LWB Standard Cab Sway

[MorePower7701]

I have a 1990 Ranger LWB, Standard Cab, 4.0 2WD. I have replaced the Coil Springs, and rear Leaf Springs, all four Shocks, ball joints, everything else was fine. My truck drives great 80mph it's stays straight no vibrations like new, but hit a bump or turn a corner and it will sway like crazy. It seems like the springs are not stiff enough, but I have hauled several things, the truck seem to handle the load well. The frount coil springs are standard TRW stock replacements, the rear are aftermarket 5 leaf, not the OEM 4. With the truck parked you can jump on the bumper and the truck does not bounce much, but if you pull on the bed, the truck will sway like crazy, side to side.

What can I do to stiffen the suspension in this area?

 

[doorgunner]

Sounds like the suspension stuff is right, but something is loose--you need to look under the truck while a couple friends rock it side to side so you can give a better description of what you see & the guys can give you some advice

 

[PlumCrazy]

What kind of tires do you have in the rear? My truck handled like a dram until i put mu terrians on it. I even added a rear sway bar and it still sways. It is fine in a striaght line, but as soon as I hit a bump or turn it it sways like crazy. I replaced every bushing and spring and made sure it was alligned right too. The more aggressive the tire the worse it gets (I have really narrow Super Swampers on the back of a 2wd).

-plumcrazy