Auto Systems and Repair: Throttle Body

Symptoms of Wear or Failure

  • Stalling problems
  • Engine may run roughly
  • Illumination of the Check Engine Light
  • Gas pedal hard to push as a result of a worn throttle shaft

Related Repair Advice

  • Residue build up on the throttle bore can result in lower than normal engine idle and engine stalling, especially after battery replacement
  • Newer vehicles are using an electronically-controlled throttle body in place of the older cable-operated system
  • When replacing an electronic throttle body, the related connectors and wiring should be thoroughly inspected