70mph Rear End Bounce-CCLB - Ford Powerstroke Diesel Forum
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post #1 of 27 Old 12-05-2014, 11:28 AM Thread Starter
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70mph Rear End Bounce-CCLB

I know the topic has been beat to death about the rear end bounce at 45-50mph but I am getting one at 70mph. It mostly happens on highways that are concrete instead of blacktop and it bounces enough that my kidneys hurt, my lunch is remixed internally to the point that it may no longer stay internal, and no one can even talk right. It's like the little frog hopper ride at the amusement part going berserk. It is an embarrassment to even have someone ride in the truck, the look of bewilderment on their face when the +$60K truck tries to shake them out the window on a normal highway. The truck is a 2015 crew cab long bed SRW FX4 with just under 9k miles. Any thoughts or fixes for this?

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post #2 of 27 Old 12-05-2014, 01:38 PM
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This may help.....Roadmaster Active Suspension Kits | Helper Springs | Overload Springs FICM repair.com carry's them.

2013 F-250 lariat scsb FX4.
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post #3 of 27 Old 12-05-2014, 02:05 PM
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Mine does it as well. Since it's only doing it on concrete roadways I just accept it. I doubt there's any real solution that is worth the cash.



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post #4 of 27 Old 12-05-2014, 02:24 PM Thread Starter
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I would like to just accept it but when I'm on a road trip it makes it tough not to come unglued.

Does anyone know if any of the Carli suspension kits will eliminate the bounce?

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post #5 of 27 Old 12-05-2014, 02:26 PM
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friend just got rid of a 2013 for the same reason.
he took it to the dealer several times, but always
cannot replicate the customer complaint.

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post #6 of 27 Old 12-05-2014, 02:38 PM
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It's a matter of the roadway separations are at the right distance to make the issue MUCH worse. It's a CCLB thing that seems to be livin' thru the model years.

Sure a suspension setup such as a Carli could help. I'm sure they can give you better advice over the phone.



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post #7 of 27 Old 12-05-2014, 02:41 PM
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post #8 of 27 Old 12-05-2014, 04:04 PM
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I am leaning towards it being a shock effectiveness issue. The SD shocks seem to be in almost as far as they can go away from the tires. In contrast the F150 doesn't seem to have this issue and their shocks are placed out as close to the tire as possible. The F150 comes in a long bed super cab as their longest model so it isn't quite as long but if it was a frame issue I'm confident they would have issues with their much lighter duty frames.

There is also plenty of chatter in the off road sites about moving shocks closer to the tires for better effectiveness.

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post #9 of 27 Old 12-05-2014, 04:40 PM
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I have some folks with the Ranchos say the opposite, they run smooth as Butta'

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post #10 of 27 Old 12-05-2014, 05:54 PM
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I test drove a new supercab, when at 35 to 45 it had the same hop, when I rolled back in to the lot the salesman ask how i liked it, I told him about the hop and he said really thats the first complaint I have ever heard about.

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