Why is there no response when pressing the accelerator pedal while idling normally?
1 Answers
When a vehicle shows no response to pressing the accelerator pedal and only idles, there can be multiple factors causing this issue. It could be due to a damaged throttle body, a faulty accelerator cable, or poor contact in other sensors such as the air flow meter. If there is no response no matter how you press the accelerator, it is advisable to call for a tow truck or roadside assistance service. It is recommended that the owner visit a repair shop to use a specialized diagnostic tool to read the vehicle's fault codes and diagnose the issue based on these codes. If the issue is not related to the electronic throttle body, it could be problems with the engine's intake, oil, or ignition system. Throttle Body: If the throttle body is damaged, it should be replaced immediately. The throttle body is often referred to as the engine's throat and is installed on the engine's intake pipe. When the driver presses the accelerator pedal, the throttle opening increases, allowing more air to enter the engine. When pressing the accelerator, the cable moves the throttle body, which is essentially the accelerator. The throttle body has a position sensor, and the control unit uses the signal from this sensor to determine the throttle opening. It then calculates the corresponding signal voltage and, based on this signal, determines the vehicle's fuel injection amount. If the throttle position sensor is too dirty or the voltage is unbalanced, the electronic throttle may fail, preventing the accelerator from reaching full speed. Sensor Malfunction: Poor contact in the resistor strip inside the accelerator pedal or potential faults in the electronic throttle sensor motor may occur. These issues require professional diagnosis at a 4S shop or repair facility to identify the cause and carry out the necessary repairs. Engine: For the engine to operate normally, it requires sufficient air intake. If there is a leak or blockage in the intake system, the vehicle's power will drop after filling up with fuel, the speed will not increase, and the body may shake. Faults in ignition components such as the distributor, ignition coil, or high-voltage wires—due to leaks, aging, or poor quality—can cause poor ignition during acceleration, leading to no response.
