What are the reasons for a heavy accelerator pedal?
2 Answers
The reasons for a heavy accelerator pedal are: 1. The spring under the accelerator pedal is too stiff; 2. The spring's elasticity is too strong; 3. The fuel filter is clogged; 4. The spark plugs are damaged; 5. There is an issue with the throttle. The accelerator pedal is part of the car's fuel supply system. By controlling the amount of pedal pressure, it regulates the opening of the engine throttle, controlling the air intake and engine speed. The correct method to press the accelerator pedal is: 1. Place the heel of the right foot on the floor of the driver's compartment as a pivot; 2. Gently press the ball of the foot on the accelerator pedal, using the ankle joint's extension and flexion movements to press down or release; 3. When releasing the accelerator pedal, apply force gently, ensuring a light press and slow release.
Last time I was driving, the accelerator pedal suddenly became very stiff and extremely hard to press down. I suspect it might be mechanical components under the pedal getting stuck, like rusted or dry springs or linkages, which is common in older cars. Another possibility is a dirty air filter clogging the intake, making the engine struggle to breathe, requiring more force on the pedal. The check is simple: after parking, test if the pedal returns smoothly; if it's stiff, adding some lubricant might solve it. If not, it could be an issue with the electronic throttle sensor, causing slow response due to signal confusion. For safety, I plan to visit the 4S shop soon to have the system scanned by a technician, rather than risking an accident. Remember to maintain regular servicing, like cleaning the throttle body every 5,000 km, to prevent such issues.
