When my transmission is in low, it's in low. When it's in second it'll shift from 1st to 2nd. In drive it's in low. Could it be the kick down switch on the pedal? Because it doesn't have one, the throttle is on the handlebars attached to a Kawasaki front end. Or could it be something internal. This is not in a car it's in a trike. Any help will be appreciated. The radiator is out of an MGB.