What could be the reason when the car can start but there's no response when pressing the accelerator?
2 Answers
The car can start but there's no response when pressing the accelerator, which may be caused by a dirty throttle body. It is recommended to clean the throttle body first. Here is some relevant information about the car accelerator: 1. Introduction to the accelerator: The accelerator is a control device that regulates the engine power (thrust). 2. Introduction to the accelerator pedal: The accelerator pedal, also known as the gas pedal, is part of the car's fuel supply system. By controlling the amount of pedal depression, it regulates the throttle opening, controls the air intake, and the computer controls the fuel amount, thereby controlling the engine speed. 3. Reasons for the pedal getting stuck: It can be divided into three categories: human error, design defects, and insufficient craftsmanship.
This issue has occurred to me many times over years of driving. The car can start but the throttle doesn't respond, usually because the throttle valve is stuck—too much carbon buildup causes it to seize up. Alternatively, the throttle pedal sensor signal might be faulty, with poor circuit contact preventing signal transmission. Another possibility is an underperforming fuel system, such as insufficient fuel pump pressure or clogged injectors, starving the engine of fuel and preventing acceleration. Of course, a malfunctioning mass airflow sensor can also disrupt the air-fuel mixture, affecting throttle response. A simple fix is to turn off the engine and lightly press the throttle a few times to check for smooth movement. If it's tightly stuck, cleaning the throttle body yourself might help. However, most cases require professional diagnostic tools to check wiring and the ECU to prevent bigger failures. This problem is dangerous on the road, so it's best not to delay—take it straight to the repair shop.
