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Rear end bounce at 45 and 65

 
  #1  
Old 09-11-2015, 08:36 PM
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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
 
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Old 09-12-2015, 07:46 AM
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https://www.ford-trucks.com/forums/1...40-45-mph.html

Not a 6.7L issue and has been around for years. good luck.
 
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Old 09-12-2015, 08:30 AM
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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.
 
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Old 09-12-2015, 08:55 AM
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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.
 
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Old 09-12-2015, 10:16 AM
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My 08 1 ton shortbread never had this problem...
 
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Old 02-10-2017, 10:49 AM
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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
 
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Old 02-10-2017, 05:08 PM
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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
 
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Old 02-10-2017, 05:30 PM
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Originally Posted by 67DART View Post
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.
 
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Old 02-11-2017, 07:39 AM
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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
 
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Old 02-11-2017, 10:13 AM
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Originally Posted by 67DART View Post
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.
 
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Old 07-31-2017, 05:56 PM
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Ive had the same problem on my long bed. Look up sulastic shackles. Just had them installed today and NO MORE BOUNCE!!!!!
 
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Old 09-01-2017, 01:01 PM
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Is the bounce gone in 2017?
 
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Old 09-01-2017, 01:06 PM
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Originally Posted by _red rocket_ View Post
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 05 F-250 long bed also had the problem.
 
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Old 09-03-2017, 01:24 PM
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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
 
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Old 09-04-2017, 06:45 PM
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Originally Posted by Batman7777 View Post
Is the bounce gone in 2017?
I haven't noticed it in mine. New frame, changes to the suspension.
 

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