Hey, I've been visiting yotatech for years, but I just joined today. I just got my first 99 Tacoma last summer. I don't do much high speed driving because of where I live, but i've noticed that when I do get up to speed the whole truck starts shaking. I've had some people tell me it's my allignment, but I thought I should ask you guys first. the weird thing about it is sometimes it'll be fine up to 75, but other times i can't go over 60 because it starts shaking so bad. it'll do it going both uphill and downhill, and it doesn't matter if it's hot or cold.

 

Thee Toyota gods hath smitten thou! Stop thine foolish actions and search thus exquisite "YotaTech" forum for similar symptoms!

U-joints? Alignment? Wheels/tires out of balance? Motor mounts gone awry?

 

Could be a number of factors. Tie rod (inner) wear is what springs to my mind as this is what I am having fixed soon. Have the alignment checked and they should be able to check your tie rods at the same time.