[whats77inaname]

Try the tires or tie rods. I always try for the easiest stuff first, so why don't you switch tires between the car with the shaking issue and the car that rides smooth? If it still wobbles, try the tie rods.

http://www.cartalk.com/content/columns/Archive/2001/December/03.html

This www.shotimes.com/SHO3tierods.html is a good article regarding tie rods, although all does not apply to our car. The basic diagnosis of bad parts is the same, however. Most places will inspect them for free, so go to 3 places and see if they all come to the same conclusion. The outer are not that hard to replace, as I did them on my Integra once. Took about 30 mins for both sides. You'll have to get it aligned afterwards.

 

[whats77inaname]

Did you switch the tires w/the other car?

 

[whats77inaname]

VSS=Vehicle speed sensor, correct? I dunno. My method of thinking is that it has something to do with a rotating mass, and my experiences with shakes at high speeds is that it is usually the tires. But I don't know everything, so hell, it could be the VSS. If it is, then you've helped me learn something new, so keep me posted!