Many cars have a throttle body component that incorporates the throttle. The throttle is usually a butterfly valve that controls the air and fuel intake and the body that house this throttle valve is called the throttle body. The throttle is usually placed at the front of the intake manifold and housed in the throttle body. With fuel injected engines, the throttle body is part of the air intake system and this controls the amount of air flowing into the engine in response to the action of the driver’s foot on the accelerator pedal. The throttle butterfly plate is the largest part of the throttle body. Pressure on the accelerator pedal activates the throttle cable which in turn opens the butterfly plate within the throttle body.
In modern cars an airflow sensor measures the change in the opening of the butterfly valve within the throttle along with the consequent air intake and communicates this with the ECU. The ECU then increases the amount of fuel being sent to the injectors to compensate for the increase in air being delivered so that the correct air-to-fuel ratio is achieved. Sometimes the throttle body in a car will contain valves to maintain the minimum airflow ratios when the car is idling.
Often a car will have idling or accelerating problems if the components of the throttle body are damaged or worn. A car’s butterfly valve within this component can sometimes be locked into the open position causing the car to rev very high. Replacing the throttle body in a vehicle by purchasing it online will require the inputting of the year model, make and engine size of the car to request the correct part and have it delivered to your door. The throttle body for a car is usually an inexpensive item to purchase but is a necessary component for all vehicles.