Ok well the other day while driving down the highway i set my cruise to about 73. Well i glanced down adn it was jumping to 70 and back to 75. If i hit the top of the dash it starts jumping really fast all over the place between 70-75.. it only does it at cruising at those speeds... its a 2000.... what going on?

 

Nothing. A speedo won't hold EXACTLY where you set it. It will stay close.