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Old 06-11-2013, 07:37 PM
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4x4 issue

Ok guys I need to understand this I have a 2006 F250 with the 6.0 Powerstroke. I was out in some sand today and come to a stop on a small upslope I go to move and my tires just spin and spin. This, of course, is embarrassing, so I try again and I cant get out, so I put my little switch to 4wd and try reverse and drive and still the same thing. At this point, I'm freaking out thinking something is wrong with my 4-wheel drive. I finally get out and check my hubs and they are in auto which in my mind means when you engage the switch in the cab you should be in 4wd... so out of curiosity I turn them to lock then try to move it again and the truck pulls forward with no problem.... so my question lol is when I put it in 4wd with hubs in auto does it lock in or is it like an older truck where you have to lock your hubs manually????
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Old 06-11-2013, 07:48 PM
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Auto is like 3 wheel peel. If u need true four wheel, for say off roading, put them in lock. Auto works great for generally everything else

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Old 06-11-2013, 07:51 PM
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yes selecting 4 low or high should have engaged the ESOF hubs

you likley have a bad line or hub seal
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Old 06-11-2013, 07:53 PM
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Is it a true 4 wheel lock?


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Old 06-12-2013, 04:50 AM
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In Auto? Most likely no. There's a vacuum solenoid that sends a pulse to a thrust washer behind your locking hubs which engage when you use your ESOF. But say you have a bad knuckle seal, or bad washer, or just your locker is hanging up a bit. It will not lock in that wheel. Anytime I needed my 4x4 I just got out of the truck and turned it to lock. And when those plastic POS broke on me, I switched over to Warn on my 04'. Haven't had a problem since..Just have to remember to engage your hubs before you turn ESOF, otherwise I can imagine some issues. I don't want to find out though
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Old 06-12-2013, 05:49 AM
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couple of things

the 06 in question has no other locking Hub option without ripping out and replacing a thousand $ worth of parts .

The factory Hub is indeed a WARN brand .

and they are not very hard to keep in working order IMHO


0n the 04 you swapped hubs on if you engaged 4low or 4 high
the side effects of not engaging the manual hubs to "lock" would be


instead of 4 low u would have 2low this can be very useful

and 4 high would be useless because your transfer case and front drive shaft / axle shafts would spin but not the wheels


no real harm just accelerated wear and less MPG

same if your in 2high but forget to set the manual hubs to free just some parts turning that don't need to be however some guys leave the hubs engaged all winter so they don't need to get out of the truck

as long as your at a full stop you can engage those manual hubs with the selector already set to 4x4 with no harm at all
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Old 06-12-2013, 05:58 AM
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Quote:
Originally Posted by fr9090 View Post
Auto is like 3 wheel peel. If u need true four wheel, for say off roading, put them in lock. Auto works great for generally everything else
Auto ( when commanded to lock) and lock are the exact same function/operation/performance
in a properly operating Electronic shift on the fly " ESOF" and Pulse vacuum Hub "PVH " system

lock is just a manual override if something fails to lock the hub automatically
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Old 06-12-2013, 06:00 AM
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great to know Zmann. I guess I just didn't want to be a guinea pig, but I should've known somebody has done it before or knew the consequences.

As far as the 06+ trucks..I should've got one of those instead of an 04. Seems all of the parts are better. I just had plastic motorcraft hubs on my truck..which worked fine for years. One day I went out to lock it into manual to get off some ice, and the cab broke up with a black o-ring and a coil spring. I muttered to myself, threw it in the backseat, then gunned the truck sideways to get off the ice. Next day I bought the Warn setup with small modification to the locking ring, fits real nice. Works even better. And matches my chrome. Overall, I'm very satisfied.
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Old 06-12-2013, 06:01 AM
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Quote:
Originally Posted by darren808 View Post
Is it a true 4 wheel lock?

??

it's like most trucks out there
limited slip rear and open front dif so they do ok

but lockers front and rear would do best
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Old 06-12-2013, 07:29 AM
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Oh ok. How do I now if I got LSD in the rear?


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