What could be the reason for no response when pressing the accelerator in a 2013 Excelle?
2 Answers
Reasons for no response when pressing the accelerator pedal: 1. Transmission failure: If there is an issue with the transmission, the accelerator may not depress properly, and the engine speed may suddenly increase from 2000 RPM to 4000 RPM. This happens because the power is cut off, causing the engine to suddenly have no load, resulting in fluctuations in RPM. Generally, engine issues are related to problems with the transmission control system. 2. Throttle failure: If the vehicle does not respond or shakes when the accelerator pedal is pressed, it is likely due to a fault in the throttle component, such as a stuck valve plate or a malfunctioning throttle position sensor. 3. Brake override system: Modern vehicles are equipped with a brake override system, which means that if both the brake pedal and accelerator pedal are pressed simultaneously, the brake pedal takes priority, causing the accelerator to become unresponsive. Check if the floor mat is properly secured. If the mat accidentally touches the brake pedal, even slightly, it may trigger a brake signal, activating the brake override system.
I encountered an issue with no response when pressing the accelerator while driving my Excelle, which is quite common. This is usually caused by a faulty throttle pedal sensor or carbon buildup leading to throttle valve sticking, or poor signal transmission in the electronic throttle system. If the sensor fails, the engine control unit won't receive commands, and the car won't accelerate. Another reason could be insufficient fuel pump pressure or blockage, causing fuel supply interruption. I once experienced this suddenly while driving in the city; pulling over and restarting the car helped temporarily, but it's best to regularly clean the throttle valve to prevent carbon buildup. Also, check if the mass airflow sensor is contaminated, as it can affect the air-fuel mixture ratio. In short, such faults can easily cause safety hazards, like delayed response during overtaking, so it's important to visit a professional workshop promptly to diagnose error codes and perform repairs.
