Thanks for the replies.
I can not find any binds or broken gears. it pedals fine and the wheel spins freely by hand without noise.
I did not open the motor. If it did drop a magnet, or a sensor is that a fix I can easily do or is a wheel replacement easier
I have a Voila mart 48v 1000W with only 200 miles on it. I pretty much only rode it on pavement and it worked great until... I decided to ride down some train tracks. I was going pretty slow and only made it about 300' of bounching up and down before a grinding noise and no forward motion...