The fuel injectors and the throttle body function separately. Fuel Injection Throttle Bodies and Induction Systems are liable for controlling the air accessing the engine in respect of the gas pedal position. This has a device called potentiometer found in the opposite part of the throttle link termed as the throttle position feeler. This sensor starts with .5 volts on an average while the throttle is shut down, to about 4.5 volts while the throttle is open. The computer read between the lines of this voltage as the request of the driver for a particular power need and accordingly adjusts to obey this request through the ignition and fuel systems.
You should change the air duct and air cleaner hoses from the body of the throttle and delink the connectors in respect of the throttle position sensor, the intake temperature feeler and the idle air control if applicable. You should also change the throttle link by holding the linkage and grab it open when the cables are raised and turned to their openings inside the link and changed. You should change four nuts ensuring the body of the throttle to the input manifold, utilizing a socket. You should pull the body of the throttle from the studs inside the manifold, and spray the same with the help of carburetor cleaner. You must change the air control by changing the bolts, utilizing a socket. You may then clean the holes through which the idle air passes and ensure that they are free from all sorts of contaminants. Change the body of the throttle in opposite order for changing. This is more or less brief matter about Fuel Injection Throttle Bodies and Induction Systems.