Why does the car speed not increase even when the accelerator is fully pressed?

2 Answers
DelIsabelle
07/29/25 5:38am
The reasons why the car speed does not increase even when the accelerator is fully pressed are: 1. The accelerator pedal is blocked by the floor mat. If the floor mat is improperly positioned or the model does not match the vehicle, the accelerator pedal may be blocked, preventing acceleration. In this case, simply reposition the floor mat; 2. Accelerator pedal malfunction. If the accelerator pedal cable fails or the throttle position sensor malfunctions, the accelerator will not work properly. It is necessary to visit a repair shop for professional inspection; 3. Ignition system failure. If the car's spark plugs are damaged, the fuel in the cylinders cannot burn properly, resulting in weak acceleration. In this case, replace the spark plugs with new ones.
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MacAlexander
08/12/25 9:11am
After driving for so many years, I've encountered situations several times where the car wouldn't accelerate even when the throttle was floored. Common causes include issues with the ignition system, such as worn-out spark plugs or severe carbon buildup, leading to poor engine ignition and reduced power output. It could also be due to a clogged fuel filter causing inadequate fuel injection, leaving the car 'hungry' and sluggish. A faulty mass airflow sensor can mislead the computer into giving incorrect throttle responses. Sticking in the electronic throttle control system is another frequent culprit. It's essential to get it checked promptly, as forcing the car to drive not only increases fuel consumption but may also damage the engine. Next time during maintenance, it's advisable to have the technician check the ignition coil voltage and inspect the fuel line for blockages.
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