I am submitting a formal complaint regarding a stalling issue with my 2023 Suzuki GSX-S1000GT+. Issue Summary: The motorcycle starts normally when cold. However, once I begin riding and pull in the clutch to stop (such as at a stop sign or traffic light), the engine stalls unexpectedly. The stallin
... g occurs intermittently during this phase and continues until the engine reaches full operating temperature. At that point, the issue no longer occurs. When the engine stalls and I attempt to restart it, it will not restart unless I apply throttle manually. Simply pressing the starter without throttle input results in a no-start condition. Key Observations: Cold Start: Starts up as designed. Initial Riding Phase: Engine stalls when pulling in the clutch to stop. Restart Difficulty: Engine will not restart unless throttle is applied manually. Post Warm-Up: Once at operating temperature, the issue is no longer present. Performance: The motorcycle runs smoothly under load and throttle aside from this stalling condition. Diagnostics: No DTCs are stored and no check engine light is illuminated. Safety Concern: This issue poses a serious safety risk. The stalling is intermittent and unpredictable, which can leave the motorcycle incapacitated in traffic or at intersections. This creates a hazardous situation for the rider, especially when the engine fails to restart without applying throttle—a detail that could easily be overlooked during a critical moment. Technical Assessment: Based on my professional experience, this appears to be a calibration or software logic issue rather than a component failure. The ECU does not seem to manage throttle plate position or idle control properly during transitional warm-up phases. As the motorcycle accumulates mileage, the issue has become more noticeable, suggesting a drift in adaptive values or insufficient compensation in the ECU’s warm-up strategy.Read more