My Volkswagen CC engine fault light turned on, and then I went to the repair shop computer to check

The causes of engine misfire and the symptoms when it occurs.

Engine cylinder lack and misfire is a meaning, but the name is different, cylinder lack and misfire both refer to a cylinder or multiple cylinders in a multi-cylinder engine does not work or can not work normally; After the failure of missing cylinder misfire, the engine will have severe shaking, resulting in insufficient power, weak acceleration, high fuel consumption, and if it is a multi-cylinder misfire, the engine may not start.

Special attention should be paid to the fact that some cars will still inject fuel from the fuel injector when they lack cylinders, so that the unburned gasoline mixture enters the exhaust pipe and continues to burn where the three-way catalytic converter is located, resulting in the three-way catalytic converter being scrapped due to high temperature.

The causes of engine misfire can be divided into two main categories.

1. Failure of the electronic control system, such as sensor signal loss or signal inaccuracy, wrong control signal or no signal output, failure to ignite due to damage to the spark plug or ignition coil, no fuel injection from the fuel injector and line failure, etc.

2. Mechanical failure, mainly due to insufficient cylinder pressure, such as valve closure is not tight, air leakage, the gap between the cylinder, the piston, and the piston ring is too large, resulting in insufficient compression ratio in the cylinder.

The lack of cylinders in the engine will bring great harm: the speed and power of the engine will decrease. Increased fuel consumption and emissions of pollution. Aggravate the wear of running parts and shorten the service life of lubricating oil. The engine is missing cylinders and needs to be overhauled in time.

The solution to the lack of cylinders in the engine:

1. Circuit failure: spark plugs, cylinder wires, ignition coils, etc. are damaged, and it is easy to lack cylinders. You can use the broken fire to determine which cylinder parts are damaged, and replace the damaged parts;

2. Oil circuit: If the oil circuit is not cleaned for a long time, there will be more gum and magazines in the oil circuit, and the fuel injector will be blocked. The oil cut-off test is used to detect the fault point and carry out maintenance;

3. Mechanical failure: the internal piston, connecting rod, piston ring, piston pin, etc. of the engine are faulty, which are generally accompanied by obvious abnormal noise, and obvious metal chips can be seen when detecting the oil. Generally, this situation requires the engine to be dismantled.

The (gas) cylinder misfire and lack of cylinder of the engine are the same thing. It's just called differently.

Pneumatic cylinder misfire and lack of cylinder both refer to a cylinder in a multi-cylinder engine that does not work or does not work properly.

The main reasons are spark plug damage, failure, ignition circuit failure, excessive carbon deposition in the cylinder, insufficient cylinder pressure, etc. It is necessary to go to the repair shop to investigate the specific cause and carry out maintenance.

High-end luxury cars and new cars are facing jitter, high-end cars have a large compression ratio, high fuel requirements, domestic fuel is the characteristic, engine manufacturers are based on the mainstream fuel appearance, there is no research on ethanol fuel.

In fact, it is not a problem with the engine, as long as you use a detergent to clean it once, you don't have to worry about this situation, add 1 to 2 Siyoupu fuel additives according to the size of the fuel tank, and run one or two tanks of fuel, and the jitter before the D gear is good.

Check the ignition coil and spark plug handle, the lack of cylinder leads to a serious loss of vehicle power.

Hello, I am inquiring for you, please wait a while, I will reply to you immediately Hello, Check the ignition coil and spark plug handle, the lack of cylinder leads to a very serious loss of vehicle power.

If you have any other questions you want to consult, you can describe them!

Question ignition, fuel injection, cylinder pressure, normal, is the lack of sparkling, three-cylinder does not work answer There are many reasons why the three-cylinder engine does not work, mainly from these aspects First, there is good cylinder compression Second, there is a proper mixture Third, strong sparks Check it from these three aspects, and it must be repaired.

Cold car shake or hot car or keep shaking Cold car shake is more carbon deposit, if it shakes all the time, it is mixed gas imbalance Both of these reasons are at the same time The cylinder is accompanied by a misfire.

You don't have to worry about changing to a Toyota.

Volkswagen CC engine shakes! Misfire in the cylinder! The engine intermittent idle jitter lack cylinder stalling is generally not a problem with accessories, the problem comes from poor combustion, which will cause such a phenomenon.

The oil circuit can be cleaned, and the gas station also regularly cleans the oil storage tank, not to mention the fuel tank of the private car. The oil circuit of the fuel tank is dirty, and if it burns badly, it will miss the post and catch fire. After running the two divisions of the general fuel tank, the intermittent misfire lacks the cylinder, and the jitter will disappear after 1.

Reference:

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Generally, the main reasons for the engine failure light are sensor problems, maintenance problems, oil quality problems, poor combustion of the mixture and air intake problems. In the event of a malfunction of the engine or related components, the engine fault indicator on the dashboard of the car will illuminate so that it can be preventive.

The engine fault light is on, it may be that the fuel pump does not pump oil, and the car cannot be started, and it cannot be driven directly; It is also possible that the oxygen sensor is faulty, and in this case, the car can still drive normally, but it will lead to a deviation in the control of the engine's air-fuel companion ratio, which is more fuel-efficient than before.

There is also a possibility that the fault light is on, that is, a false fault, and this possibility is relatively large, for example, you have just driven a family car in the mud to a high-speed off-road, or you are curious about what a plug is shining and plugged it in, the ECU will warn you about this improper operation (fault light), in fact, there is no problem with the car, just eliminate it.

Photo by Lu Liting Lu Lu Wang) @2019

A faulty light in a Volkswagen engine could be due to a dirty throttle or excessive carbon buildup in the injectors, or it could be due to an oil issue. It is recommended to go to the 4S store for a detailed check.

If the engine is in a bad combustion state, the starting fault light will illuminate. In order to ensure that the car engine is in good working condition and maintain its normal service life, an oxygen sensor is installed inside the engine to detect the combustion state at the time of design. If the engine burns badly, it will increase fuel consumption and wear, and at the same time pollute the environment.

Some riders found that after adding a new fuel tank, the engine failure light came on. What happened? This is because automobile engines have certain requirements for fuel quality, and now the requirements for fuel quality are getting higher and higher.

If the oil you add is not of good quality, the engine fault light will of course come on.

Carbon deposits in the engine cylinders can also cause the engine fault light to come on. As the running time increases, a certain amount of carbon deposits will form inside the engine. These carbon deposits can alter the design parameters of the engine.

In addition, the engine is unstable and builds up heat. This heat can cause the engine to ignite disorderly, which in turn will cause the engine to knock and finally the engine failure light will come on.

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The reason why the Volkswagen CC engine fault light is on is actually quite general, because there are many factors that cause it to light up, such as sensors, maintenance problems, oil problems, air intake problems, poor combustion of the mixture, and so on. There is no doubt about how important the engine is, and the light on the fault light must indicate that there is something abnormal, and there may also be a false fault caused by a faulty signal. Although there is a certain probability of false failure, in order to ensure the safety of the car, as well as the possibility of small lesions and major diseases, it will bring more serious damage to the vehicle.

Therefore, the owner should check the engine fault light as soon as possible.

1. Sensor

Due to damage or other problems, the sensor does not produce the correct data, so the ECU of the car will misjudge the engine fault light based on the wrong data. There are many automotive sensors, the core of which are water temperature, crankshaft position, air flow, inlet air temperature, oxygen sensor, etc. If the engine is faulty due to the sensor, the light is on, and the corresponding sensor only needs to be replaced or adjusted.

Oxygen Sensor:

There are two oxygen sensors, which are before and after the three-way catalytic converter, and the oxygen sensors in different positions have different functions. The front oxygen sensor needs to detect the air-fuel ratio of the engine under different operating conditions, and the data will help the car computer to adjust the fuel injection amount and calculate the ignition time. It is the rear oxygen sensor that detects whether the three-way catalytic converter is working properly.

A faulty oxygen sensor can cause the mixture to be too thin or too concentrated, which can illuminate the engine fault light.

Air Flow Sensor:

The air flow sensor calculates the amount of air, converts it into an electrical signal and sends it to the car computer, and finally the ECU determines the amount of fuel by using the optimal air-fuel ratio. Too thick or too thin of the mixture can also be a direct effect of the air flow sensor problem, as well as the engine failure light.

2. Oil

In fact, there are strict requirements for the oil of the car, and we only need to fill the qualified oil to meet the normal operation of the engine. Long-term use of unsatisfactory fluids can cause the engine to wear out faster, and the engine failure light may also be lit as a result. The solution is simple, just fill with the right fluid to eliminate the faulty lamp.

3. Mixed gas combustion

Including spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage, etc., will cause poor combustion of engine mixture. The consequence of poor combustion of the mixture on the engine is carbon deposits or knocking, which causes the engine fault light to illuminate. Measures such as replacing spark plugs, cleaning oil circuits, and cleaning up carbon deposits have a certain chance of eliminating faulty lights.

Volkswagen CC owners are actually difficult to find the fault light, and 4S shops and repair shops can use the fault diagnosticator to find out the general direction that causes the fault light to be lit. If the car has no obvious fault symptoms, and the engine fault light turns on and off, then it is likely to be a temporary failure. Temporary failures may seem insignificant, but they can also be "hidden killers".

Therefore, the owner should not ignore it and should find time to check the vehicle. If the engine fault light is lit for a long time, and the car is accompanied by other symptoms, such as the car cannot be started, frequent stalls, engine shaking, lack of power, etc., you should contact a 4S shop or repair shop for maintenance as soon as possible.

An engine failure light on yellow indicates that the engine has failed. 1. There is a problem with the gasoline added or the engine has too much carbon, resulting in a poor combustion state of the engine. 2. The oxygen sensor of the engine is faulty, which will generally make the engine fault light light turn yellow; 3. Problems such as blocked carbon deposits in the fuel injector or intake valve will cause fault light alarms.

The fault light of the Volkswagen CC engine may be due to a dirty throttle valve or excessive carbon accumulation in the fuel injector, or it may be an oil problem. It is recommended to go to the 4S store for detailed testing.

If the combustion state of the engine is not good, the fault light will be lit when it is started. In order to ensure that the car starts the mu imitation machine in good working condition and maintains a normal service life, an oxygen sensor is installed to detect the combustion state during the design. If the combustion condition of the engine is not good, it will increase fuel consumption and wear, and it will also pollute the environment.

Some riders found that after Bitong added a new tank of oil, the engine fault light turned on, what happened? This is because the automobile engine has certain requirements for the quality of fuel, and now the requirements for fuel quality are getting higher and higher. If the quality of the oil you add is not good, of course the engine failure light will come on.

Carbon deposits in the engine cylinders can also cause the engine failure light to come on. As the operating time increases, a certain amount of carbon deposits will form inside the engine. These carbon deposits can lead to changes in the engine's design parameters.

In addition, the nature of the engine is unstable and heat accumulates. This heat can cause the engine to ignite disorderly, which in turn can cause the engine to knock and eventually cause the engine failure light to come on.

Photo by Q&A) Xpeng P7 Model Y Aion V Ideal One NIO EC6 Model X @2019