-it seems that those three little letters strike fear into many a promoter, track owner, or sanction head whenever they hear it. ECU stands for Engine Control Unit. Also called an ECM (Engine Control ...

While your check engine light is obviously meant for engine issues, it can often give you clues to problems in other parts of ...

(iSeeCars) – There are a lot of mechanical and electrical parts that work together to help your car run smoothly. The electronic control module (ECM) or powertrain control module (PCM) is the main ...