TREMOR Front Diff performance
Certified Thread Hijacker
Joined: Aug 2001
Posts: 14,441
Likes: 60
well if that’s true, then that is just as stupid as the electronic locking rear diff.
Never is engaged when you need it, and when you do lock it in it cuts over a certain speed.
Terrible system for driving on unplowed roads, hunting and ice fishing where higher speeds are needed.
And to top off there stupid system requires much more often brake pad changes.
As as much as I like Ford, they definitely have some dumb features.
Never is engaged when you need it, and when you do lock it in it cuts over a certain speed.
Terrible system for driving on unplowed roads, hunting and ice fishing where higher speeds are needed.
And to top off there stupid system requires much more often brake pad changes.
As as much as I like Ford, they definitely have some dumb features.
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
well if that’s true, then that is just as stupid as the electronic locking rear diff.
Never is engaged when you need it, and when you do lock it in it cuts over a certain speed.
Terrible system for driving on unplowed roads, hunting and ice fishing where higher speeds are needed.
And to top off there stupid system requires much more often brake pad changes.
As as much as I like Ford, they definitely have some dumb features.
Never is engaged when you need it, and when you do lock it in it cuts over a certain speed.
Terrible system for driving on unplowed roads, hunting and ice fishing where higher speeds are needed.
And to top off there stupid system requires much more often brake pad changes.
As as much as I like Ford, they definitely have some dumb features.
Tremor uses a locking rear differential with electronic shift-on-the-fly engagement and a new Dana® limited-slip front differential. In certain modes, the front axle can sense when a tire has lost traction and uses the brakes to send power to the wheel with traction.
Logistics Pro
Joined: May 2017
Posts: 3,523
Likes: 483
From: Southern OH
That's not even a limited slip, that's an open differential with traction control.
More Turbo
Joined: Jan 2016
Posts: 684
Likes: 84
From: Green Bay Wi
Interesting. I actually find my 2016 f250 Fx4 performs better on muddy and snow covered forest roads than the other trucks I have owned.The rear locker seems to work better than the junk GM and dodge has. I do wish fords locker would stay locked at a little higher speeds than it does. But if you going over 25 mph you probably really don’t need a locker. The couple of times I have gotten my ford stuck all 4 tires seem to be spinning. When my brothers dodge got stuck only one front and on rear were spinning. Saw the same thing with GM trucks.
Cargo Master
Joined: Apr 2003
Posts: 2,059
Likes: 426
From: Too close to Houston
I worked in East Texas in the early 80's. I don't know if limited slip was widely available in front axles then but they weren't popular. The folks with both front tires spinning spent more time in the body shop after sliding sideways into gateposts when the fields were muddy. Having trac-lok, limited slip, or whatever on the back helped push you through but it was best to have at least one front wheel not slipping in order to steer.
New User
Joined: Aug 2005
Posts: 22
Likes: 1
Tremor uses a locking rear differential with electronic shift-on-the-fly engagement and a new Dana® limited-slip front differential. In certain modes, the front axle can sense when a tire has lost traction and uses the brakes to send power to the wheel with traction.
That's not even a limited slip, that's an open differential with traction control.
00t444e
This is exactly what I thought when I read it. I'm wondering if it really has a limited slip at all. I was hoping that it would be like the True-Trac or a Torsen.
Isn't that what the Raptor uses??
I looked on Dana's Website for a new limited slip diff and could not find anything in the light to medium duty systems.
I will contact Ford Parts to see what I can find out.
Years ago Audi came up with an Option on the Quattro Cars called ELD or Electronic Locking Differential. I was considering an Audi All-Road Quattro at the time so I checked with their parts department to find out what type of diff it actually was. What I found was that there was no actual locking mechanism at all. It was purely a traction control system using the brakes. I was glad that I checked and that did it for me. No Audi. I believe that Audi got in trouble over this. I hope Ford isn't trying the same thing.
Jim
That's not even a limited slip, that's an open differential with traction control.
00t444e
This is exactly what I thought when I read it. I'm wondering if it really has a limited slip at all. I was hoping that it would be like the True-Trac or a Torsen.
Isn't that what the Raptor uses??
I looked on Dana's Website for a new limited slip diff and could not find anything in the light to medium duty systems.
I will contact Ford Parts to see what I can find out.
Years ago Audi came up with an Option on the Quattro Cars called ELD or Electronic Locking Differential. I was considering an Audi All-Road Quattro at the time so I checked with their parts department to find out what type of diff it actually was. What I found was that there was no actual locking mechanism at all. It was purely a traction control system using the brakes. I was glad that I checked and that did it for me. No Audi. I believe that Audi got in trouble over this. I hope Ford isn't trying the same thing.
Jim
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Hotshot
Joined: Mar 2017
Posts: 10,172
Likes: 1,376
From: Chaz
I had this in my Tundra. It worked ok. Made a bunch of racket and could slow you down if you needed to make it across a large muddy area. The worst complaint I heard was brake wear on trucks that were off road a lot in like mud.
Fleet Mechanic
Joined: Apr 2015
Posts: 1,641
Likes: 507
From: Phelan CA
Tremor uses a locking rear differential with electronic shift-on-the-fly engagement and a new Dana® limited-slip front differential. In certain modes, the front axle can sense when a tire has lost traction and uses the brakes to send power to the wheel with traction.
That's not even a limited slip, that's an open differential with traction control.
00t444e
This is exactly what I thought when I read it. I'm wondering if it really has a limited slip at all. I was hoping that it would be like the True-Trac or a Torsen.
Isn't that what the Raptor uses??
I looked on Dana's Website for a new limited slip diff and could not find anything in the light to medium duty systems.
I will contact Ford Parts to see what I can find out.
Years ago Audi came up with an Option on the Quattro Cars called ELD or Electronic Locking Differential. I was considering an Audi All-Road Quattro at the time so I checked with their parts department to find out what type of diff it actually was. What I found was that there was no actual locking mechanism at all. It was purely a traction control system using the brakes. I was glad that I checked and that did it for me. No Audi. I believe that Audi got in trouble over this. I hope Ford isn't trying the same thing.
Jim
That's not even a limited slip, that's an open differential with traction control.
00t444e
This is exactly what I thought when I read it. I'm wondering if it really has a limited slip at all. I was hoping that it would be like the True-Trac or a Torsen.
Isn't that what the Raptor uses??
I looked on Dana's Website for a new limited slip diff and could not find anything in the light to medium duty systems.
I will contact Ford Parts to see what I can find out.
Years ago Audi came up with an Option on the Quattro Cars called ELD or Electronic Locking Differential. I was considering an Audi All-Road Quattro at the time so I checked with their parts department to find out what type of diff it actually was. What I found was that there was no actual locking mechanism at all. It was purely a traction control system using the brakes. I was glad that I checked and that did it for me. No Audi. I believe that Audi got in trouble over this. I hope Ford isn't trying the same thing.
Jim
Ford engineers state it may be a clutch type, but we all know how engineers are 100% correct.
Ford Parts is worthless as well. They only know of the existing open differential, and no Tremor specific parts are listed.
Senior User
Joined: Apr 2017
Posts: 136
Likes: 2
From: Bay Area California
Off topic question. Could My Wife's 18 Expedition that's wheel drive have this type of front diff? Recently We were at our cabin during a heavy snow storm. It seemed as the all wheel drive, wouldn't kick in until the rear tires started spinning. Then when the front wheels engaged, it pulled you to the side of the road. My Wife almost went in the ditch because of this. I chalked it up to her lack of experience until I got in and it did it to me.
Mountain Pass
Joined: Mar 2011
Posts: 162
Likes: 3
From: Southbridge, MA
Funny you mention that... on my 2016 F150 I was surprised I needed rear brake pads, especially the passenger rear at 40k miles, until it occurred to me it's the traction control (or in reality my right foot) causing the pads to wear quickly. Front pads were perfectly fine at 40K miles and still great at 71k miles when I traded it in.
New User
Joined: Aug 2005
Posts: 22
Likes: 1
DSLTRK60
Thanks for the reply.
Exactly. It's been a while but from what I remember of the clutch type limited slips, if you have both wheels off of the ground and spin a wheel, both would spin the same direction, with an open diff, they will spin opposite directions. Not sure about the True-trac or Torsen. But Whatever.
In reading articles about the Tremor, I keep seeing references about the brakes being used to stop a spinning wheel and drive the wheel with traction. This implies an open diff with traction control. I hope that there is more to it than that. If they are using a clutch typed limited slip in the front then I am not interested. I will by an F350 and do the mods myself using a Torsen or True-Trac.
Jim
Thanks for the reply.
Exactly. It's been a while but from what I remember of the clutch type limited slips, if you have both wheels off of the ground and spin a wheel, both would spin the same direction, with an open diff, they will spin opposite directions. Not sure about the True-trac or Torsen. But Whatever.
In reading articles about the Tremor, I keep seeing references about the brakes being used to stop a spinning wheel and drive the wheel with traction. This implies an open diff with traction control. I hope that there is more to it than that. If they are using a clutch typed limited slip in the front then I am not interested. I will by an F350 and do the mods myself using a Torsen or True-Trac.
Jim
Logistics Pro
Joined: May 2017
Posts: 3,523
Likes: 483
From: Southern OH
Off topic question. Could My Wife's 18 Expedition that's wheel drive have this type of front diff? Recently We were at our cabin during a heavy snow storm. It seemed as the all wheel drive, wouldn't kick in until the rear tires started spinning. Then when the front wheels engaged, it pulled you to the side of the road. My Wife almost went in the ditch because of this. I chalked it up to her lack of experience until I got in and it did it to me.
Logistics Pro
Joined: Mar 2019
Posts: 4,064
Likes: 13
Applying slight braking (e brake) to a rear limited slip (open diff too), is a technique sometimes used to get it to transfer more power to the wheel with traction. Maybe being on the front (no e brake), they are doing it electronically as needed.