4x4 question...
Thread Starter
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Junior User
Joined: May 2013
Posts: 88
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From: NorCal
4x4 question...
I may be be asking this in the wrong section, so forgive me if I am. I am curious to know why I have locking hubs on my 4x4 f250 since I believe it is shift on the fly. I was cleaning my rims today and noticed they are in the "locked" position. Should they be in the locked position or the "auto" position?
It is a 2009 f250 4x4 that is new to me and I just want to make sure its in the correct position. Any help would be greatly appreciated.
Thanks
It is a 2009 f250 4x4 that is new to me and I just want to make sure its in the correct position. Any help would be greatly appreciated.
Thanks
Freshman User
Joined: Apr 2009
Posts: 38
Likes: 0
They should be left in Auto, which allows them to free-wheel when not engaged. If you have them "locked" then you are turning your front differential and driveshaft, creating unnecessary wear and fuel consumption. Auto lock will engage your front hubs whenever engaged. The "lock" feature on your hubs is a mechanical back up if the vacuum autolock isn't working...... I think ;-)
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Junior User
Joined: May 2013
Posts: 88
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From: NorCal
They should be left in Auto, which allows them to free-wheel when not engaged. If you have them "locked" then you are turning your front differential and driveshaft, creating unnecessary wear and fuel consumption. Auto lock will engage your front hubs whenever engaged. The "lock" feature on your hubs is a mechanical back up if the vacuum autolock isn't working...... I think ;-)
Posting Guru
Joined: Sep 2010
Posts: 2,213
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From: The Woodlands, TX
The shift on the fly feature requires one full rotation of the front wheels before 4x4 is fully engaged. So if you get buried before using the electric switch in the cab, time to get dirty and manually lock them.
Freshman User
Joined: Apr 2009
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Your fuel mileage should go up, but don't get too excited. If you see a 3% increase in fuel economy, you'll be doing good.
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Junior User
Joined: May 2013
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From: NorCal
Thanks again for all the info. This forum is a lifesaver for me.
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Junior User
Joined: May 2013
Posts: 88
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From: NorCal
Thank you...3% is better than nothing.
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Freshman User
Joined: Apr 2009
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Thank you for the information. I recently purchased this truck (about a week ago) and was cleaning it today when I noticed the hubs were in the locked position. Apparently, it has been that way since I bought it. I'm really hoping that my gas mileage will improve? Do any of you guys think it hurt anything to drive it with the hubs in the locked position?
Thanks again for all the info. This forum is a lifesaver for me.
Thanks again for all the info. This forum is a lifesaver for me.
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Thread Starter
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Junior User
Joined: May 2013
Posts: 88
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From: NorCal
Thanks for the info, I'll remember to do that.
Elder User
Joined: Aug 2008
Posts: 821
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From: 50450 IOWA
my question, why was both hubs locked in the first place. i would be willing to be the vacuum part of the auto locking hubs has and issue and rather than fixing the problem they just locked the hubs so the 4 wheel drive would work. you may want to test to see if the auto lock works for future reference. congrats on he good lookin truck
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Junior User
Joined: May 2013
Posts: 88
Likes: 0
From: NorCal
my question, why was both hubs locked in the first place. i would be willing to be the vacuum part of the auto locking hubs has and issue and rather than fixing the problem they just locked the hubs so the 4 wheel drive would work. you may want to test to see if the auto lock works for future reference. congrats on he good lookin truck
Thanks again.
Dave
Senior User
Joined: Jan 2006
Posts: 279
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Put the hubs in auto, turn the dash switch to 4x4. Drive ahead a few feet. Turn the wheel to full lock. If everything engaged, the truck will hop around a bit if your on solid ground. Then you know everything is working. To try 4low, stop, put truck in neutral, push the brake and switch to 4low. Should go in.
Thread Starter
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Junior User
Joined: May 2013
Posts: 88
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From: NorCal
Put the hubs in auto, turn the dash switch to 4x4. Drive ahead a few feet. Turn the wheel to full lock. If everything engaged, the truck will hop around a bit if your on solid ground. Then you know everything is working. To try 4low, stop, put truck in neutral, push the brake and switch to 4low. Should go in.
Thank you everyone.
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