another 4wd problem....not engauging ..stuck - Ford Powerstroke Diesel Forum
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post #1 of 33 Old 12-23-2009, 03:00 PM Thread Starter
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another 4wd problem....not engauging ..stuck

Stuck in snow...4wheel drive not working...m/t baja mtz's didnt help..
4 hi and low lights come on in dash..
hubs turn into lock freely..
but they are deffintly not engauging..only back wheels spinning..it was in 2 ft of snow and friends with other psd's were motoring right thru it..micky t's were just packing with snow..
dug it out and its still not working..it was working a month ago and i dont know if it could have effected it but i drove thru a flooded 2-3ft of salt water since...
anything i shuld try first?
fuse or relays?
Best way to check hubs, driveshaft, or transfer case?
Thanks, im a 4x4 noob

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post #2 of 33 Old 12-23-2009, 03:11 PM
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Sounds like you may have water in the hubs that froze and is preventing a lock. If it is water it will ultimately ruin the bearings.

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post #3 of 33 Old 12-24-2009, 09:45 AM
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sometimes vac operated locking hubs just stick. Some years (not sure if all ) also had manual hubs. If the automatic doesn't work, just turn the center lock mechanism and you have 4wd. My 01 has it. A local 4wd shop said he had never heard of that. I had to prove it to him.
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post #4 of 33 Old 12-24-2009, 10:07 AM Thread Starter
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They are manual lock hubs, no auto switch..
Switch says 2wd 4hi and 4low..

When it is in 2 wheel the front driveshaft spins free..
When i put it in 4x4 and lock the hubs, the driveshaft is locked..

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post #5 of 33 Old 12-24-2009, 10:25 AM
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do you mean the auto lock factory hubs have been replaced??
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post #6 of 33 Old 12-24-2009, 10:42 AM
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ive never heard of auto locks either if you have the manual locks. Didnt think you could have both at the same time. why would you need that. I just figured when you lock your hubs then its like pushing another diff until you put the tcase into 4hi or lo. Am I wrong on that

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post #7 of 33 Old 12-24-2009, 10:53 AM Thread Starter
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sorry for confusion...factory manual lock hubs

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post #8 of 33 Old 12-24-2009, 11:06 AM
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if your truck has a switch on the dash then you have autohubs BUT they only work when going to 4hi i believe. the auto hubs can also be used manualy though.


it sounds like to me that you have a broken hub

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post #9 of 33 Old 12-24-2009, 11:13 AM
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huh interesting have to look at the cd and see how all that works but I dont have it on my truck anyway. Never been a fan of them. When you need them they dont work. LOL

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post #10 of 33 Old 12-24-2009, 11:59 AM
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"when you need them, they don't work" .. Beenuseing mine for 5 years .

When you select 4wd hi or low, the t case motor engages the tcase to the frnt driveshaft and the auto hubs engage. You can manually engage the hubs but if the t case motor does not engage the t case then you still don't have 4wd. They both have to work.
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