Seems most problems are making the bike go when it stops, my issue is a little different. The bike is an E Bicci, the issue is that when you set off the motor kicks in and starts to help as you expect, as soon as you freewheel it goes up to full assist and doesnt cut out until you brake. The maker has helpfully labeled all the wires so its easy to see it is all connected correctly. The speed sensor on the rear wheel has been replaced ( old one was broken) but the problem was happening before this. I can only think it is the controller that has gone wrong somehow. The ring magnet on the crank is fine and the LED on the sensor lights up. I am at a loss as to what could be wrong. Anyone have a similar experience or words of wisdom please ?