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Throttle Body is a mechanism of the complete air intake system within Toyota 4Runner automobiles that assists in the management of the amount of air that flows into the engine. The control is made using a butterfly valve that stands open and shut by the driver's accelerator action. This occurs especially where the valve shaft has been exposed to dirt and grimes that affect its efficiency making the car to be less fuel efficient and sluggish. So cleansing or even replacing the throttle body can be used to correct the efficiency of the air-fuel mixture and drive the engine. In cars with fuel injection, the role of the throttle body is of maintaining correct air fuel mixture with some cars even featuring electronic throttle control for better tuning. Furthermore, special cars can use several throttle bodies to prevent the airflow velocity decrease and to increase the response time.