I have a 97 f150 that will start in park as soon as i shift into any other gear the truck takes off forward in reverse,neutral,and others. When in reverse truck will go forward for about 100feet then reverse will kick in making the wheels spin backward then going forward again. After putting the truck in any other gear besides park after being started, if you try to put it back in park the truck will still move forward for a while. i dont know what is going on. Does anyone have any idea what is going on?

 

It sounds like there is something broken in the valve body.