Thanks for the reply. I tried a second locomotive that I have just to be sure that it was the controller and it ran at full throttle as well. I already scheduled the repair with Bachmann so she will be on her way for repair once again. It really makes me wonder about the long term reliability of these EZ controllers? Hoping it's just bad luck on my part. I am very pleased with the system Bachmann has in place for warranty repair just wish shipping was included.