What Causes the Engine Malfunction Light to Illuminate and Acceleration to Feel Weak?

[VanDelilah]

This is caused by an engine malfunction. It is recommended to use a diagnostic tool to read the engine's fault codes. Below is an introduction to relevant information: 1. General Situation: Generally, when a car has been driven for 20,000 kilometers, attention should be paid to cleaning the throttle body. The fuel injectors should be cleaned between 20,000 to 30,000 kilometers. If the vehicle is in good condition and the fuel quality is high, cleaning can be delayed until 40,000 to 60,000 kilometers. 2. Three-Way Catalytic Converter: The three-way catalytic converter should be cleaned every 30,000 kilometers. If the vehicle is well-maintained with good fuel quality and condition, it can last until the end of the catalytic converter's lifespan (typically 30,000 to 50,000 kilometers). Additionally, cleaning the fuel injectors, throttle body, or three-way catalytic converter separately is not advisable. While cleaning the fuel injectors and throttle body individually can improve fuel efficiency and enhance power, the effect is not significant.