2018 F250 shudder in reverse
 

Hi guys.... Have a brand new 250 with only 1600 miles. Love it! Great truck. It's the 6.2 gas.
Hauled our 7200 pound camper and it did great! Much better than our old F150
However, backing into the site I felt a shudder. Tires seemed to bind a bit but it was brief and everything went well.
Got home yesterday, backed it down our long driveway fine but then ended up turning it around in the yard. Same shudder when extra gas applied.
Only does it under the load of the camper, can't replicate without a load . Sort of feels like a bad U joint does. Like a rumble, vibration .
i have seen this in some forums but no clear answers.
Any ideas?
Thanks

Yes sir. Wdh but with out friction bar

Interesting! Sorry, but I don't know the name. I'll look when I get back to the truck. But it is the rounded bars that clip into the hitch then the bars run parallel to the ground.
this didn't happen with the F 150 same set up

And it's the Pro Series round bar style

Haha not freaking out. Plenty of warranty left. I didn't even freak out when my wife blew the motor in our 2016 2.7 EB . Warranty covered it.
I'm always good about taking of the friction bar for any tight turns or backing . Not sure how wdh would affect backing but I'll try to replicate tomorrow without wdh.
They claim with 2017+ F250 wdh isn't needed. I have towed about 10 miles without it with the 250 and it does incredibly well.

New info.... After testing!
Here are measurements of rear and front wheel well. Kind of surprising.
Camper ON- no wdh back 42.75 front 43
No camper at all- back 44 front 43
Camper ON with wdh back 43 1/8 front 43
The front measurements are thebsame throughout

Now.... With sprint bars on, I drove camper to front yard (very large area) and then turned and backed into the stone driveway. The shudder was replicated twice . Each time, there was a decent amount of moaning throughout the wdh spring bars and seemingly all along the frame of the camper. Seemed tight and needed more gas to back up.

Without the spring bars on, after several passes, I was unable to replicate the shudder. It was smoother, no groaning and barely needed gas to back up.
My conclusion is that the wdh system I have, Pro Series , should not be used while backing. This contributed to the shudder condition probably due to the increased torque throughout the TV, wdh and TT. May be causing an axle wrap or something .

I feel better that my new beast's trans isn't screwing up.