The reason why the engine indicator light does not go out when the car is on fire

If the engine system is faulty, go to the 4S shop for inspection. The indicator light is on to warn that the engine system is faulty, and many faults will cause the warning light to be on, and the cause cannot be known without computer diagnosis.

Many drivers also know that most of today's cars are also with self-test functions, when the key in our house is screwed to on, the front car will be energized, at this time the car will do a self-test first, at this time the dashboard will naturally light up a variety of indicators, and some indicator lights will be lit up, and then they will go out, some need to wait until the car starts to go out, if your car is on fire, some indicators are still on, So here is also a reminder that there may really be a problem with cycling, and at this time you must also undergo a certain inspection. Don't panic when the engine fault light is always on, deal with it according to the old driver's method, and don't spend money in vain.

The main reason why the engine failure light is on is the throttle.

or carbon deposits inside the engine.

Too much, resulting in the mixture ratio of imbalance, it is easy to engine failure light on; If your car is driving at a low speed in the city for a long time, it is easy to have this phenomenon; There is also the phenomenon that will also occur if you often hang the gear when the engine is low at low rpm; Then it's possible that it's because of the high voltage line.

The insulation layer is more likely to be broken down after aging, which causes the engine fault light to be on, because the control unit self-diagnosis system generally does not make fault code indication for the high-voltage line, it is recommended that you go to a professional maintenance shop to do detailed maintenance, and there is to correct bad driving habits.

The sensor of the throttle is wrong, and the throttle is just "matched" by the computer.

It needs to be tested with a diagnostic device.

Specific reasons: 1. The quality of gasoline is poor and not up to standard.

It is estimated that most car owners have this experience, and the car is not long after the car is refueled, and the car dashboard.

The engine failure light was lit; This is generally due to the addition of poor quality gasoline at non-standard gas stations, resulting in insufficient combustion of the oil-gas mixture and the engine fault light when the engine is working. This will not affect driving safety, but it will be more or less harmful to the engine.

2. Oxygen sensor failure.

Nowadays, cars are equipped with two oxygen sensors, three-way catalytic converters.

Put one before and one on the front. The function of the front oxygen sensor is to detect the air-fuel ratio of the engine under different working conditions, while the ECU computer adjusts the fuel injection amount and calculates the ignition time according to this signal. The rear is mainly to detect the working of the three-way catalytic converter!

Therefore, if the oxygen sensor is damaged or the sensor plug is damaged or loose, the mixture will be too thin or too thick, which will cause the fault light to turn on.

3. The air flow sensor is faulty.

The air flow sensor, also known as the air flow meter, detects the amount of air inhaled and converts it into an electrical signal to the ECU of the electronic control unit, which indirectly allows the ECU to decide how much fuel to spray according to the optimal air-fuel ratio. If the air flow sensor or line fails, the ECU will not get the correct signal of the exhaust volume, and the normal fuel volume control will not be carried out, resulting in the mixture being too thin or too thick, and the engine will not work properly.

4. Carbon deposition in spark plugs.

The uneven quality of fuel on the market and the congested urban traffic make it easy for the automobile spark plug to produce carbon deposits, which will lead to poor engine work, such as difficult starting, unstable idling, poor acceleration, urgent refueling and tempering, excessive exhaust gas, and increased fuel consumption.

5. Engine knocking.

When the engine sucks in the oil-gas mixture, the compression stroke has not yet reached the expected ignition position, and the factors outside the control of each type of infiltration cause the oil-gas mixture to ignite on its own. At this point, the impact of combustion is enormous.

Contrary to the direction of movement of the piston, it causes the engine to vibrate, a phenomenon known as knocking. It is manifested as the car driving weakness, the engine noise is too loud, and in severe cases, it is accompanied by the sound of cylinder knocking.

6. The water temperature sensor is damaged.

The water temperature sensor has a thermistor inside it.

The lower the temperature, the higher the resistance, and the higher the temperature, the lower the resistance. When the water temperature of the engine is low, the water temperature sensor of the water temperature gauge feeds the water temperature information of the ECU to make the air-fuel ratio thicker, so that the engine works stably. Similarly, if a cool-up message is sent after warm-up, the air-fuel ratio will become thicker and the engine will not work properly.

7. The engine lacks cylinders.

Obviously, after the engine lacks cylinders, it will lead to high fuel consumption, black smoke, weak acceleration of the car, serious shaking, engine noise will also increase, and it is easy to stall the vehicle. The lack of cylinders in the engine mainly comes from the ignition system and fuel supply system, including carbon deposition in the spark plug and damage to the high-pressure oil pump.

1.Poor quality of gasoline will cause the mixture to burn inadequately in the cylinder, resulting in polluting lights, and it is also prone to carbon deposits.

2.The presence of carbon deposits in the inlet duct and piston tip will lead to poor atomization, which will lead to insufficient combustion and the pollution lamp will be on. Make Jane.

3.When the cold car is started, especially when the weather temperature drops sharply, the pollution light will be ,.. when started due to the temperature correction problem of the computer

4.If the engine mileage is too long, the working characteristics of the spark plug will be weakened, and the dirty god will be lit.

5.Excessive carbon deposition and difficult ignition will lead to the reverse breakdown of the ignition coil, resulting in the failure of the ignition coil, resulting in poor ignition, resulting in incomplete combustion.

The first type: out of gas. The fuel gauge shows that it is below the red line, so it naturally does not ignite.

The second type: the battery is out of power. It may be due to the loss of power or the expiration of the battery life due to the long-term headlights have not been turned off, and it is generally recommended to replace the battery in time after 2 years.

In addition, the installation of xenon headlights, high-power audio, etc. are also the causes of vehicle circuit failures. The situation of the vehicle without power is easy to check, just press the horn to know.

The third type: gear.

Wrong. Automatic.

When the car starts, the gear must be placed on the P or N gear, if it is placed on the R or D gear, it will not ignite. There are also some manual transmission cars.

If you don't step on the clutch, you won't catch fire.

In addition to the reasons for improper human operation, there may also be motor failure, or oil pump oil supply, fuel injector problems, sensor failure, etc., encountering these more complex situations, need to be dealt with by professionals. However, pay more attention to the following items when using a car to avoid these complex situations.

The reason why the car can't start and the fault lights are on is:

1. Too much carbon deposition inside the throttle or engine;

2. After the failure of the oxygen sensor, the mixture is out of balance. If you drive at low speed in urban areas for a long time, this phenomenon is easy to occur;

3. The phenomenon of leakage of the fuel injector leads to the fact that the fuel injector is still in the state of oil supply after the throttle is collected, resulting in the mixture being too thick when driving at low speed, resulting in unstable idle speed after the fuel injector. If it is serious, it will be turned off directly;

Hello! In this case, the possible reasons are: 1. Insufficient fuel pressure 2, incorrect throttle position sensor signal 3, poor fuel pump 4, poor spark plug work In addition to the reasons for improper human operation, there may also be motor failure, or oil pump fuel supply, fuel injector problems, sensor failure, etc.

Possible reasons are:

1. Insufficient fuel pressure.

2. The signal of the throttle position sensor is incorrect.

3. The fuel pump is not working well.

4. Poor spark plug work In addition to the reasons for improper human operation, there may also be motor failure, or oil pump oil supply, fuel injector problems, sensor failure, etc.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

If it can't catch fire, take a look at the car battery to see if there is a time when the electricity is on fire? This fault light will be on for a few seconds or so, if it has been on, it must be a fault, if he is a few seconds later, this fault, which is equivalent to clearing, he is a self-test program, so don't worry.

In this case, it is recommended to go to the repair shop for testing.

Engine failure light turns on and off Reason:

1. The instrument prompts that the gearbox is abnormal or the fault light is on, which is generally the alarm when the gearbox fails, and the fault can be determined by computer detection;

2. It may be that the electronic components of the gearbox are faulty, and the solution is: use a computer to detect and replace the damaged electronic components;

3. If the mechanical components of the gearbox are seriously worn, the solution: repair the damaged mechanical components;

4. There is an engine or ABS failure that sends an wrong signal and interferes with the gearbox, solution: detect the engine and ABS, and repair the damaged electrical components.

If the fuel quality is not good, it may also lead to insufficient combustion during driving, and the engine fault light will jump out, but it will not last too long, and if you turn it on again, it will naturally go out. In this case, we don't have to worry, it is very likely that low-quality gasoline has been added. However, the gasoline is filtered by a gasoline filter element before entering the combustion chamber, which will not cause any damage to the engine, so there is no need to pump off the inferior gasoline, and after burning, it can be replaced at a regular gas station.

In addition, some old cars have more carbon deposits, and it is easy to cause the engine failure light to turn on, because the carbon deposit itself has adsorption, and when it just starts on fire, if the engine failure light lasts for dozens of seconds, and then extinguishes it is caused by carbon deposits. Because when the car is just started, some of the fuel injected will be adsorbed by carbon deposits, and the inlet fault light will turn on, but it will go out after a while. This situation is due to the poor air intake, and it may be that the air filter is too dirty and needs to be replaced.

Summary. Reasons why the engine failure light cannot ignite:1The gasoline is of poor quality and is not up to standard. Solution: Remove the remaining gasoline and clean the fuel nozzles.

Reasons why the engine failure light cannot ignite:1The gasoline is of poor quality and is not up to standard. Solution: Remove the remaining gasoline and clean the fuel nozzles.

2.Oxygen sensor fault solution: replace the oxygen sensor;

3.Air flow sensor failure Solution: It is recommended to clean the replacement parts in time.

4.Carbon deposits on the spark plug Solution: Replace the spark plug with a new one; 5.Engine detonation Qin Hui Solution: Regularly go to the Yushou Lack 4S shop for maintenance, and clean the oil road and grease nozzle.

If the fuel quality is poor, the combustion in operation will be inadequate and will sometimes fly out of the engine failure lamp, but it will not last long. If you drive again, it will disappear. You don't have to worry about that.

Most likely, there is low-quality gasoline in it. However, the gasoline is filtered by an oil filter before entering the combustion chamber, and there is no damage to the engine, so there is no need to pump out the inferior gasoline. Another situation is that there is a lot of carbon in the old car No. 1, and the lights that are easy to cause engine failure are on.

Since the accumulation of carbon itself has adsorption, if it starts just after **, and the cause of the engine failure lamp goes out after tens of seconds, the accumulation of carbon is likely to be affected. Since the car has just started, a part of the fuel ejected is adsorbed by carbon, and if the concentration of fuel it enters the cylinder is low, it will affect the lighting mold. The reason why the engine failure light turns on and ignitions and goes out:

1. Usually the engine alarm light turns on and goes off for a while, there is no big problem, and we don't have to worry too much; 2. For example, after the cold car is started in winter, the fuel is poorly atomized in the engine cylinder, which is not easy to burn and has poor effect. The engine's warning light may be on for a while after starting, and when the temperature rises, the warning light will go off on its own. 3. If the fuel quality is poor, the combustion in operation is not sufficient, and it may fly out of the engine fault indicator, but it will not last too long.

If you drive again, it will disappear. You don't have to worry about that. Most likely, there is low-quality gasoline in it.

However, the gasoline is filtered by an oil filter before entering the combustion chamber, and there is no damage to the engine, so there is no need to pump out the inferior gasoline, and after combustion, it can be replaced by a regular gas station.

1. When the vehicle is started for self-inspection, the engine fault indicator lights up, and if the engine is working normally, it will be actively extinguished after starting.

2. If the engine fault indicator is always on after starting, it means that the engine may have mechanical failure. There are many reasons why this fault light is always on, and it is generally difficult to solve it by self-inspection, so it is best to stop and carry out professional maintenance in time.

3. When the vehicle is started for self-inspection, the oil indicator light will be on, and if the oil pressure is normal or relatively clean, it will be actively extinguished after starting.

4. If the indicator light is always on after starting, there may be two reasons: the engine lacks oil, so that the oil pressure in the engine fails to push the oil to touch the diaphragm in the sensor. The oil pump parts are damaged, which reduces the working capacity of the oil pump or the oil pump stops working, resulting in a drop in oil pressure, and the belt and sensor cannot be touched.