What Causes the MG 5 to Make Abnormal Noises When Accelerating and Lack Power?
2 Answers
Lack of power when pressing the accelerator may be caused by issues with the car's accelerator pedal, air intake system leaks, or poor fuel quality. The specific reasons are as follows: Issues with the accelerator pedal: When the accelerator is pressed, the cable drives the throttle, which is essentially the accelerator. The throttle has a position sensor, and the control unit determines the throttle opening based on the position sensor signal. It then calculates the corresponding signal voltage and finally uses these signals to determine the vehicle's fuel injection volume. If the throttle position sensor is dirty or the voltage is imbalanced, it can lead to electronic throttle failure, resulting in the situation where the accelerator is pressed to the floor but the speed does not increase. Air intake system leaks: The engine requires sufficient air to operate normally. If there are leaks or blockages in the air intake system, insufficient air will lead to incomplete combustion, causing such faults in the car. Poor-quality gasoline: This may cause the fuel pump to burn out, catalytic converter failure, or piston issues, affecting the engine's power and potentially leading to engine stalling.
The MG 5 experiencing abnormal noise when refueling and lack of power during acceleration is likely related to several common fault points. The source of the abnormal noise is usually aging components in the engine compartment, such as loose belts or damaged bearings, which generate friction noise. The most common cause of lack of power during acceleration is an issue with the fuel supply system, such as inefficient fuel pumps or clogged fuel injectors, preventing proper fuel delivery to the engine. Additionally, ignition system problems, like carbon buildup on spark plugs or faulty ignition coils, can also lead to uneven power output. I recommend starting with simple checks, such as replacing the spark plugs or air filter. If the issue persists, inspect the transmission fluid level, as low levels may cause noise and power loss. Don’t ignore these minor issues—prolonged neglect could lead to more severe engine damage. It’s advisable to have a professional repair shop conduct a comprehensive diagnosis.
