What problems can a faulty throttle body cause in a car?

[LaJesse]

A faulty throttle body can cause the following problems in a car: unstable engine speed, persistently high idle speed, difficulty in engine starting, unstable engine idle, and no idle speed. Below is relevant information about the throttle body: 1. Characteristics of the throttle body: The throttle body is a controllable valve that regulates air intake into the engine. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture, which burns to generate power. It connects to the air filter at the top and the engine block at the bottom, earning it the nickname 'the throat of the car engine'. 2. Classification of throttle bodies: There are two types of throttle bodies—traditional cable-operated and electronic. In traditional engines, the throttle body operates via a cable or rod mechanism, with one end connected to the accelerator pedal and the other to the throttle linkage plate. Electronic throttle bodies primarily use throttle position sensors to control the opening angle of the throttle valve based on the engine's power demand, thereby regulating the amount of air intake.