Torque-On-Demand issues?
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Joined: Nov 2015
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Torque-On-Demand issues?
I own a 2015 F150 Lariat Supercab, with the 5.0L V8. The truck came with the Torque-On-Demand transfer case. The goal of this thread if to gather feedback on how that transfer case work in order to assist on pinpoint a issue that I'm seeing and which seems to be happening with other folks with trucks equipped with this t-case. Please refer to this thread for background on the issue I'm referring to.
Here's a summary of what I', experiencing:
On the thread linked above, a few other folks had indicated experiencing the first issue above on trucks with this t-case.
You can tell you have this T-Case if you 4WD rotary switch has 4 positions: 2H, 4A, 4H and 4L.
According to the service manual, the Torque-On-Demand transfer case is equipped with a magnetic clutch the provides variable torque on all 4WD modes.
With that said, I'd like to confirm some of the behaviors I saw on my truck, to better understand how this T-Case works and hopefully this would help pinpoint the source of the issues mentioned above.
So if you have a truck with the same T-Case, can you confirm you see the following behavior:
On 4H and 4L binding is not as noticeable as in "regular" t-cases. More specifically: With the truck on 4A, there is no binding even steering tight. On 4H/4L binding is only noticiable under acceleration (even lightly). If you jack the front of the truck while it's on 4H or 4L you can still spin the front wheels - on a "conventional" T-Case you would not be able to.
The bottom line of this behavior is that this T-Case doesn't "mechanicly locks" the front and rear shafts and instead uses a variable, magnetic type of coupling.
I believe that this type of coupling, could be contributing to the symptoms mentioned on the above thread. It would be great if you can try observing this behavior on your truck and report back on this thread.
Thanks,
Ricardo
Here's a summary of what I', experiencing:
- Light vibration on the gas pedal under certain acceleration patterns;
- "hummm" / griding noise when coasting with 4A activated
On the thread linked above, a few other folks had indicated experiencing the first issue above on trucks with this t-case.
You can tell you have this T-Case if you 4WD rotary switch has 4 positions: 2H, 4A, 4H and 4L.
According to the service manual, the Torque-On-Demand transfer case is equipped with a magnetic clutch the provides variable torque on all 4WD modes.
With that said, I'd like to confirm some of the behaviors I saw on my truck, to better understand how this T-Case works and hopefully this would help pinpoint the source of the issues mentioned above.
So if you have a truck with the same T-Case, can you confirm you see the following behavior:
On 4H and 4L binding is not as noticeable as in "regular" t-cases. More specifically: With the truck on 4A, there is no binding even steering tight. On 4H/4L binding is only noticiable under acceleration (even lightly). If you jack the front of the truck while it's on 4H or 4L you can still spin the front wheels - on a "conventional" T-Case you would not be able to.
The bottom line of this behavior is that this T-Case doesn't "mechanicly locks" the front and rear shafts and instead uses a variable, magnetic type of coupling.
I believe that this type of coupling, could be contributing to the symptoms mentioned on the above thread. It would be great if you can try observing this behavior on your truck and report back on this thread.
Thanks,
Ricardo
Member
Joined: Nov 2015
Posts: 96
Likes: 15
I have everything you mentioned. The vibration can also be felt in the dead pedal, and seems to be the same feeling I get in 2H, although that is usually much more muted.
I own a 2015 F150 Lariat Supercab, with the 5.0L V8. The truck came with the Torque-On-Demand transfer case. The goal of this thread if to gather feedback on how that transfer case work in order to assist on pinpoint a issue that I'm seeing and which seems to be happening with other folks with trucks equipped with this t-case. Please refer to this thread for background on the issue I'm referring to.
Here's a summary of what I', experiencing:
On the thread linked above, a few other folks had indicated experiencing the first issue above on trucks with this t-case.
You can tell you have this T-Case if you 4WD rotary switch has 4 positions: 2H, 4A, 4H and 4L.
According to the service manual, the Torque-On-Demand transfer case is equipped with a magnetic clutch the provides variable torque on all 4WD modes.
With that said, I'd like to confirm some of the behaviors I saw on my truck, to better understand how this T-Case works and hopefully this would help pinpoint the source of the issues mentioned above.
So if you have a truck with the same T-Case, can you confirm you see the following behavior:
On 4H and 4L binding is not as noticeable as in "regular" t-cases. More specifically: With the truck on 4A, there is no binding even steering tight. On 4H/4L binding is only noticiable under acceleration (even lightly). If you jack the front of the truck while it's on 4H or 4L you can still spin the front wheels - on a "conventional" T-Case you would not be able to.
The bottom line of this behavior is that this T-Case doesn't "mechanicly locks" the front and rear shafts and instead uses a variable, magnetic type of coupling.
I believe that this type of coupling, could be contributing to the symptoms mentioned on the above thread. It would be great if you can try observing this behavior on your truck and report back on this thread.
Thanks,
Ricardo
Here's a summary of what I', experiencing:
- Light vibration on the gas pedal under certain acceleration patterns;
- "hummm" / griding noise when coasting with 4A activated
On the thread linked above, a few other folks had indicated experiencing the first issue above on trucks with this t-case.
You can tell you have this T-Case if you 4WD rotary switch has 4 positions: 2H, 4A, 4H and 4L.
According to the service manual, the Torque-On-Demand transfer case is equipped with a magnetic clutch the provides variable torque on all 4WD modes.
With that said, I'd like to confirm some of the behaviors I saw on my truck, to better understand how this T-Case works and hopefully this would help pinpoint the source of the issues mentioned above.
So if you have a truck with the same T-Case, can you confirm you see the following behavior:
On 4H and 4L binding is not as noticeable as in "regular" t-cases. More specifically: With the truck on 4A, there is no binding even steering tight. On 4H/4L binding is only noticiable under acceleration (even lightly). If you jack the front of the truck while it's on 4H or 4L you can still spin the front wheels - on a "conventional" T-Case you would not be able to.
The bottom line of this behavior is that this T-Case doesn't "mechanicly locks" the front and rear shafts and instead uses a variable, magnetic type of coupling.
I believe that this type of coupling, could be contributing to the symptoms mentioned on the above thread. It would be great if you can try observing this behavior on your truck and report back on this thread.
Thanks,
Ricardo
