Deadly frontend bounce
Fleet Mechanic
Joined: Jan 2007
Posts: 1,741
Likes: 3
I have an 06 F350 5.4, xl, 4x4. If your doing 50-65 mph or so, and hit a pothole or a series of washboards on the gravel roads, the trucks front left wheel will rebound and then continue rebounding. Kind of like once you give the wheel a chance to bounce once, it dribbles itself like a basketball. Almost sends the truck flying into the ditch, or shakes it to a million pieces!
This ain't death-wobble, folks. It's something completely different.
Death-Wobble is the steering wheel oscillating (as well as both front wheels) back and forth (i.e. rotating side-to-side) causing left-right motion of the truck.
This bouncing of the tire, up and down, is something completely different.
Check for a tread separation. Typically that's the only thing that has a tire sufficiently out-of-balance to make it hop that hard.
Just because a shock is "new" does not mean that it is "good". You may have gotten a dud from the factory (excrement happens sometimes). Also check the model number against the others; someone may have made a mistake in shipping (or packaging, at the factory, for that matter).
Incidentally, in the FWIW department, washboards will make ANY truck do that. But potholes are another story all together.
I suspect you have a number of factors all coming together to make a "perfect storm".
-blaine
Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Sam
Fleet Mechanic
Joined: Feb 2007
Posts: 1,320
Likes: 13
From: Mid Atlantic
I still think the front tire pressure is at least a contributing factor.
My F-350 requires 65/70 and I usually run +5 PSI to that.
If you're carrying an additional 300 gal that's at least 1650#'s.
Food for thought.
Also, you never said what kind of shocks you have on there.
My F-350 requires 65/70 and I usually run +5 PSI to that.
If you're carrying an additional 300 gal that's at least 1650#'s.
Food for thought.
Also, you never said what kind of shocks you have on there.
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Ginther
1999 - 2016 Super Duty
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Aug 25, 2015 02:36 PM
