Sorry to post this in an F-150 area, but the expedition has the same chassis, so i guess it is ok.

We have a '99 2wd Expedition w/air springs in rear. And when going down the highway and minor bumps in the street, the whole truck will bounce. It is really bad on freeways. Now, I realize that the Expy is heavy, but is supposed to do this? How can I fix it. I was thinking of replacing the shocks with Rancho RS9000s because they are adjustable. Will they help take the bouncing out of the ride? We also tow a travel trailer, so will upgraded shocks help with that? Thanks

 

Well, it is a very short-wheelbase truck.

Have you checked the air pressure in the tires? I don't know of any aftermarket shocks for the rear of an "X" with LLS. For the front, personally, I like the Edelbrock shocks.



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1997 4x4 Expedition- 4.6L, true dual exhaust w/glass-packs, K&N air filter, SuperChip, airbox mods, Edelbrock shocks, 285/75R16 BFG ATs, 2000 "XLT" wheels, 4.10 gears, Auburn LS, Clarion In-dash CD player, Smitty Bilt push bars and nerf bars.

2000 4x2 F150 XLT Reg. Cab LWB- 5.4L, Tow Pkg, 3.55LS, CD player,Remote Keyless Entry, Sliding back glass, Special Appearance Pkg., tinted windows, Line-X bedliner, K&N air filter, SuperChip, airbox mods, 285/60R16 Goodyear Eagle GT IIs and Prime #155 wheels.

http://members.visualcities.com/NoMo

 

The tire pressures are at a perfect 44psi. I didn't know that normal aftermarket shocks won't work with the LLS. Thanks for pointing that out.
later