Assuming everything is mechanical okay on your vehicle, here is something to check...

- Fuel powered R/C vehicles still require electrical power to control the electronics (servos and receiver). It is possible after an hour of running that your RECEIVER BATTERY is dead or at low voltage. If the receiver battery is too low, it won't have enough voltage to operate the steering or throttle servos.

Let us know if you have already checked to see if the receiver battery is okay, or if it needed to be recharged.