I do not have the driveline vibrations that so many others are experiencing but I do have problems with shimmy/nibble in the steering wheel. I was thinking that the Expy/Navigator has the same front end as the 04 F150. Does anyone know if these owners are experiencing similar problems with the nibble/shimmy in the steering wheel. If not I wonder what the difference is.

 

Our Lariat 4x2 has a bit of the nibble, not sure if it is due to the roads around here or not...

 

A slight nibble showed up in my FX4 at around 500 miles. I had the wheels off to install my Kleen wheels for the brake dust issue at around 600 miles. Once they were installed the nibble went completely away and hasn't returned. I have 1400 miles on it now. The only thing I can figure is the wheel lug nuts weren't evenly torqued. It might be worth a try.