This might seem a silly question but here goes.
Up to what speed would you expect my auto box to 'kick down' ?
It does not seem to want to change gear above about 50 mph, like when joining a motorway where you want to speed up to join the flow of traffic. I have to wait until it picks up speed in fourth. Gear changes are normally ok, with the occassional 'jerky' one between 1st and 2nd.
Any ideas?