What Causes the Inability to Accelerate When Pressing the Gas Pedal?

2 Answers
StPhoebe
07/28/25 9:15pm
There are typically several reasons why a car's gas pedal fails to accelerate: 1. Engine carbon buildup issue. Excessive carbon buildup in the engine. As the car is used, the engine may accumulate sludge or other contaminants due to incomplete combustion, which can adhere to components and cause the engine to stall during operation. 2. Poor driving conditions. Adverse road conditions can hinder the smooth operation of various car components. Apart from internal parts, the inability to accelerate may also be related to driving conditions, such as frequent acceleration and deceleration in congested traffic, which can prevent car components from rotating promptly, leading to sluggish acceleration and weak starting. 3. Poor fuel quality. Low-quality fuel results in insufficient power generation during combustion. If the fuel quality is subpar, it can affect the car's fuel system and gasoline filter. Excessive impurities in the fuel can cause blockages, leading to poor fuel supply, preventing the engine from operating normally, and resulting in weak acceleration.
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DanielaAnn
08/12/25 1:55am
I just got a new car not long ago, and I was particularly worried when I encountered the issue of the throttle not accelerating, so I consulted a car-savvy friend. They told me that common causes include a clogged air filter restricting airflow, preventing the engine from getting enough air; or fuel system issues such as a blocked fuel filter or an aging fuel pump causing insufficient fuel supply; it could also be that the throttle pedal is stuck under the floor mat, so check for any obstructions. For electronic throttle models, there might be a sensor malfunction where the signal isn't reaching the computer. I've tried cleaning the air filter myself, but if the problem persists, it's best to have it checked by a professional shop to avoid sudden stalling on the road. Safety first, don't delay, and regular maintenance of air and fuel filters can reduce this risk.
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