It is not safe to drive a Ford Expedition with a broken lower trailing bar because it can snap the drive-shaft mount.
Easiest way to remember is the leading - "L" Lower and trailing "T" Top plugs. Therefore in the housing as it sits in the vehicle the lower pair is leading and the upper pair is trailing.
top remember it by trailing-top leading-lower
The rear suspension Trailing Arm bushings are likely worn out and/or the rear shocks are in need of replacement. There is an upper and a lower trailing arm on both sides of the vehicle in the rear suspension. As a test, grab a firm hold on the lower trailing arm and try to twist it. If your able to move it even a little, the bushings are shot.
De Soto
which ones? upper or lower?
It's most likely your lower Trailing Arm bushings that are severely damaged. It can also be the upper Trailing Arm bushings. Grab the arm and see if you can twist it. If so, it needs to be changed. You can get polyurethane bushings from 4x4parts.com or you can buy the entire arms from parts.com. I changed just my lower with polyurethane and the rocking stopped. I still need to replace the upper but I didn't like the dealer price ($600) and, like i said, my rocking stopped.
Hernando de Soto was the first person to lead an expedition to the Mississippi river.
The pump impeller and housing are mounted on the lower drive unit. When the lower drive is drained of gear oil, lower it. There will be a long vertical drive shaft that stays mounted to the drive. Locate all the ring seals and gaskets and replace with the new impeller.
Drive less! Or don't drive at all ;-]
replace all 8 bushings of the control arms both upper and lower (known as either stabilizer bar or trailing bar)
If front wheel drive, the rear strut on that side is most likely bad. Rear wheel drive it could be the shock or a broken spring. If it is a spring, the corner should be a lot lower than the other side.
yes!