Elocker
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Senior User
Joined: Mar 2003
Posts: 488
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From: Gettysburg, Pa
Elocker
I just got a 2015 F150 and I just learned that is has a 3.31 E-locker rear end. I am used to a limited slip in my old F150, how does this new system work? Is t something that can be turned on or off?
Fleet Mechanic
Joined: Dec 2013
Posts: 1,268
Likes: 35
From: Utica, Nebraska
It's an electronic locker in the differential. You pull the 2wd, 4x4hi, 4x4low **** to lock it. What it does is locks the differential and puts power to both wheels, great for off roading and pulling boats out of boat launches.
Lead Driver
Joined: Sep 2003
Posts: 5,844
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From: Albuquerque
Also, when the E-locker is not active...then you have an open diff. Meaning, the tire with the least grip gets the power. But wait...
The argument with the open diff is that it works well with Ford's AdvanceTrac Electronic Stability Control.
biz
The argument with the open diff is that it works well with Ford's AdvanceTrac Electronic Stability Control.
biz
Super Moderator
Joined: Aug 2003
Posts: 25,479
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From: Isanti, MN
The E-locker is great for those rare occasions when it's useful. I've probably used mine a half dozen times, but all of those I could have gotten out without it easy enough. You want to be careful using this in snow, the rear end wants to go sideways almost instantly when you break both rears loose at the same time.
Lead Driver
Joined: May 2015
Posts: 5,871
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From: Mts. S. of San Francisco
I've used the E-locker several times, but on most occasions I find it more reliable to just switch to 4H. I "usually" back up the last couple hundred feet of our driveway, and it's a relatively steep gravel stretch. In 2H without the E-locker, it will almost guaranteed spin the active wheel. The E-locker reduces that spin, but it can also result in both wheels spinning.
Because of the steepness, most of the weight is on the front wheels anyway. So shifting to 4H takes care of that little issue, and I don't get any wheel spin on any corner.
Because of the steepness, most of the weight is on the front wheels anyway. So shifting to 4H takes care of that little issue, and I don't get any wheel spin on any corner.
Lead Driver
Joined: Sep 2003
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From: Albuquerque
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Mountain Pass
Joined: Oct 2016
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I love my LSD(limited slip diff), every truck i ever bought i made sure that the LS or posi was in it the rear end. Hundreds of thousands of miles without a lick of trouble from anyone of them. While searching for my f150, just about every truck i looked at had the "regular rear axle" and the odd one with the e-locker, i just took for granted that this was a ford thing and they called the lsd's e-lockers. WRONG!! A great salesman i had who new his product thoroughly, he explained to me what it was all about, after he saw i new about mechanics, he said its an actual locker that you engage from inside the truck. I know and have had the ARB in some street cars many moons ago, this one is actuated electricaly. Sumbich, didnt know they were putting them in the trucks now, great option if lsd(posi) is not available. For the $400 or 500 dollars it costs, id get it, i now understand about the traction control and how the brakes get regulated and someone may say its not worth or neccessary but i say get that bugger regardless. Just my 2¢.
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Lead Driver
Joined: Sep 2003
Posts: 5,844
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From: Albuquerque
Don't get the question?
Yes...it disengages above 25mph. If you want to drag race, then drive in 4hi with e-locker engaged. Once at 25mph the e-locker disengages, but you still running down the lane in 4hi.
biz
Yes...it disengages above 25mph. If you want to drag race, then drive in 4hi with e-locker engaged. Once at 25mph the e-locker disengages, but you still running down the lane in 4hi.
biz
Mountain Pass
Joined: Oct 2016
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Fleet Mechanic
Joined: Jul 2005
Posts: 1,463
Likes: 103
From: Staten Island, NY
Well, you can never FULLY shut off the traction control. It's always lurking there trying to prevent what it sees as unproductive attempts at acceleration. The e-locker drops out above 25mph and presumably you're in 4X4 auto for this race. Unless you're drag racing in the snow I can't imagine breaking all 4 tires loose above 25mph.
Put it in Sport mode, punch the traction control button twice for Advanced Sport Mode, e-locker on, power brake it and just GO!
Put it in Sport mode, punch the traction control button twice for Advanced Sport Mode, e-locker on, power brake it and just GO!
Senior User
Joined: May 2007
Posts: 165
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Yup. Just experienced this a couple of days ago in the van. 3.73 open differential, and I was backing up the driveway with the left side wheels on snow. The left wheel broke free and the ABS pump started pulsing. The van got traction and accelerated backwards with each pulse as it braked the spinning wheel. It works well, and no clutches to burn out or friction modifier to mess with.
Senior User
Joined: May 2007
Posts: 165
Likes: 0
Well, you can never FULLY shut off the traction control. It's always lurking there trying to prevent what it sees as unproductive attempts at acceleration. The e-locker drops out above 25mph and presumably you're in 4X4 auto for this race. Unless you're drag racing in the snow I can't imagine breaking all 4 tires loose above 25mph.
Put it in Sport mode, punch the traction control button twice for Advanced Sport Mode, e-locker on, power brake it and just GO!
Put it in Sport mode, punch the traction control button twice for Advanced Sport Mode, e-locker on, power brake it and just GO!