Originally Posted by 85MH325
The Excursion has some design flaws that contribute to that vague feeling I'm sure you're having. I switched to "E" range tires (my Ex came with "D"s that got recalled) and I replaced the junk stock shocks with some really good Edelbrock gas shocks. The rear axle four leaf spring stack is only half that of the Superduty trucks, and the four spring stack isn't sufficient to keep the axle centered under the Excursion causing rear-axle steering. THAT is a real problem without towing; it's a disaster with a trailer attached. That requires Land Yot radius rods and a Helwig 36mm sway bar to overcome the shortcomings of the design. My Ex now tows the 34' like it's on rails. It used to be white knuckles all the way.
Good luck with yours!
Just finished the installation of the Helwig rear sway bar and Rancho gas shocks all around. Noticeable difference on the test drive - we'll see how it handles with the trailer in tow and go from there with any additional mods. Thanks for the advice.