Since there is an air flow sensor in the car, how to install the throttle position sensor?

Both the air flow sensor and the throttle position sensor provide signals to the electronic control unit (ECU) to control the fuel injection quantity, and there is also an oxygen sensor. The air flow sensor is located at the air inlet and the oxygen sensor is located at the air outlet.

Basically, it can be understood that the throttle position sensor is directly linked with the throttle, reflecting the action of the throttle foot and the opening of the throttle, and instructing the ECU to adjust the fuel injection quantity. It only gives an indication of the approximate range and direction (the opening of the throttle does not always correspond to the intake); However, it will cause ECU to accurately adjust the air-fuel ratio with the signal of air flow sensor, and this adjustment will be recorded and compared with the signal of throttle position sensor to reduce the deviation of the latter. Then ECU will use the signal of oxygen sensor (oxygen content in exhaust gas) to detect whether the air-fuel ratio is optimal, so as to adjust the deviation of the signal of air flow sensor.

Simply put, it is the process of starting-adjusting-detecting-readjusting.