LO not working
Check the fuse to the 4x4, if the fuse is good then check the 4x4 electric motor actuator on the transfer case. You should hear it work from 2wd, 4hi to 4low and back to 2wd with the push of the switch. if you don't hear it working then check the wire harness at the actuator motor, look for any damages like corrosion or cracked wire connector clips. If the 4x4 actuator is working on the transfer case, then the front hub 4x4 actuator may have gone bad and that's located on the front differential. It's common for the clip there to corrode and break and is an easy fix with a new collar pin, at worst it's the diaphragm on the vacuum actuator that is located under the battery tray. There is a vacuum switch on the top of the transfer case, driver side but when that fails, your front hub stay's locked in the on position. Good luck and keep me posted and hope it's a simple fuse that has gone bad. You can pick up all these parts at Auto Zone or Parts Source and they will have the step by step instructions for you to get the job done with common tools.
Posted on Jan 06, 2010
Testimonial: "Thanks a bunch, I will check this out and get back"
SOURCE: 04 Z71 4wd problems
can you hear the shifter motor trying 2 shift? if not its the shifter motor open the door and try 2 listen when your trying 2 shift it
Posted on Feb 13, 2010
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Posted on Jan 02, 2017
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