What are the reasons for no acceleration when the throttle is fully pressed in fifth gear?

[OAllie]

Reasons for no acceleration when the throttle is fully pressed in fifth gear: Abnormal power output of the vehicle: Engine power is generated by the coordinated operation of the intake system, ignition system, and fuel system. If any component malfunctions, it may lead to a decrease in engine power, resulting in unresponsive throttle, body vibration, or smoke from the exhaust. Dirty or voltage-imbalanced throttle position sensor: If the throttle position sensor is dirty or has voltage imbalance, it can cause electronic throttle failure, leading to no acceleration even when the throttle is fully pressed. Poor fuel system or low-quality gasoline: The engine requires sufficient air for normal operation. If the intake system has leaks or blockages, pressing the accelerator may result in reduced power, inability to increase RPM, or body vibration. Using low-quality gasoline may cause fuel pump burnout, catalytic converter failure, or piston damage, directly affecting engine power and leading to engine stalling or inability to accelerate.