What are the symptoms of an electronic accelerator pedal failure?
1 Answers
When the accelerator pedal is damaged, it usually results in no response when accelerating, or very slow acceleration, and unstable idle speed. Oxygen Sensor: When the oxygen sensor fails, the ECU cannot obtain this information and thus does not know whether the amount of fuel injected is correct. An improper air-fuel ratio can lead to reduced engine power and increased emissions. Wheel Speed Sensor: Its main function is to collect the vehicle's speed to determine if there are signs of skidding. Therefore, a dedicated sensor is used to collect the wheel speed, usually installed on the hub of each wheel. Once the sensor fails, the ABS will become ineffective. Coolant Temperature Sensor: When the coolant temperature sensor fails, it often displays the temperature signal of a hot engine during a cold start. The ECU cannot receive the correct signal and can only supply a leaner air-fuel mixture to the engine. As a result, the engine may have difficulty starting when cold and may also experience unstable idle speed and insufficient acceleration power. Electronic Accelerator Pedal Position Sensor: When this sensor fails, the ECU cannot detect the throttle position signal and cannot obtain the correct position of the accelerator pedal. This can lead to a lack of engine acceleration power or even a complete inability to accelerate. Intake Pressure Sensor: As the name suggests, the intake pressure sensor detects a series of resistance and pressure changes corresponding to different engine speeds and loads, converting them into voltage signals for the ECU to adjust fuel injection and ignition timing. It is usually installed near the throttle body. If it fails, it can cause difficulties in ignition, unstable idle speed, and insufficient acceleration power.
