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What Causes the Car to Not Accelerate When Pressing the Gas Pedal?

1 Answers

BethanyDella

07/29/25 4:46pm

Here are the reasons why the car does not accelerate when pressing the gas pedal: 1. When the gas pedal is pressed, the throttle cable moves the throttle valve (also known as the accelerator). The throttle valve is equipped with a position sensor, and the control unit determines the throttle opening based on the signal from this sensor, calculates the corresponding signal voltage, and then determines the fuel injection volume accordingly. If the throttle position sensor is dirty or the voltage is imbalanced, it can cause an electronic throttle malfunction, resulting in the car not accelerating even when the pedal is fully pressed. 2. If electronic throttle issues are ruled out, the problem may lie in one of the three systems: engine intake, fuel delivery, or ignition. The throttle position sensor signal is crucial for proper engine operation, which requires sufficient air. If there is a leak or blockage in the intake system, pressing the gas pedal may lead to reduced power, inability to increase RPM, and vehicle shaking. 3. The fuel system is vital for the engine. Using low-quality gasoline can damage components such as the fuel pump, catalytic converter, or pistons, directly affecting engine power and potentially causing stalling or failure to accelerate.

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