My 2000 excursion wants to drift left and right i changed the sway bar arm from the stearing to the pitmant ard helped some but still does it

check the ball joints

Sway bar links, sway bar bushings, or the sway bar is broken. I would go back and retrieve my money. You would think with this problem(I'm sure you told them), they would have caught this. The first one probably aligned it, the others, just charged you. You have this in front and back. Drift is sway. I would have checked both.

could be cv joint but jack up wheels and move tire up down and left right up down if play check ball joints /anti-sway bar bushings--------if play left to right than check idler arms and steering system /and anti sway bar bushings

A sway bar is a suspension piece that keeps the left and right side of vehicle connected to help with turns. They are held together through sway bar links at each end, which are fairly common to break or rattle over bumps.

I dont see how it could be too long, if its the one the car came with. The sway bar would not be in the owners manual. Its in front and it goes from left front wheel to right front wheel. it will have a connector link at each end to connect to the lower arm. Sometimes it called the Anti-Sway bar or Stabilizer bar.

check the sway bar links. the sway bar is the long solid bar that goes to each tire up front. the links are what connects the bar to the lower control arm. this is what controls the vehicle from swaying or drifting

Sounds like an Idle arm or pitman arm.

is your van 4WD, AWD, or rear wheel drive? if it is 4WD or AWD, the front axle seals might be going bad. PLEASE RATE MY ANSWER.

yes it is the sway bar are the link kits broken that tie the swat bar to the lower control arm if they are replace both sides

The front stabilizer shaft (sometimes called a sway bar) is mounted to the top rear of the frame and to the lower control arm. The shaft is attached to the frame with clamps and rubber insulators and to the control arms with insulator links.

Try http://www.autozone.com/shopping/repairGuide.htm