Join Date: Nov 2007
Feedback Score: 0 reviews
Well, it sounds like at those speeds, you are hitting a natural harmonic of your suspension, but shocks should damp that out. Did they try replacing the rear shocks? What shocks did your truck come with? I have the same truck except in a 250 and no air bags, I DON'T have the bounce. After reading your sig, I'm wondering if the air bags are part of the problem. If you are getting the bounce unloaded, does varying the pressure in the air bags have any effect? How much air do you carry in them when you are unloaded? I can't help but think that a few psi in an empty truck is causing a cyclic oscillation that builds on itself and the shocks aren't handling it. Did the truck always do this or has it appeared after the air bag install?
2012 F550XL 19,500gvw, Oxford White/Steel interior, 6.7psd, Stainless simuators, Sync, 16Ft Morgan body, Waltco tuckaway 2500 lift gate.
2011 F250 CC Lariat Ultimate, Royal Red/Pale Adobe, 18" wheels, 3.31 locker, 172"WB factory Nav/Sync,etc.
Also have a 1997 F450 7.3 XLT with 14' box, Hypertech programmer
1987 F350 6.9 Banks Sidewinder, 12' box
Still going at 200K+
Traded:08 F250 CC 4x4 Lariat, 172"WB
Traded:01 F350 CC 4x4 Lariat, 172"WB