Rear suspension shake.
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Joined: Dec 2009
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Rear suspension shake.
I have a 2012 F350 Lariat with 2000 miles on it. I just drove it on a 400 mile interstate trip. During the drive at 65-75 mph regaurdless of the interstate road conditions the rear suspension would begin a very cyclic shake that could be felt throught the whole vehicle. The shake would start small then cycle to bad then back to small then start over again. It almost feels like it cycles in groups of three shakes then subsides. If you hit a bump in the road it goes away but then starts over again in the same pattern. Any suggestion?
Senior User
Joined: Mar 2003
Posts: 428
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From: Hot Springs Village, Ar
Check tires closely for tread separation. Just had similar issue, could not locate but needed back tires anyway. Inner rear blew out on way to get new ones. Otherwise, I would think driveshaft or driveshaft support bearing, alighment, etc.?
Also could be tire balance?
Also could be tire balance?
Last edited by Calli; Jun 13, 2012 at 09:03 AM. Reason: additional
Lead Driver
Joined: Aug 2004
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From: Gilbert
This is a long thread but you're not the only one with a rear end hop. Although your symptoms seem somewhat different than what others reported.
https://www.ford-trucks.com/forums/1...40-45-mph.html
Unfortunately no outcome/resolution that I've read about.
https://www.ford-trucks.com/forums/1...40-45-mph.html
Unfortunately no outcome/resolution that I've read about.
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Thanks for your suggestions
I will read the long thread. I believe it is a rear suspension issue. I don't remember it doing it with my fifth wheel attached. It does it mostly at 65-75 mph on the interstate. It is so bad that I don't think I would be able to take it on another long trip without my trailer. It feels like the rear springs are continously wrapping and releasing causing the truck to hop. I as well lowered rear tire pressure thinking it would help to no avail. I know Super Dutys ride rough but the continual hop is unreasonable. My 08 F350 same body style did not do it. The worst part about it is my wife cannot hold fingers steady enough over her phone to text any of her friends, so she ends up talking to me while we drive. :-Thanks for all of your input. We have a good relationship with our local Ford dealer and will take the complaint to them. I will keep everyone posted if any revelations happen.
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