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

[JulianaFitz]

A faulty throttle body can cause the following issues in a car: 1. Unstable engine idle, persistently high idle speed that doesn't drop, and difficulty starting the engine, especially during cold starts; 2. No engine idle; 3. Insufficient engine power, poor acceleration performance, and unstable operation; 4. Black smoke from the exhaust pipe and increased fuel consumption. The throttle body is a controllable valve that regulates air intake into the engine, with two types: traditional cable-operated and electronic throttle bodies. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture for combustion and power generation. Connected to the air filter at the top and the engine block at the bottom, the throttle body is often referred to as the throat of a car engine. The responsiveness of a car's acceleration is closely related to the cleanliness of the throttle body.