I have a radrunner2 almost 2 yrs old.
Last week I hit a bump and the motor did not work for a few seconds but came back on and rode home normally.

A few days later I hit a small bump and the 40A fuse died.

I have checked the connections.
No corrosion or anything.

The motor now randomly stops responding to pas or throttle. I have ran it with everything disconnected/unplugged except throttle, battery, controller. Then I tried only only connecting pas sensor, battery, controller.

Same result the motor randomly stops, then will reset and turn back on.

The motor just randomly stops running if you wait a few seconds or pedal backwards it comes back on. How can I know if it's the controller vs hub?
I have replaced the 40a fuse 3x this week while trying to troubleshoot.

SOLVED!
I believe I solved the intermittent motor cutout. After checking all the connections I pulled the rear wheel off. I opened the hub and a small amount of water came out. I believe this was causing the HALL sensors to reset the control...
I cleaned the motor, gears, and hub with a can of parts cleaner, a wire brush, and electrical-clean spray and regreased with red lithium grease. I did several miles this morning and it seems back to normal. If anyone else is having the motor intermittently shut off open the hub.
I bought the bike used so maybe the previous owner washed it before I arrived to purchase it...

Quote from: Panamakid on November 18, 2024, 07:13:51 AMI opened the hub and a small amount of water came out. ...

Thanks for coming back with the explanation.