The ECM is another term for the ECU but is often used interchangeably. It focuses specifically on controlling the engine's operation, including fuel injection, ignition timing, and emissions control to ensure proper functioning and efficiency. The PCM is a more comprehensive control module that oversees the engine, transmission, and other powertrain components. It regulates fuel delivery, spark timing, emissions, and transmission shifting. PCM problems can result from faulty wiring, softw...

The ECM is another term for the ECU but is often used interchangeably. It focuses specifically on controlling the engine's operation, including fuel injection, ignition timing, and emissions control to ensure proper functioning and efficiency. The PCM is a more comprehensive control module that oversees the engine, transmission, and other powertrain components. It regulates fuel delivery, spark timing, emissions, and transmission shifting. PCM problems can result from faulty wiring, softw...

Check engine light or other warning lights Poor fuel efficiency Engine misfires or stalling Unresponsive acceleration Difficulty starting the car ...

Check engine light or other warning lights Poor fuel efficiency Engine misfires or stalling Unresponsive acceleration Difficulty starting the car ...