Why does fuel consumption increase after replacing the throttle body?

[JulietLynn]

Replacing the new throttle body increases fuel consumption to maintain the air-fuel ratio. Reasons for maintaining: Because the original throttle body was dirty, especially when the throttle opening was small, the actual diameter became smaller due to the dirt, resulting in relatively less air intake. To match the air-fuel ratio, the computer would reduce the fuel injection. After replacing the throttle body, it suddenly becomes clean, and the air flow through the throttle body increases significantly. Therefore, to maintain the air-fuel ratio, the computer increases the fuel injection, leading to higher fuel consumption. Function 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 then burns to produce power. Connected above to the air filter and below to the engine block, it is known as the throat of the car engine.