What are the symptoms of a faulty throttle body in a Chery QQ?
3 Answers
The symptoms of a faulty throttle body in a Chery QQ include the car failing to start, or after starting, the throttle not returning to position when the accelerator is pressed, emitting black smoke, increased fuel consumption, high idle speed, and unsteady acceleration. Introduction to Electronic Throttle Body: The electronic throttle body is a crucial control component of a car engine. It consists of the engine, speed sensor, throttle body, etc. The use of an electronic throttle control system allows for precise control of the throttle opening. Function of the Throttle Body: The throttle body controls the engine's air intake, regulating the amount of air entering the engine. It is a controllable valve that determines the engine's operating conditions. After entering the intake manifold, the air mixes with gasoline (the mixing location varies by car model) to form a combustible mixture, which then participates in combustion to perform work. The driver operates the throttle opening by pressing the accelerator pedal.
When driving my Chery QQ, I encountered a throttle issue with quite noticeable symptoms. After starting the car, the idle speed was extremely unstable, with RPM fluctuating up and down, making the engine feel like it was shaking, as if gasping for breath. Accelerating was even more frustrating—stepping on the gas pedal felt weak, the car responded sluggishly, and sometimes it would suddenly jerk forward, almost startling me. What was even stranger was the sudden increase in fuel consumption. Previously, a full tank could last 500 kilometers, but now it dropped to just over 400. Additionally, the engine warning light on the dashboard occasionally lit up, especially frequently during cold starts. After some research, I learned that carbon buildup or sticking in the throttle body was causing poor airflow, which could damage the engine over time. So, I immediately went for a cleaning—otherwise, the problem would have worsened, affecting both the safety and comfort of my daily commute. My advice: if you experience similar issues, don’t delay—get it checked and repaired as soon as possible.
My Chery QQ had a throttle body failure recently, and the symptoms were extremely annoying. During daily driving, the car was particularly hard to control, with sluggish and weak acceleration—stepping on the gas pedal felt like stepping on cotton. Sometimes, when idling at a red light, I suddenly noticed the RPM fluctuating up and down, accompanied by slight body vibrations, as if the car was dancing. On one business trip on the highway, the car jerked violently during acceleration, nearly causing a rear-end collision. Fuel consumption also increased noticeably, and my friends thought my driving habits had changed, but it wasn’t my fault at all. The worst part was the occasional failure to start, requiring multiple attempts. These symptoms made me realize the throttle body issue couldn’t be ignored—it might be due to carbon buildup or sensor failure. In severe cases, it could lead to engine knocking and excessive emissions, affecting environmental standards. Timely repairs are crucial for safety.
