Good Sam Club Open Roads Forum: Newbie question about 3.73 locking rear axle on F250 4x2
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 > Newbie question about 3.73 locking rear axle on F250 4x2

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Nighduckman

Virginia

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Posted: 10/01/19 08:39am Link  |  Quote  |  Print  |  Notify Moderator

In response to a previous post, some helpful people on the forum asked if my 2wd 2019 F250 came with an electronic locking 3.73, rear axle. It does. But being very new to this, am I right that this will mainly help if I am on some rougher road conditions where I realize I risk getting stuck? I realize it is nowhere near as good as 4x4 but I assume it is good to have in a RWD only setup? Anyone with a RWD have any experience using it?

Also, the dealer who sold me the truck, an old 2WD pickup guy, told me to turn off traction control when engaging the locking rear axle and to stay at lower speeds with the axle locked until I am on better terrain. Dues this sound right? Obviously, newbie questions but I am trying to learn. Thanks in advance!

* This post was edited 10/01/19 08:54am by Nighduckman *

theoldwizard1

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Posted: 10/01/19 09:15am Link  |  Quote  |  Print  |  Notify Moderator

read your owners manual, page 221

The electronic locking differential can provide additional traction should your vehicle become stuck. You can activate the differential electronically and shift it on the fly within the differential operating speed range. The differential is for use in ice, snow, mud, rocks, sand, or any off-road condition where you need maximum traction. It is not for use on dry pavement.

• In 4x2 or 4x4 High modes (any gear on 2WD), the electronic locking differential will automatically disengage at speeds above 25 mph (41 km/h) and will automatically reengage at speeds below 20 mph (32 km/h).

• The AdvanceTrac system has the ability to take over control of the electronic locking differential and disable it during driving maneuvers when necessary.

time2roll

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Posted: 10/01/19 09:29am Link  |  Quote  |  Print  |  Notify Moderator

I would also recommend not for any pavement wet or dry unless you experience loss of traction.


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4x4ord

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Posted: 10/01/19 09:32am Link  |  Quote  |  Print  |  Notify Moderator

Just to play I often engage my electronic locking diff after backing out of my garage in the snow if the truck slips trying to pull forward. I don't think it has ever offered enough additional traction to get me going. I need to engage the 4wd. I guess when one rear tire is on better ground than the other it can potentially make the difference but don't expect much.


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WNYBob

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Posted: 10/01/19 09:52am Link  |  Quote  |  Print  |  Notify Moderator

I have it on my 2011 Silverado 1500 LS 4x2 and don't even notice it. I leave it on all the time. I have that turns it off,but don't use it.

camperdave

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Posted: 10/01/19 09:55am Link  |  Quote  |  Print  |  Notify Moderator

Well, I can tell you from some experience if you're on a slick slightly cambered road and one rear wheel is spinning, all locking the rear diff will do is spin both wheels and put you in a ditch! [emoticon]

unless they have electronic overrides for stability control stuff nowadays.


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Grit dog

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Posted: 10/01/19 10:38am Link  |  Quote  |  Print  |  Notify Moderator

"The electronic locking differential can provide additional traction should your vehicle become stuck. "
Lol, is Ford now having their specs written in a foreign language and then poorly translated to Engrish?

Maybe engage the locker BEFORE you get stuck. Most stucks aren't instantaneous. Yer hopin' for a bit that your don't get stuck before it happens!
To the OP, yes it's a great feature. Had 2 F250s with the e locker.
It ain't 4wd (obviously), but helps as much as any locker in a low traction situation, which is alot.
To those naysaying it (free ice cream here would have naysayers btw, either due to lactose intolerance, political affiliation or a senseless reason, lol) you've never driven an open diff truck and been sitting with the no traction wheel spinning and the traction wheel doin nothin but looking pretty!


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

time2roll

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Posted: 10/01/19 11:13am Link  |  Quote  |  Print  |  Notify Moderator

I wish Ford would offer an Eaton Truetrac. I would pay twice what they get for a locker.

camperdave

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Posted: 10/01/19 12:28pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:


To those naysaying it (free ice cream here would have naysayers btw, either due to lactose intolerance, political affiliation or a senseless reason, lol) you've never driven an open diff truck and been sitting with the no traction wheel spinning and the traction wheel doin nothin but looking pretty!


I have. I'm not an offroader, just sometimes want a little help getting out of a slick spot. My limited experience with a rear locker constantly going sideways on ice made me want to stick with a limited slip instead.

Grit dog

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Posted: 10/01/19 01:17pm Link  |  Quote  |  Print  |  Notify Moderator

If you spin the wheels on an extremely slick surface, both will spin on a posi just like a locker.
Guess that's why the Fords have a switch, for those that don't know what to do with a locker. Don't buy a GM, those axles lock up automatically when wheels spin. Great feature unless you'd rather be stuck or don't know how to handle it.

Strange, always wondered why on earth some trucks actually came with open diffs, even to this day, but very rarely. Now I know.

Also, don't use an exhaust brake and god forbid, don't drive a vehicle without ABS, traction control and stability control. Them things are death traps without those features that keep ya from going in the ditch!

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