Trans shaking
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More Turbo
Joined: Mar 2022
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Likes: 169
@Garbageman 134
To be clear, does this happen when your foot is standing on the gas, using a good amout of power, just before shifting from 1st to 2nd?
Or is it right during the shift? Then after the shift you can stand on the gas and all is smooth?
To be clear, does this happen when your foot is standing on the gas, using a good amout of power, just before shifting from 1st to 2nd?
Or is it right during the shift? Then after the shift you can stand on the gas and all is smooth?
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More Turbo
Joined: Mar 2022
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I did try it in normal mode while pulling the trailer and it was the same result
Hotshot
Joined: Oct 2006
Posts: 10,135
Likes: 7,941
From: Texas
It is called “axle wrap”.
This seems to be most prevalent in the F 250’s (lightest springs in the Super Duty line). And it seems to be more prevalent in the diesels, happening in more than just 1st gear.
Of course, this is just a guess on my part; but my logic tells me this is what is happening.
Best of luck getting this sorted out. Keep us posted if you find a solution, especially if it is not axle wrap……inquiring minds want to know.
https://www.ford-trucks.com/forums/1...from-stop.html
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More Turbo
Joined: Mar 2022
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OK. Think about this. 1st gear = maximum torque to drive line/ differential. When you apply throttle and there is resistance (pulling a trailer) so when the rear wheels are rotating forward, the rear diff housing is trying to rotate backward. Also, with some tongue weight the rear end has squatted some, pushing the carrier bearing and front end of the rear drive shaft down some. Now combine the lowered front of the drive shaft along with the nose of the diff pointing more upward you have the u-joint out of alignment just enough to cause a vibration.
It is called “axle wrap”.
This seems to be most prevalent in the F 250’s (lightest springs in the Super Duty line). And it seems to be more prevalent in the diesels, happening in more than just 1st gear.
Of course, this is just a guess on my part; but my logic tells me this is what is happening.
Best of luck getting this sorted out. Keep us posted if you find a solution, especially if it is not axle wrap……inquiring minds want to know.
https://www.ford-trucks.com/forums/1...from-stop.html
It is called “axle wrap”.
This seems to be most prevalent in the F 250’s (lightest springs in the Super Duty line). And it seems to be more prevalent in the diesels, happening in more than just 1st gear.
Of course, this is just a guess on my part; but my logic tells me this is what is happening.
Best of luck getting this sorted out. Keep us posted if you find a solution, especially if it is not axle wrap……inquiring minds want to know.
https://www.ford-trucks.com/forums/1...from-stop.html
More Turbo
Joined: Aug 2005
Posts: 687
Likes: 215
The 10 speeds do this. There is even a footnote in the owners manual about some shutter.
Mine does it (6.7) and I don't like it so I baby the start until I get to 3rd gear then apply more throttle. I've tried Tow/Haul and normal - it does it when towing. If I try a jack rabbit start with the RV (15k) it is sort of bad so I try to take it easy.
There are other threads on this site about this too.
Here is the note in my owner's manual......TRAILER TOWING HINTS
Towing a trailer places an extra load on your vehicle's engine, transmission, axle, brakes, tires and suspension. Periodically inspect these components during and after any towing operation.
When driving with a trailer or payload, a slight takeoff vibration or shudder may be present due to the increased payload weight.
Mine does it (6.7) and I don't like it so I baby the start until I get to 3rd gear then apply more throttle. I've tried Tow/Haul and normal - it does it when towing. If I try a jack rabbit start with the RV (15k) it is sort of bad so I try to take it easy.
There are other threads on this site about this too.
Here is the note in my owner's manual......TRAILER TOWING HINTS
Towing a trailer places an extra load on your vehicle's engine, transmission, axle, brakes, tires and suspension. Periodically inspect these components during and after any towing operation.
When driving with a trailer or payload, a slight takeoff vibration or shudder may be present due to the increased payload weight.
Fleet Mechanic
Joined: Dec 2016
Posts: 1,806
Likes: 539
From: Florida
Yup, while I didn't notice it on my 2019, and haven't felt it on the 23 yet, my 2004 Ram 2500 Cummins did this when I was towing. Unless the shuddering is violently shaking the truck, I believe what the OP is noticing is 100% normal.
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More Turbo
Joined: Mar 2022
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I'm surprised this does not come up more often from people who are pulling trailers, travel trailers, Etc. I got to wonder if there's any negative consequences long-term
Fleet Mechanic
Joined: Dec 2016
Posts: 1,806
Likes: 539
From: Florida
To answer your question, no, I don't think there are any long-term negative consequences from the shudder. As to why it doesn't come up all that much is anyone's guess... either a lot of folks don't pay that much attention, or the affected drivers are familiar with the shudder and don't worry too much about it.
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