I have a 2008 F250 with 75k miles on it. If I hit a bump in the road on the highway the front end starts vibrating uncontrollably. Its hard to even hold the steering wheel when it does this. What could it be?

 

Death Wobble. Commom problem because of the SFA.

Check your tire pressures, maybe rotate the tires.

Check all of your front end components. Ball joints, hubs and stuff.

Check your steering stabilizer as well. Some have cured it by adding a dual steering stabilizer setup.

 

What size Tire/Wheel combo do you have? I just went through this for the past 2 months replacing parts 1 at a time.

 

285-75-r20

 

I installed new shocks,adjustable track bar,steering stabilizer shock and the fix was dual steering stabilizers from rancho(bought online 140.00 with shipping) and also tightened up steering gear 1/2 turn.I checked all ball joints and they are tight.I suspect some wear in all the components add to the death wobble,thats why the dual stabilizers and tighten up steering gear helped solve the problem.

 

Good info.

 

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</TD><TD class=bb_descon vAlign=top align=left>Rancho Steering Damper Kit - Dual - Incl. Brackets / Hardware / 2 Stabilizer Shocks - w / Rancho PN[RS6510 / RS6511] System;
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Part Number: RS98510
Notes: Dual; Incl. Brackets / Hardware / 2 Stabilizer Shocks; w / Rancho PN[RS6510 / RS6511] System;
Features: <LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Dual steering stabilizer configuration<LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Ideal For Vehicles With Over Sized Tires<LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Includes Shocks and Mounting Hardware<LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Limited Lifetime Warranty<LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Liquid Metallic Finish<LI style="LIST-STYLE-POSITION: outside; MARGIN-LEFT: 25px">Reduces Wheel Shimmy And Bump Steer
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Condition: New

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<TABLE cellSpacing=0 cellPadding=0 width="100%" align=center><TBODY><TR><TD class=bb_pft align=left>This Part Fits the Following:</TD><TD style="TEXT-ALIGN: right; COLOR: black; FONT-WEIGHT: bold" class=bb_pft2>Catalog: Performance</TD></TR><TR><TD colSpan=2><TABLE border=0 cellSpacing=0 cellPadding=0 width="100%"><TBODY><TR class=white><TD class=bb_pfh1 align=left>Vehicle</TD><TD class=bb_pfh2 align=left>Sub Model</TD></TR><TR><TD class=bb_pfv1 align=left>• 2005 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2006 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2007 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2008 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2009 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2010 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR><TR><TD class=bb_pfv1 align=left>• 2011 Ford F250 Super Duty</TD><TD class=bb_pfv2 align=left>4WD </TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>

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i just had a 2008 f 350 that had that problem and the bushings in the track bar were worn out and replaced the track bar and the problem went away

 

I think every truck is a little different.I replaced track bar with adjustable one after alot of research thinking that would cure my problem,took truck for a drive after install and still did the Death Wobble.Took off the BFG's 315/17's and installed my 295/18's and helped some then installed the dual stabilizer and tightened up my steering gear 1/2 turn(not easy to do)and front end quit wobbling.