There are many problems related to a vehicle’s engine control system that can cause drivability concerns. To ensure an engine runs efficiently, proper operation of sensors and actuators is crucial in controlling the air/fuel mixture that enters the engine. It may be challenging for a technician to find a place to start their troubleshooting process. When performing engine control diagnostics, a fuel delivery system inspection can help determine the cause of a lean condition. An automotive oscilloscope can visualize intermittent and complex problems by displaying patterns of sensors or actuators on a graph.
Checking the ignition system and the related components is valuable when a misfire is suspected, especially under rapid acceleration. When performing variable valve timing (VVT) diagnostics, technicians should verify engine timing and oil pressure, especially if a vehicle is experiencing a lack of power. Service guidelines and best practices surrounding gasoline direct injection (GDI) system repairs are covered to ensure technicians are safe when working on these systems. The following tips are intended to reduce the time spent troubleshooting and improve effectiveness when using diagnostic tools for engine control faults.
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