What is the phenomenon that the throttle position sensor is broken?
1, resulting in unstable idle speed of the car.
Because the sensor detects the real-time condition of the engine through two contacts, once there is a problem, it will be very unstable when idling.
2, can't start the car, even if it is started, it will often turn off.
Both cases indicate that the throttle position sensor is broken, and the owner needs to replace the sensor in time to avoid other unnecessary effects on his car.
As a vehicle position sensor, throttle position sensor not only plays a very important role in the automobile industry, but also in other industries.
Pay attention to the inspection of the throttle position sensor when using the throttle position sensor.
The throttle position sensor is a friction part and a vulnerable part, and it will fail if it is not connected properly.
The role of the throttle:
The throttle position sensor is also called throttle opening sensor or throttle switch. Its main function is to detect whether the engine is in idle or load condition, acceleration or deceleration condition. It is essentially a variable resistor and several switches installed on the throttle body.
The rotating shaft of the resistor is connected with the throttle valve, and it has two contacts, a fully open contact and an idle contact. When the throttle is in the idle position, the idle contact is closed and the idle working condition signal is output to the computer; When the throttle is in other positions, the idle contact is opened, and voltage signals with different angles relative to the throttle are output, so that the computer can identify the engine load according to the signal voltage value.
According to the change rate of signal voltage in a certain period of time, whether it is an acceleration state or a deceleration state is identified. According to these working conditions, the computer corrects the fuel injection quantity or controls the fuel cut-off.