Why does the car not accelerate when the throttle is fully pressed?
2 Answers
The reasons why the car does not accelerate when the throttle is fully pressed are as follows: 1. The accelerator pedal is blocked by the floor mat: If the floor mat is improperly placed or the model does not match the vehicle, the accelerator pedal may be blocked, preventing the car from accelerating. In this case, simply reposition the floor mat. 2. Accelerator pedal malfunction: If the accelerator pedal cable or the throttle position sensor fails, the accelerator will not function properly. In such cases, it is necessary to consult a professional at a repair shop. 3. Ignition system failure: If the car's spark plugs are damaged, the fuel in the cylinders cannot burn properly, leading to weak acceleration. In this situation, the spark plugs need to be replaced.
I just experienced this issue - the car would roar loudly when flooring the accelerator but refused to move forward, which was utterly frustrating. After some research, I found the most common causes are fuel delivery problems, like a gasoline filter clogged like a sieve or a failing fuel pump. Another possibility is blocked intake passages - if the air filter is thick enough to be a quilt, the engine can't breathe properly to generate power. Exhaust restrictions are equally problematic; a clogged catalytic converter is like trying to run while wearing a mask. Ignition system issues such as aging ignition coils or eroded spark plugs lead to incomplete combustion, directly reducing power output. The most troublesome is clutch slippage, especially common in older automatic transmissions - the RPMs skyrocket without corresponding acceleration as the gears grind uselessly. Address these problems immediately, as poor acceleration poses serious safety risks on the road.
