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Old May 5, 2017 | 04:08 PM
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Bump and Dart

I have an fx4 and if I hit a good bump it sends the truck all over the road and if it is on a bend it almost wants to bounce you sideways. Has anyone else found this? Is it because of the stiff suspension? Thx in advance for replies
 
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Old May 5, 2017 | 04:21 PM
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What PSI are your tires at?
 
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Old May 5, 2017 | 04:22 PM
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Yes mine does it all the time especially on sharp bumps in the road. Mine is an F350 FX4 stiffer maybe?
 
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Old May 5, 2017 | 04:23 PM
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Are you talking about the whole truck or you feel your rear end kicking out from the bumps?
 
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Old May 5, 2017 | 04:38 PM
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Silly question, but is this your first solid axle truck? Maybe you just aren't used to how they react to bumps in the road?
 
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Old May 5, 2017 | 04:54 PM
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No I had a 08 f350 and it didn't act like that with bumps
 
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Old May 5, 2017 | 05:12 PM
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Originally Posted by Blwnsmoke
Are you talking about the whole truck or you feel your rear end kicking out from the bumps?
it feels like the whole truck wants to move infact today it put me in the other lane, glad no one was beside me. That's why I did this post, I didn't know if the shocks would have anything to do with it
 
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Old May 5, 2017 | 05:47 PM
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Sounds like bump steer? Is your truck stock height or does it have a leveling kit? A cheap leveling kit that hasn't got drop brackets can cause this.
 
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Old May 5, 2017 | 06:46 PM
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Originally Posted by eberlestock
Sounds like bump steer? Is your truck stock height or does it have a leveling kit? A cheap leveling kit that hasn't got drop brackets can cause this.
It sounds like your tires have too much pressure for the weight they are carrying. I suggest that you look at the weight charts for your tires and run no more than 15 PSI higher than needed for your load. For an empty F350 SRW 6.7, I suspect it's around 65 front and 60 back. If you have 80 in the back, I'd expect a wild ride when empty. My stiffer F450 does not act like you describe at all.
 
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Old May 5, 2017 | 08:29 PM
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the truck is stock and tires are around 60-65 psi
 
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Old May 6, 2017 | 09:15 AM
  #11  
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bump steer.
it seems to be worse in these trucks compared to other solid front axle trucks I have had.
put a leveling kit on it and it is worse
 
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Old May 6, 2017 | 12:21 PM
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Most of the time those characteristics are a factor of driving too fast for the road conditions. It's take a lot of work and money to make a truck handle washboard road surfaces and some other rough road conditions. A Baja truck can do it because they have mucho $$$$ in the suspensions.
 
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Old May 6, 2017 | 03:20 PM
  #13  
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Originally Posted by shortride
Most of the time those characteristics are a factor of driving too fast for the road conditions. It's take a lot of work and money to make a truck handle washboard road surfaces and some other rough road conditions. A Baja truck can do it because they have mucho $$$$ in the suspensions.
This is driving in the city so no major speeding
 
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Old May 6, 2017 | 03:43 PM
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factory shocks on alot of trucks arent worth the cheap metal theyre made from. im sure some nice bilsteins would help. thats where i would start and see what happens
 
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Old May 6, 2017 | 03:50 PM
  #15  
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i have never had anything like this happen, in fact its smother then my 2016 and 2014 super dutys were and all 3 have the fx4
 
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