What are the symptoms of a faulty throttle position sensor?
2 Answers
Throttle position sensor failure can cause symptoms such as engine shaking. Below is an introduction to the symptoms of a faulty throttle position sensor: 1. Unstable idle: A damaged throttle position sensor can cause engine shaking and unstable idle. The most obvious symptom is unstable idle, and you may feel weak power during rapid acceleration or the vehicle may not accelerate properly. 2. Failure to start the car: The main function of the throttle position sensor is to detect whether the engine is in idle condition or under load, whether it is accelerating or decelerating. Severe damage may prevent the engine from starting.
My car recently had this issue - it felt noticeably sluggish when accelerating, even with the pedal floored, like the engine was being held back by something. At red lights idling, the tachometer needle would jump up and down erratically, making the whole car shake. Once it almost stalled at an intersection, which was really scary. The check engine light was glaring yellow on the dashboard, and fuel consumption increased by over 20%. A full tank would barely last a few days before the warning light came on. After diagnostics at the repair shop, they found faulty sensor codes - replacing it immediately restored crisp throttle response.
