What s going on with the old and bad oxygen sensor in the car

Summary. If the oxygen sensor is always broken, it is necessary to check whether the engine exhaust emissions exceed the standard or the oil is burned, which will cause the oxygen sensor to be damaged.

What is the reason why car oxygen sensors are always bad?

Hello, happy to answer your questions.

If the oxygen sensor is always broken, it is necessary to check whether the engine exhaust emissions exceed the standard or the oil is burned, which will cause the oxygen sensor to be damaged.

Why is the oxygen sensor of my car always bad with the same oil product for the same car?

This depends on whether there is a problem with the exhaust emissions of your own engine, the oxygen sensor is easy to break, and it does not mean that it is a problem with the oil.

The symptoms of oxygen sensor failure are as follows: once the oxygen sensor fails, the computer of the electronic fuel injection system will not be able to obtain the information of oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption and exhaust pollution of the engine, so that the engine will have unstable idling, fire, surge and other fault phenomena. 1.

Poisoning: Poisoning of automotive oxygen sensors includes lead poisoning and silicon poisoning. When lead poisoning occurs in cars, most of it happens in cars that run on leaded gasoline.

The key to silica poisoning is silica produced by the combustion of silicon compounds contained in gasoline and lubricating oils. If it is only mildly poisoned, it can be cleaned up, but once the internal structure of the oxygen sensor is damaged, it needs to be replaced directly.

2. Ceramic fragmentation: The ceramic of the automotive oxygen sensor is hard and brittle, and in the process of use, if it is knocked with a hard object or washed with a strong air flow, it may basically be broken and invalid. Therefore, it is necessary to be especially careful when dealing with it, and replace it immediately when the problem is found, so as to prevent problems in the process of use, which is related to the normal driving of the car.

3.Burned-out resistance wire: If the heater resistance wire is burned out, it will be difficult for the sensor to reach the normal working temperature and lose its function.

It is necessary for you to have a more accurate grasp of the oxygen sensor during use, and deal with the problem immediately to prevent any abnormality, which is related to safe driving.

4.Line disconnection: The disconnection of the lambda sensor line will also affect the failure of the oxygen sensor.

Usually, when the oxygen sensor is inspected, it is found that the top of the oxygen sensor is black, which may be caused by carbon deposits. When the engine carbon deposits are eliminated, most of them automatically remove the carbon deposits from the oxygen sensor. That's all I have to share with my friends.

So, what are the symptoms of the oxygen sensor after reading it? Do you have a basic understanding of this question? Isn't it helpful to read this knowledge?

Finally, I hope my sharing can be helpful to my friends. 2019

If there is no alarm, don't care about it, white smoke and dripping water are normal phenomena, indicating that the engine is in good condition, and you can wash the throttle or check the lower mat when idling and shaking.

If the oxygen sensor of the car is broken, the engine will have unstable idling, lack of fire, surge and other faults. Therefore, it is necessary to troubleshoot or replace it in a timely manner. Once the sensor fails, the computer of the electronic fuel injection system will not be able to obtain the information of the oxygen concentration in the exhaust pipe, so it will not be able to feedback and control the air-fuel ratio, which will increase the fuel consumption of the engine and the exhaust pollution.

The performance of the broken sensor to the car is as follows: 1. The performance of the broken speed sensor: the speed sensing function is mainly to detect the speed of the electronically controlled car, and the control computer uses this input signal to control the engine idling, the torque lock of the automatic transmission, the automatic transmission shift, the opening and closing of the engine cooling fan and cruise control and other functions; 2. Symptoms of broken speed sensors:

engine instability at idle; When the vehicle starts or slows down and stops, there is an instantaneous pause or stallion; Reduced engine acceleration; There is a deviation in the speed display on the instrument mill; The engine fault light is on; 3. The performance of the throttle position sensor is broken: if the throttle position sensor is out of tune, the correct ignition advance angle and the air-fuel ratio of the mixture cannot be guaranteed. The throttle position sensor should be accurately adjusted to the specified voltage reading, if the adjustment is too low, because the exhaust gas recirculation system does not provide enough exhaust gas in time, detonation will occur when accelerating, if the adjustment is too high, because the exhaust gas recirculation system reacts too fast, the exhaust gas provided is too much, so that the power is reduced; 4. The coolant finch bend temperature sensor is broken, and the performance of the crack bucket:

If the coolant temperature sensor fails, the engine will have unstable idling, lack of fire, flameout or increased fuel consumption, etc., a multimeter should be used to detect the resistance value of the coolant sensor at various operating temperatures according to the manufacturer's regulations.

1. Once the oxygen sensor and connection line are abnormal, it will not only exceed the emission standard, but also deteriorate the working condition of the automobile engine, resulting in symptoms such as idle shutdown, inaccurate operation of the automobile engine, and power decline; 2. The function of oxygen sensor: control vehicle exhaust emissions, reduce air pollution caused by vehicles buried in wild birds, and improve the quality of fuel combustion of automobile engines. The basic working principle of an oxygen sensor is similar to that of a battery, and the element of zirconia in the sensor acts similarly to that of an electrolyte.

Its basic working principle is: under certain conditions (high temperature and platinum catalysis), the difference between the oxygen content inside and outside the zirconia leads to the potential difference, and the larger the concentration difference, the greater the potential difference. The oxygen content in the air body is 21%.

The exhaust gas, a dense gas mixture, after combustion, practically does not contain oxygen. After the combustion of the diluted gas mixture or due to the lack of ignition source in the spinal fluid, the exhaust gas contains more oxygen, but still less than the oxygen in the atmosphere.

Catalyzed by high temperature and platinum, the oxygen attached to the oxygen sensor disappears completely, resulting in a difference in current and voltage, with the output voltage of the rich mixture approaching 1V and the output voltage of the lean mixture approaching 0V. According to the current and voltage data signals of the oxygen sensor, the air-fuel ratio is controlled, and then the pulse width of the fuel injection is adjusted, so the oxygen sensor is an important sensor for electronically controlled fuel measurement and detection. Only when the bend of the oxygen sensor is earlier than the high temperature (the end reaches more than 300) can its characteristics be fully displayed and the output voltage can be fully displayed.

At around 800, it responds most quickly to changes in gas mixtures.

After the car oxygen sensor is broken, there are some abnormal conditions in the vehicle that need to be repaired and detected as soon as possible.