What is the phenomenon that the throttle position sensor is broken? What are the reliable detection methods?

After the throttle position sensor is damaged, the most common phenomena are engine idling instability and engine jitter. When the vehicle accelerates rapidly, there will be a phenomenon of insufficient power, and it is necessary to step on the accelerator deeply to accelerate. When the vehicle accelerates, it will shake intermittently, and the speed will be high and low for a while, which is extremely unstable. Damage to the throttle position sensor will also make it difficult to start the vehicle, and it will take many ignitions to start it successfully.

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.

What are the reliable detection methods for the broken throttle position sensor?

1. Unplug the throttle position sensor and turn on the ignition switch. Measure the voltage between Vcc and full throttle shock and the voltage between Vcc and idle contact. The voltage should be between 4.5 volts and 5.5 volts .. If the voltage value is not within the range, the throttle position sensor is damaged;

2. Open the throttle slowly, then check the voltage signal of the position sensor, and then tap the position sensor. If the pointer of the voltmeter is found to be moving, it may be that the throttle position sensor is faulty.

If the throttle position sensor is damaged, it is best to go to a 4s shop or a repair shop to replace it with a new one, and there is no need to repair it. The repaired throttle position sensor is easy to be damaged again, and the price of the throttle position sensor is not expensive, about 50 yuan to 80 yuan.