Where is job's throttle position?

The throttle valve of Pacific Auto Network is located behind the air filter element of the air intake system and in front of the air intake manifold. Throttle is the throat of the engine, which can control the intake of the engine. When the driver presses the accelerator pedal, he actually does not directly control the fuel injection quantity, but controls the throttle opening. When the throttle opening becomes larger and the sensor detects that the amount of air entering the engine increases, the ecu will command the fuel injection system to increase the fuel injection amount.

Control the idle motor to reduce the valve opening, and there is a temperature sensor on the throttle at this water pipe position. However, this technology is outdated, and its function is to let the throttle know the water temperature. When the water temperature rises, the temperature sensor controls the opening of the idle motor to be larger when the water temperature is low, which is the reason why the waiting speed changes from high to low when the cold car starts.

The throttle position sensor is installed on the throttle body. With the change of throttle opening and the rotation of throttle shaft, the brush in the sensor slides or the guide cam rotates, which converts the angle signal of throttle opening into an electrical signal and sends it to ECU. Cars with automatic transmissions usually use linear output throttle position sensors.

Damage to the valve position sensor will lead to engine jitter and unstable idle speed, because the throttle position sensor is a signal to detect the throttle opening! The engine computer adjusts the fuel injection quantity and ignition time according to the throttle opening! If the throttle valve is damaged, the engine computer can't receive the signal of the throttle valve opening correctly, which leads to the inability to accurately adjust the fuel injection quantity and ignition time, and in severe cases, the engine can't start!