The three way catalytic efficiency is below the critical value What is going on, how to solve it

The three-way catalysis is installed on the exhaust pipe and its function is to purify the exhaust gas. Its structure is a number of densely packed honeycomb small eyes, and the exhaust gas will pass through the small eyes and be discharged. It is composed of three rare metals, platinum, rhodium, and palladium, which act as catalysts.

It can convert harmful gases in exhaust gases, such as nitrogen oxides and carbon monoxide, into harmless gases and then discharge them into the atmosphere, so three-way catalysis plays an important role in the protection of the environment.

Three-way catalysis is not a consumable, in the process of converting tail gas, it only plays the role of a catalyst, and does not participate in chemical reactions itself, so it can be used indefinitely. So how can it be broken? There are only two states of broken three-way catalysis, the first is because the combustion produces a large amount of carbon deposits and impurities, which clogs the three-way catalytic and the exhaust gas is not smooth.

The second is because of three-way catalytic poisoning, which leads to the loss of activity of rare metals and cannot play a catalytic role. If it is the first case, the car will have weak acceleration, stuffiness, and the speed cannot be raised, and if the blockage is serious, it will not be able to continue driving, because the exhaust gas cannot be discharged. In the second case, the engine fault light will be on and fuel consumption will increase.

The failure of the three-way catalysis has a lot to do with the oil used, because the oil contains more lead, and the lead will adhere to the three-way catalysis, resulting in its activity being reduced and failing, commonly known as lead poisoning. Therefore, if the quality of the oil added is fine, there is no need to clean the three-way catalysis regularly, because it will not be broken at all, many cars have never been washed, and the three-way catalysis has not been broken, which is consistent with the life of the car. If the quality of the oil is not very good, it can be cleaned regularly, otherwise it may deteriorate faster.

Hello, there is no rear oxygen sensor.

If anything, it is its problem, and the quality of the catalytic converter is detected by the rear oxygen sensor.

It means that the three-way catalytic converter is aging or clogged, resulting in a decrease in working performance.

If the efficiency of the three-way catalytic converter is low, it is generally the three-way catalytic system is blocked, and the vehicle exhaust exhaust will not be smooth after the blockage, which will affect the power and fuel consumption will also increase, so it is necessary to find the severity of the blockage of the three-way catalytic system.

If it is only a moderate or mild blockage, it can be cleaned and repaired by a special oxidation catalytic converter machine, and if it is a serious blockage, the three-way catalytic converter needs to be replaced immediately.

The working principle of the three-way catalytic converter is: when the high-temperature automobile exhaust gas passes through the purification device, the purification agent in the three-way catalytic converter will enhance the activity of CO, hydrocarbons and NOx, and promote it to carry out a certain redox chemical reaction.

Among them, CO is oxidized at high temperature to become colorless and non-toxic carbon dioxide gas; Hydrocarbons are oxidized to water (H20) and carbon dioxide at high temperatures; NOx is reduced to nitrogen and oxygen.

The three harmful gases become harmless gases, so that the exhaust gas of the car can be purified. The premise is that oxygen is still available, and the air-fuel ratio is reasonable.

In the diagnostic computer, the low efficiency of the three-way catalytic converter is mainly due to the aging or blockage of the three-way catalytic converter, which can be checked by exhaust gas detection.

1. Three-way catalytic converter: it can convert the three main harmful substances in the exhaust gas into harmless substances at the same time.

2. The three-way catalytic converter, also known as the "catalytic converter", is an important part of filtering harmful components in the exhaust, and is the most important external purification device installed in the automobile exhaust system.

3. The three-way catalytic converter can convert harmful gases such as CO, HC and NOx discharged from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction.

Hello, the inefficiency is going to be replaced, I wish you a happy car.

Hello! The three-way catalytic converter is malfunctioning.

The three-way catalytic converter does not have the ability to catalyze at room temperature, and the catalyst must be heated to a certain temperature to have the ability to oxidize or reduce, usually the ignition temperature of the catalytic converter is 250-350, and the normal working temperature is generally 400-800.

1. When the car works at low temperature for a long time, the three-way catalytic converter cannot be started, and the carbon smoke discharged by the engine will adhere to the surface of the catalyst, which will block the pores of the carrier and affect its conversion efficiency in the long run.

2. When the temperature exceeds 1000, the catalyst of the inner coating will sinter and die, and it is also very prone to spontaneous combustion accidents. Therefore, it is necessary to pay attention to the control of various factors that cause the exhaust temperature to rise, such as the ignition time is too late or the ignition sequence is out of order, the ignition is broken, etc., which will make the unburned mixture enter the catalytic converter, resulting in the exhaust temperature being too high, affecting the efficiency of the catalytic converter.

Summary. Hello, dear, I am happy to serve you, through the official query shows that the three-way catalysis is below the limit value of how to solve the only way to take replacement. The three-way catalytic efficiency is too low and not repaired, which may cause the three-way catalytic converter to fail to work normally and the exhaust gas to exceed the standard.

The blockage of the three-way catalytic converter not only seriously causes the fuel consumption of the vehicle to increase, the power decreases, and the exhaust gas exceeds the standard, but more seriously, it makes the exhaust pipe burn red, resulting in spontaneous combustion of the vehicle.

Hello, dear, I am happy to serve you, through the official query shows that the three-way catalysis is below the limit value of how to solve the only way to take replacement. The three-way catalytic converter is too low and the non-repair may cause the three-way catalytic converter to fail to work normally and the exhaust gas exceeds the standard. The blockage of the three-way catalytic converter not only seriously causes the fuel consumption of the vehicle to increase, the power decreases, and the exhaust gas of the brigade exceeds the standard, but more seriously, it makes the exhaust pipe burn red, causing the vehicle to spontaneously combust.

Dear, hello, if the three-way catalysis is lower than the limit value, it has to be replaced, and if it is not replaced, the environmental protection will not be able to pass the inspection, and it is not good for the environment.

Is it okay to change to a normal one?

Hello, dear, the three-way catalysis of the big truck can't be changed to an ordinary one, dear. The three-way catalytic silencer is an indispensable off-board purification device on diesel vehicles, which is generally installed at the end of the exhaust branch pipe of the truck near the engine. A three-way catalytic converter is similar to a muffler.

Its exterior is made of Zen Chong double-layer stainless steel plate to make a cylindrical shape, the interlayer is equipped with insulating material asbestos fiber felt, and the inside is equipped with a special filtration and purification device for Hebei J in the middle of the mesh partition.

Mine is the Honda Accord VIII, is it okay to change it to a normal one?

Dear, hello, Honda Accord eight generations, for the ordinary can yo, dear.

Now it shows that the three-way catalysis is lower than the limit value, and the fault light is on, and the fault light will not light up after replacing it.

Hello, dear, the three-way catalytic fault light will not turn on after changing, dear.

How much does it cost to be original? Ordinary approximate cost.

How much is the original factory of the Honda Accord 8th generation ternary?

Hello, dear, I am happy to serve you, through the official inquiry of the dust state of the sedan car, Honda Ya erection brother Shige eight generations of three yuan original factory needs about 2600 yuan, dear. The ordinary one needs about 1000 yuan, pro.

Can I use it after changing?

Hello, dear, you can use it, it's shorter than the original factory, dear.

Summary. Hello, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, the engine fault three-way catalysis efficiency is low, this situation mainly considers the following reasons, the first aspect is to check whether the three-way catalysis itself is damaged or blocked. The second aspect is to check the oxygen sensor to see if the oxygen sensor is aging and failing or is inefficient, and the third aspect is to check whether the computer board itself is faulty.

The engine fails and the three-way catalytic efficiency is low.

Hello, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, the engine fault three-way catalysis efficiency is low, this situation mainly considers the following reasons, the first aspect is to check whether the three-way catalysis itself is damaged or blocked. The second aspect is to check the oxygen sensor to see if the oxygen sensor is aging and failing or is inefficient, and the third aspect is to check whether the computer board itself is faulty.

The 12-year-old Cruze engine was muffled, and the low-speed start was too meaty.

In this case, the following aspects should be considered. The first common aspect is whether the ignition defect caused by the addition of ordinary inferior gasoline to the oil quality problem is a failure. The second common problem is that the ignition system failure mainly includes leakage of the ignition coil, too large gap of the spark plug, and poor ignition.

The third aspect is mainly the group side, which mainly includes the problem of poor combustion caused by throttle deposition, fuel injector deposition and in-cylinder carbon deposition. The fourth aspect is mainly to consider the sensor aspect, which is generally the oxygen sensor.

Will the ternary be blocked.

A similar situation occurs when the three-way catalysis is blocked.

In the past, the computer did not match the model, and it often burned red three yuan, whether it would burn out.

Will this happen if the front oxygen sensor is broken?

If the computer does not match, it often causes the three-way catalysis to burn red, and this situation will also lead to the damage of the three-way catalysis.

The signal of the oxygen sensor is inaccurate, the data is distorted, and there will also be a dullness when the throttle cannot be added.

It may be that the three-way catalytic converter has failed and cannot reduce the three harmful gases carbon monoxide, hydrocarbons, and nitrogen oxides to carbon dioxide, nitrogen, and water.

The low efficiency of the three-way catalytic converter can only be replaced, and the blockage of the three-way catalytic converter will not only increase fuel consumption, but also reduce the power and exhaust gas exceeding the standard.

Hello, the three-way catalytic efficiency is low, which means that there is a problem with the detection system of the three-way catalytic **, it is based on two oxygen sensors for comparison, and the filtered emissions are the same detection, so that there are two reasons for this situation, the first reason is that the mixing ratio is not right, and the need to use a diagnostic computer poison area to dispose of the flow, to see if the mixing ratio is normal, the second situation is that there is a problem with the three-way catalytic converter itself, which leads to this situation, and it is not cheap to replace the three-way catalytic **, First of all, it is recommended to do the overall cleaning, after the cleaning of the poster failure needs to be replaced, I hope this service can help you, if it is helpful to you, look forward to your praise and attention. The car master is here to help.

The three-way catalytic efficiency was reported to be low, and the fuel ,,, anything, but the car inspection passed the previous section.

Hello. I am your exclusive technician, attentive, careful, attentive to answer your questions, I hope this service can help you. Hello, the three-way catalytic socks are inefficient, which means that there is a problem with the detection system of the three-way catalytic **, it relies on two oxygen sensors to detect the same emissions of the old filtered ratio, so that there are two reasons for this situation, the first reason is that the mixing ratio is not right, and it is necessary to use a diagnostic computer to dispose of the flow in the toxic area, to see if the mixing ratio is normal, and the second situation is that there is a problem with the three-way catalytic converter itself, which leads to the replacement of the three-way catalytic ** It's not cheap, first of all, it is recommended to do the overall cleaning, after cleaning, the poster failure needs to be replaced, I hope this service can help you, if it helps you, look forward to your praise and attention.

The car master is here to help.