11. When you push the gas pedal down, sometimes it works and other times it does not, or sometimes it gets stuck.

You have a problem with the pedal switch.

Remove the gas pedal switch holder, you can determine whether you have 3 wires (BIG YELLOW, BIG RED, and small yellow) or 4 wires (Two yellow, Two purple) connected to the gas pedal switch.

Do a Pedal Switch Test (3 wire case)

Do a Pedal Switch Test (4 wire case)

If the pedal switch is no good, you need to replace the pedal switch. Click here for detail.

If the pedal switch is good, you need to replace the controller box and main wire. Click here for detail.