I had no idea these rigs were doing this! As someone who owned Jeeps over the years, this was not an uncommon problem. Usually it was the steering damper, but a number of worn front end components can be involved.

If you are having problems narrowing it down at your Ford dealer, take it to an off road shop. These guys usually have a fair amount of experience with the geometry and workings of the suspension and steering mechanisms.

Having personally experienced a wobble, it is some scary stuff...

 

Holy Mother Farmer!!!!!! Three times in the shop for that should be a lemon law buy back vehicle. I thought the Tundra bed bounce issues were bad but this takes the cake.
You first year guinea piggers sure are brave.

 

The 'Death Wobble' problem started with the change from leaf springs up front to coil springs up front in 2005.

Larger than stock tire/wheels increase the likelihood that DW will occur, as will worn bushings, a worn stabilizer (primary reason), running max front tire psi, and/or worn suspension components.

A competent alignment shop can diagnose the issue and, as Marauder stated, a good off-road shop can as well. A quality steering stabilizer (Bilstein) makes a big difference.

 

Is this the 2011 in your sig that's doing that?

 

yes. Lots of info here: https://www.ford-trucks.com/forums/1...40-45-mph.html