Once the oxygen sensor fails, the computer of the electronic fuel injection system can not get the information of oxygen concentration in the exhaust pipe, so it can not feedback control the air-fuel ratio, which will increase the engine fuel consumption and exhaust pollution, and the engine will appear unstable idle speed, lack of fire, surge and other fault phenomena. Therefore, the fault must be removed or replaced in time
When installing automotive oxygen sensors, the following points need to be noted:
1. Distinguish the position: the oxygen sensor is installed in front of the three-way catalytic converter, and the post-oxygen sensor is installed behind the three-way catalytic converter.
2. Tool preparation: Use professional tools to install the oxygen sensor, especially considering that the thread size of the oxygen sensor is generally M18, and the recommended torque is 45-55Nm.
3. High temperature protection: The working temperature of the oxygen sensor can reach 800 ° C. Therefore, pay attention to preventing burns when removing or installing the oxygen sensor and ensure that the exhaust pipe is completely cooled before operating it.
