4x4 not engaging t case
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From: lakeland, Tn
4x4 not engaging t case
Have a 02 f250 CC in my shop right now that I’m working on for a guy. 4x4 not working is one of the many problems I’m addressing. Both high and low range lights come on when switching to run position when turning the key on so the lights work. Checked the 30 amp fuse under the hood and I believe fuse 28? Under the dash and all is good there also. Swapped both the relays under the hood with 2 out of my 99 that I know are good and I don’t get any click on those when I turn the switch. Also swapped the switch out of another working truck with no change and last I took the TC motor off and plugged it into my personal truck and it works and functions as it should and make my 4x4 lights function on my dash. So where do I go from here? Is it the body module? Need some direction here. I hate ESOF what’s wrong with pulling a lever. Thanks
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From: lakeland, Tn
No other electrical issues, everything else is mechanical that I’ve repaired(glow plugs, pinion seal, radiator, etc). Plugs were clean under the truck and were fastened tightly together when I took the motor off the transfer case.,
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From: Lake Hartwell, GA
Remove the shift motor from the transfer case and have someone switch from 2HI - 4HI - 4LO and see if the shift motor moves. If it does not, you are getting closer.
If it does move, see if you can manually shift the transfer case. If you cannot, you are getting closer.
If it does move, start looking toward the hubs, vacuum pump and system. Do the hubs, axles lock up or do they free spin all the time?
Another thing to consider, sometimes 4HI will not engage unless the truck is moved forward or reverse a bit.
If it does move, see if you can manually shift the transfer case. If you cannot, you are getting closer.
If it does move, start looking toward the hubs, vacuum pump and system. Do the hubs, axles lock up or do they free spin all the time?
Another thing to consider, sometimes 4HI will not engage unless the truck is moved forward or reverse a bit.
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Senior User
Joined: Sep 2008
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From: lakeland, Tn
Remove the shift motor from the transfer case and have someone switch from 2HI - 4HI - 4LO and see if the shift motor moves. If it does not, you are getting closer.
If it does move, see if you can manually shift the transfer case. If you cannot, you are getting closer.
If it does move, start looking toward the hubs, vacuum pump and system. Do the hubs, axles lock up or do they free spin all the time?
Another thing to consider, sometimes 4HI will not engage unless the truck is moved forward or reverse a bit.
If it does move, see if you can manually shift the transfer case. If you cannot, you are getting closer.
If it does move, start looking toward the hubs, vacuum pump and system. Do the hubs, axles lock up or do they free spin all the time?
Another thing to consider, sometimes 4HI will not engage unless the truck is moved forward or reverse a bit.
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Joined: May 2014
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From: Lake Hartwell, GA
Any comments on anything else I mentioned other than the T case operating?
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From: lakeland, Tn
I realize the motor works and operates as designed on another truck, but there is no mention if the motor works on the problem truck. I was simply trying to help you isolate the problem area, or at least point you in the right direction.
Any comments on anything else I mentioned other than the T case operating?
Any comments on anything else I mentioned other than the T case operating?
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From: lakeland, Tn
I didn’t use electric grease to hold it together. I fixed the pin then a dab of the grease to prevent rust, corrosion, water intrusion.
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