What are the symptoms of a faulty electronic throttle in a car?
2 Answers
The symptoms of a faulty electronic throttle in a car are: 1. The engine warning light comes on. When the engine warning light is illuminated, it is important to inspect the car promptly to prevent potential safety hazards; 2. Unstable engine idle speed, where the car's idle speed fluctuates between high and low, is also a sign of electronic throttle failure; 3. Weak acceleration, when the car does not respond to throttle input or exhibits significantly reduced power, is usually caused by a faulty electronic throttle or excessive carbon buildup; 4. Difficulty starting the car is generally caused by electronic throttle failure, low engine temperature, or faulty spark plugs. The specific cause should be diagnosed at a 4S shop.
I've experienced electronic throttle failure before. The car responds sluggishly when driving, feeling powerless during acceleration like stepping on cotton. This is particularly noticeable during startup or low-speed driving. At idle, the engine RPM fluctuates erratically, sometimes with severe vibrations, and it may even stall right after starting, which is quite frustrating. The illuminated check engine light is also a warning sign, usually indicating the control system has detected issues such as faulty sensor signals or throttle sticking. In such cases, fuel consumption suddenly increases because the engine's efficiency drops, and prolonged issues may damage other components. It's advisable to first check if the air filter is dirty or if there's carbon buildup. If necessary, visit a professional repair shop for diagnosis—safety always comes first.
