QUESTION ABOUT OXYGEN SENSOR

Q1：What is the role of the oxygen sensor in the car?

A1: Oxygen sensor is the engine's “intelligent respiratory regulator”, real-time monitoring of the oxygen content in the exhaust gas, to help the on-board computer (ECU) to accurately adjust the air-fuel ratio. It ensures full combustion of fuel, improves power, reduces fuel consumption, and at the same time reduces harmful emissions in the exhaust, which is a key component for efficient engine operation and environmental protection.

Q2: How to judge the quality of the oxygen sensor?

A2:Under normal conditions, the protection tube has no residue, and the color is obscure

Q3: How to recognize oxygen sensor poisoning? What are the causes? What are the characteristics?

A3: Oil contamination, characteristic: the surface of the protection tube is covered with a white or gray-black oily deposit. Cause: Fuel additives or oil entering the engine for combustion

Silicon Poisoning, Characteristics: Protective tube deposits that range in color between bright white and a grainy light gray. Cause: Silicon compounds are corrosion-inhibiting ingredients found in some sealants, lubricants, and antifreeze

Lead Poisoning is characterized by a shiny, rusty layer on the surface of the protection tube. Cause: Use of leaded gasoline. Leaded gasoline can damage oxygen sensors and three-way catalytic converters. The mileage of most oxygen sensors drops drastically after erosion by leaded gasoline. Cars that regularly use leaded gasoline will only work for a few thousand miles, even with a new oxygen sensor.

Antifreeze contamination causes: antifreeze leaks from the cylinder head into the engine, for combustion.

Q4: How to extend the service life of the oxygen sensor?

A4: To prolong the service life of the oxygen sensor, you can take the following measures:

Use high-quality fuel: Avoid using poor-quality fuel, as the impurities in it may contaminate the sensor.

Maintain the engine regularly: change the oil and air filter on time to keep the inside of the engine clean.