Most RC cars are equipped with a temperature lockout system, where when the motor reaches a certain temperature the ESC shuts off and will not let you turn it back on until it cools down enough. For brushed motors, you do not want to exceed 180 degrees Fahrenheit, for brushless, you do not want to exceed 160 degrees Fahrenheit.

BRUSHED MOTORS If a brushed motor is overheating it may be time for replacing, brushed motors can typically not be rebuilt or have internal parts replaced. They also typically are not built or positioned in a way where they can have a heat-sync or cooling fan installed.

BRUSHLESS MOTORS If a brushless motor is overheating it may be multiple things. If it does not have a heat-sync or cooling fan, we recommend installing those first. If it is still overheating, the internal bearings may need to be replaced, as they are causing drag and making the motor work harder to achieve the same speed. In some cases, the entire motor may need to be replaced, if the magnets inside the motor are not functioning properly anymore.

If a servo is cutting out, or unable to find center it may need to be replaced among other things. If the servo is cutting out, this may be a receiver issue, check the wiring to the receiver and make sure there are no cut or frayed wires. One way to determine if it is the receiver or the servo is to plug the servo into a different port on the receiver, if the problem persists it is more than likely the servo. What happens to servos is they begin to overheat, which shorts them out and causes them to fail, overheating servos are typically the cause of factory error or wearing internal parts. Servos typically cannot have their internal parts replaced and must be replaced entirely.

If a servo is unable to find center, it needs replaced. One way to test this is to hold the vehicles steer-wheels up in the air and force them to move slightly, if they move back and forth rapidly, the servo has lost center.

If the vehicle has been aligned mechanically and electronically and is still unable to travel perfectly straight that is a sign of a servo that is bad or going bad.