Rear end bounce at 45 and 65
 

I have a 2013 f350 4 door longbed single rear wheel. The rear end bounces violently at 45 and 65 mph. Just today I had the truck had new shocks put on, was aligned balanced and tires rotated but it still bounces. I know there was already a thread on this but i never saw if the guy found a solution. If someone could post the link of the thread or chime in if they ever found a solution it'd be appreciated

https://www.ford-trucks.com/forums/1...40-45-mph.html

Not a 6.7L issue and has been around for years. good luck.

Is this something more than the extra rigidity that a one ton has? That will always be more than a half ton. Try putting some weight in it.

Yup, work that 1 ton with a 10,000 pound trailer and your problem will be solved.

It is a combo of a 1-ton stiff suspension along with concrete highway with expansion joints at certain speeds.

I found that it is the best time to phone my kids, via hands-free, so they can listen to the vibrato in my voice.

My 08 1 ton shortbread never had this problem...

Wheel Length base and bouncing along concrete highway expansion sections is a different problem than the ~40 mph rear bounce on any road surface.


Check -> Rear end bounces @ 40-45 MPH

BOUNCE
 

Hello,


I posted a TSB from Ford that provides to correct this problem on the long box trucks
do a search, it will pop up and a lot of posters have claimed it works!


John

It made no difference on my 2015 at all.

BOUNCE
 

Hello,

I have the TSB part although I never installed mine on my 2016

I do ride the truck around with only 65 PSI tire pressure when not towing my trailer.
Otherwise at 80 psi it rides like a rock unloaded and hops to the side on rough roads.

great ride at 65 up front and 60 to 65 in rear empty.
John

Yes there's some reduction to wheel hop by airing down to 65psi when the truck is empty. Fords' TSB part is expensive at $800.00 and not covered once the truck has exhausted the 3yr - 36,000 warranty and it's not covered under the ESP plan. I've been to 3 Ford Dealerships to get my wheel hopping issue addressed through warranty and all turned it down.

Ive had the same problem on my long bed. Look up sulastic shackles. Just had them installed today and NO MORE BOUNCE!!!!!

Is the bounce gone in 2017?

My 05 F-250 long bed also had the problem.

How about the Sulastic shackles? They should take some rigidity out of the rear.
https://www.ford-trucks.com/forums/1...2-ton-now.html

I haven't noticed it in mine. New frame, changes to the suspension.