I have a 2001 F250 Super Duty. Auto locking hubs won't engage so I tried switching manually into 4 wheel and it still doesn't work. I had my front u joints replaced at a local shop and a month later when I tried my 4 wheel it didn't work. I went back and they said it wasn't because of them. Any Ideas
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The power to the switch seems to be the issue. The vacumm switch is
just a normally closed switch,meaning only when it gets power, will it
send vacumm to the hubs to allow the 4wd to work automatically. You will have to trace the electric back from the switch,to see where it goes,
a relay or fuse. You may just have bad relay contacts. Good luck.
You can always run a toggle switch into the cab,to get the system
working until you figure out what's wrong in the mean time. Just a thought. Good luck.
im not sure if a 2000 f150 and a 2000 f250 have the exact steering column,but incase it is then check at the base of the column inside and you may see a triangler shape bracket that the shift cable connects to,there will be 2 torque screws holding the bracket to the column,either a t-20 or t-25 not sure,they may be loose so the shifter will be sloppy...my 2000 f150 had that problem and i stumbled upon it,it seems to be a 2000 year issue...about the manual hubs,try locking them in and drive forward and reverse very slow a few times,if they lock in then they are sticky and it takes time for the spring inside to push then together.lock the hubs in first,then after a while shift to 4x4,because if they are just sticky,it may strip the teeth on the lockouts from the axel turning against the inside of the lockout.
I have the same hubs on my truck as what you have. I have been told it can be done you just have to know if you have a dana 50 or 60 front axle. The warn hubs i'm sure are a better quality hub but if your worried about the auto feature of your current hubs. That is vacuum accuated when you 4 wheel drive is engaged. And there fore vacuum engaged. Mine used to work great but after a lot of mudding sand got into seals and vacuum didn't work anymore so i treat them as free/lock hubs.
I have recently had this problem with a customer. It seems the 4x4 low will only engage in neutral with the brake applied. And also check fuse. Then select drive and you will feel it lock in. Don't "goose" the fuel when attempting this.
i have 2006 f250 4x4 will not engage unless i lock in hubs. once hubs locked in i can engage 4x4 by using electronic selector. why will it not engage when hubs are in auto and electronic selector is on 4high