What causes the car to not accelerate when pressing the gas pedal?
2 Answers
Low fuel pressure or air in the fuel line, poor air flow meter signal in the circuit, faulty throttle position sensor signal, damaged ignition coil, delayed ignition timing, and incorrect spark plug gap (either too large or too small) can all cause the car to not accelerate when stepping on the gas pedal. Additional Information: 1. The gas pedal, also known as the "throttle" or "accelerator," is a control device that regulates engine power (thrust). In piston aircraft engines, the gas pedal controls the throttle opening of the carburetor to adjust the cylinder's filling volume, thereby determining the engine's output power. 2. In gas turbine engines, the gas pedal regulates the metered fuel flow of the fuel controller, thus determining the thrust produced by the engine. The throttle position is controlled by the pilot in the cockpit via the throttle lever, which transmits commands through components such as pushrods, rockers, torque tubes, cables, pulleys, and sector gears to the carburetor or fuel controller on the engine. 3. In aircraft, pushing the throttle lever forward always increases power (thrust), while pulling it back reduces power (thrust). The gas pedal, also called the accelerator pedal, is part of the car's fuel supply system. By controlling the pedal's depression, it adjusts the engine's throttle opening, regulates the air intake, and allows the computer to control the fuel amount, thereby managing the engine's speed.
I've been driving for decades and have encountered the issue of the accelerator not delivering power many times. The most common cause is a clogged fuel system, such as dirt stuck in the fuel pump or fuel filter, preventing fuel from reaching the engine, which then feels sluggish. Another possibility is a dirty throttle body where accumulated dust affects the air intake into the engine. Faulty sensors, like a malfunctioning throttle position sensor or intake pressure sensor, can also cause the computer control to act up, preventing the car from accelerating. If this happens suddenly on the highway, it's extremely dangerous—you should pull over immediately and turn on the hazard lights. Regular maintenance, like cleaning the throttle body and replacing the air filter every few thousand kilometers, is crucial. I once had this issue and found out at the repair shop that a sensor was burnt out—it cost me over 200 yuan to fix.
