Controllers and electrics

The speed controller and its supporting electrics on a golf buggy translate pedal movement into drive, and this category covers the whole chain: throttle input sensors such as the Club Car MCOR and the E-Z-GO inductive throttle sensor, jerky or delayed acceleration, controller failure and overheating, limp mode, reset procedures by brand, battery meters that read wrongly, and alarms that beep while driving. Erratic behaviour in this chain often has an ordinary cause. Jerky acceleration is as likely to be a loose or corroded battery connection as a failing sensor, so clean and tighten the main connections before condemning parts. A worn throttle sensor typically shows as a scratchy, inconsistent signal, and on many vehicles a repeatable fault can be narrowed down with a multimeter at the input wiring. Several controller families also report their own faults: Curtis controllers, for example, flash a status light in a repeating pattern that identifies the failure, and limp mode, which caps the vehicle at walking pace, is a deliberate protection state rather than a breakdown. Treat the controller itself with caution. Its capacitors can hold a charge after the pack is disconnected, and the main B plus and B minus terminals carry full pack current, so wait several minutes after disconnecting and keep tools clear. Sensor cleaning, connection checks and resets are owner territory; controller replacement, precharge faults and anything accompanied by a burning smell are jobs for a Hawke engineer.