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What is the reason for the Envision not responding when accelerating?

2 Answers

DeAdaline

07/29/25 1:19pm

Reasons for the Envision not responding when accelerating: It may be due to issues with the accelerator pedal or transmission. Below is a detailed explanation of the possible causes: Accelerator pedal malfunction: The accelerator is a control device that regulates engine power. The accelerator pedal is directly related to the operation of the accelerator. Therefore, the inability to gain speed when pressing the accelerator could be due to a faulty accelerator pedal, which can be directly replaced. Transmission issues: The phenomenon of the car not accelerating when pressing the accelerator could be caused by a transmission malfunction. It is recommended to visit a 4S shop for repairs.

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HopeFitz

08/14/25 3:34am

Last month when I was driving my Envision back to my hometown, I encountered an unresponsive acceleration issue, which was really nerve-wracking at the time. The problem might have been caused by excessive carbon buildup in the throttle body getting stuck—after all, five years of driving can lead to carbon deposits affecting air intake. Fuel pump failures are also quite common; when there's insufficient fuel pressure, you can floor the accelerator but still feel no power. Another easily overlooked issue is a faulty throttle pedal sensor, where the signal fails to reach the engine control unit. I remember once experiencing this on the highway—I slowly coasted to the emergency lane, restarted the car, and it worked fine again. But for safety, I still went to the repair shop. They used a diagnostic tool and found the transmission control unit program had frozen; it only returned to normal after a software reset. Such issues shouldn’t be delayed, as power system-related safety hazards could lead to major accidents at any moment.

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