What happens when a car's throttle position sensor fails?

[KathrynAnn]

Here are the symptoms of a damaged throttle position sensor: 1. Poor idle contact: No idle signal, resulting in no idle or unstable idle speed. 2. Poor no-load contact: No full-load signal input, leading to no high speed or difficulty in acceleration. Below is extended information about the causes of throttle position sensor failure: 1. Terminal corrosion: Poor contact, low voltage or no conduction, causing the engine to stall easily or have difficulty starting. 2. Initial position misalignment: Output voltage too high or too low, resulting in unstable idle speed, either too high or too low. 3. Coating failure: Resistance change causes output voltage deviation, leading to jerky starts and poor acceleration. 4. Excessive carbon buildup at the throttle: Incomplete closure affects output voltage and flow values, causing inaccurate air-fuel ratio and unstable idle speed.