Thanks for the answer Geodav, and btw, I have watched some of your videos on how to set up a vehicle too 
they are great!
I have checked the root bone, and it is in 0,0,0 position, will attach a picture to show.
I will keep on trying out different things, see if I can get it to work.
The attachments didn’t work, here is a link instead http://postimg.org/image/9r70p0rg5/