What causes twin ibeams to bounce and shake?

Question

Severe shaking, one wheel, sometimes brought on by using the brakes, but not always. It feels like the wheel is oscillating and also bouncing vertically.. 1994 E-150

Answer 1

first check the tires and make sure it is not out of round(jack up the side that bounces the worst and hold something like a ruler as a visual guide and spin the tire and observe it) if is good and round. Then it is the shock- replace it, drive it around. once in a while it may not cure that problem then replace the bushings

Answer 2

Out of balance or out of round tires. Brakes would cause a vibration not a bounce. Tie rod ends or worn king pins will cause a clunking noise.

Answer 3

Bad shocks or worn bushing's or both