I went to the mechanics shop and they lifted my car because my steering wheel was shaking violently after 50mph. They told me that I needed new rack and pinion mount bushings. After this I called the Honda parts dealership and explained this to them. The man I was speaking with told me I needed either four small bushings where they mount at the stearing collumn of one big bushing attached (or near, idk) to a U-shaped bracket. which one do I need??

The most common answer is the brake rotors are out of round you nee to pull them and take them to a brake shop or machine shop to have them turned. Good luck Mike L.

Take it back to the dealer. The problem could be a Constant Velocity Joint wearing out.
Replacing the rack and pinion is an exceedingly expensive repair. Replacing a CV joint or axle is significantly less expensive.
It sounds as if your dealer is honest.

Try a new steering damper

I think u have meet a set of Auto bandits. Think u need to a real mechanic who will give u an honest answer. I can tell o lot of stuff what can can cause bc that noise. But that may be be coming a waste of time.

1. out of balance tire because it sounds speed spacific.
2. worst of all! Loose lug nuts or possibly loose spindle nut. (you will need to lift the wheel off the ground to tell)
3. worn linkages i.e. ball joints, steering linkage, anything that would allow play in the front wheels.

THE APPLICATION OF FORCE WITH A LONG BAR TO THE SUSPENSION WHILE IT IS JUST LIFTED OFF THE GROUND WILL SHOW ANY "MOVEMENT" IN THE TIE RODS OR BALL JOINTS.

VANS HAVE A LOT OF "TOE IN" WHICH PLOWS THE VEHICLE DOWN THE ROAD MAKING TIRE WEAR ON THE OUTER EDGES. YOU COULD BE FEELING THIS AND SWAPPING THE TIRES REAR TO FRONT WILL HELP.

I FOUND LESS TOE IN MADE MY VAN A LITTLE "SKIDDISH" BUT SAVED THE TIRES.

front brake rotors are warped.
replace front rotors only unless the pads are thin then do pads also.

thank you
jm

This violent shaking where you can stop it by holding the steering wheel in my experience is due to a BAD rack and pinion. Replace rack and that will solve this problem. Good Luck and thanks for using FIX YA

I believe you need your disk brake rotors turned to be true again or have them replaced. Whe you use your brakes a lot and kit puddles of cold water then it will warp the rotors which will cause the violent shaking. You may not feel it in the brake pedal even if it is warped rotors. If you don't think you have warped rotors then you should be very careful driving it because it will probably be in the steering sector arm or the idler arm on the steering shaft.
Dale

make sure the wheels are straight take off the steering wheel and put it back on straight then report the mechanic to the motor traders association how a mechanic returns your car like that i dont know glenn.........