How often does Chang 'an Yuexiang oxygen sensor change? Positioning and replacement process of Yuexiang oxygen sensor.

20 19 Yuexiang generally has two oxygen sensors, namely the front oxygen sensor and the rear oxygen sensor. The front oxygen sensor is located in front of the three-way catalytic converter, and the rear oxygen sensor is generally located in the back. See the figure below for the specific location.

1 wiper water

2 storage battery

3 Throttle

4 oxygen sensor

5 Brake tank

6 fuse box

7 Air cleaner element

8 Coolant tank

The working environment of oxygen sensor is very bad, and the car will be replaced when it is driving100000 kilometers. You can know whether the oxygen sensor needs to be replaced by observing the tip of the oxygen sensor. Generally, carbon deposition will lead to tip blackening. If the tip is black, it is necessary to remove the sensor and clean it. Use ferric chloride solution containing excessive hydrochloric acid, 5- 10%. And if the tip is white or brown, it is that the oxygen sensor is poisoned. Cleaning at this time will have no effect and needs to be replaced in time.

Next, I will introduce you to the replacement tutorial of Yuexiang oxygen sensor.

1, first determine the position of the oxygen sensor;

2. Remove the protective cover on the oxygen sensor; Then unplug the oxygen sensor;

3. Tighten the hexagon nut of the oxygen sensor with a wrench and rotate it counterclockwise to remove it;

4, restore the installation and tighten it in turn before connecting;

5. Connect the trip computer, clear the fault code, and read the data flow of the engine at the same time to check whether the values are normal.