The engine failure light kept on, what s going on

The engine fault light is not necessarily the engine failure, but more often some parameters exceed the standard value, such as exhaust emissions exceeding the standard, or for some reason the engine fires, etc.

The knock sensor is installed in the middle of the engine block, and the four-cylinder engine is installed between the 2nd and 3rd cylinders, or one in the middle of the 1st and 2nd cylinders, and one in the middle of the 3rd and 4th cylinders. Its function is to measure the degree of engine shake, and to adjust the ignition advance angle when the engine detonation.

The engine fault light is used to show the working condition of the vehicle engine, when the key door is opened, the vehicle self-test, the indicator light is lit and automatically extinguished, if it is always on, it means that the engine of the vehicle has a mechanical failure and needs to be repaired.

Engine indicator refers to the indicator light used to show the working condition of the vehicle's engine. The indicator light is used to show the working condition of the vehicle engine, when the key door is opened, the vehicle self-test, the indicator light is lit and automatically extinguished, if it is always on, it means that the engine of the vehicle has a mechanical failure and needs to be repaired.

Good morning, the EFI car electronic control system is mainly composed of sensors, actuators, computer board wiring harnesses, fault lamp assembly, ** abnormal will light up the fault lamp, at this time you need to use the decoder to call up the fault code for troubleshooting.

If the fault light of the engine is still lit after the ignition, go to detect it, read the fault code, and see if the specific fault is in.

When the car is only connected to the power supply and has not been ignited, it is normal for the engine fault light to be on, and if the vehicle is not faulty, it will be extinguished after the ignition. If the vehicle is really faulty, it will not go out after the fire. In other words, to see if the vehicle has a faulty light, you should look at it after it is on fire.

The moment you turn on the ignition key, all the fault lights will come on, and after about two or three seconds, the other fault lights will go out, leaving only the engine fault light. Some cars will also have battery lights and oil pressure lights will also be on, which is normal. This source knows that several parts with lights on must be ignited before self-inspection, so it will be on until the ignition, and the engine computer self-test will not find a fault after ignition, it will be extinguished immediately, which takes about two or three seconds.

If the car is faulty and it can't catch fire, it can't be said that it is because the fault light is on.

The CS75 engine fault light is always on, which may be due to the poor combustion state of the engine and carbon deposits. 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.

What causes the engine failure light to come on?

1. Like our vehicles, there are usually a lot of closed sensors, the more common ones are water temperature sensors, oxygen sensors, etc., when the sensor is damaged or the contact is poor, the engine fault light will light up.

2. When we usually fill fuel, the fuel used does not meet the standard, that is, the inferior fuel is added, which will cause the engine fault light alarm for a long time.

3. Many people do not change the air filter very frequently during maintenance, which affects the air intake of the car, and in serious cases, it will cause the engine failure light to turn on.

4. The failure of the spark plug and ignition related positions of the engine will lead to insufficient combustion of gasoline in the vehicle, and will also lead to the alarm of the engine fault light.

The engine fault light is the most common light, and if it is on in actual use, it can be turned on in most cases. There are several other uncommon fault lights on the car, which cannot be continued after they are turned on, or they must be stopped to check and make sure that there is no abnormality before they can continue to drive. Organic oil pressure lamp, water temperature warning lamp, handbrake lamp, tire pressure lamp.

After these four lights are lit, it is necessary to pay special attention, if there is a fault and continue to open, it may cause a big problem, so it is necessary to stop and check immediately, and there is no abnormality to continue to open, and if you are not sure, stop on the side of the road and call for rescue.

How can I prevent carbon build-up in my engine?

1.Fill with high-quality gasoline.

Impurities such as wax and gum in gasoline are the main components of carbon deposits, so gasoline with high cleanliness has a weak tendency to carbon deposits. Unfortunately, the quality of gasoline in China is still lower than that of developed countries. It should be noted that a high grade does not mean that the oil has less impurities, and the label only represents the octane number of the oil, not the quality and cleanliness.

For reference, 1. Sensor failure; 2. The quality of gasoline is not up to standard; 3. The air leakage of the inlet pipe leads to the mixture being too thin; 4. The fuel pressure is low, and the injector and fuel filter are blocked; 5. The signal of the pressure sensor and the throttle position sensor is abnormal; 6. The signal of the sensing liquid tank device is abnormal, resulting in inaccurate ignition timing and late ignition; 7. Weak high-voltage sparks due to poor spark plugs, igniters or high-voltage wires; 8. The throttle is dirty; 9. The exhaust gas recirculation system works poorly; 10. The exhaust pipe is blocked; 11. The cylinder pressure is low; 12. Turbocharging system failure 13. Clutch three-piece set 14 Air filter blockage, piston ring break or stuck, poor valve sealing, late ignition time, carburetor mechanical failure, air intake pipe leakage, individual cylinders do not work well or do not work, etc. However, some of the faults of insufficient engine power can be solved by use. Such as:

The general wear of the cylinder is high, and the flow of the carburetor oil channel is not smooth. When the user reflects that the engine power is insufficient, when the oil is burned, we should first judge the cause of the lack of power, in the exclusion of the air filter blockage, the carburetor throttle can not be fully opened, the ignition timing is not good, the intake pipe gasket is damaged, the individual cylinder does not work or does not work well, and then according to whether the engine fuel consumption is too high to judge the carburetor working condition, if the fuel consumption is too high, the exhaust smoke is very thick, it is likely that there is a mechanical failure such as the volume hole falling off, this fault must be repaired as necessary. Finally, we have to judge the wear and tear of the engine cylinders.

Engine wear directly affects the tightness of the cylinder; The most convenient way to check the tightness of the cylinder is to use a cylinder pressure gauge to check the compression pressure of the cylinder.

The engine failure light is not necessarily the engine failure, but the more tense indication is that some parameters exceed the standard value, such as the exhaust emission exceeds the standard, or the engine is caused by occasional misfire for some reason, etc.

The engine failure light is not necessarily the engine out of hunger, but more often it is that some parameters exceed the standard value, such as the exhaust emission exceeds the standard, or the engine accidentally misfires due to some reason, and so on.

It may be that there is a problem with the oxygen sensor, which will cause the fault light to light up.

The engine fault light of the car is lit, and there are many reasons involved, and you need to check it to know what the problem is.

1. Identify the cause of the failure. For diagnostics of such faults in which the engine does not start, the battery should be tested first. It is necessary to find out if the engine does not start because the battery is insufficient.

2. Detect ignition timing. Timing belt slippage is the root cause of the failure that there is no electric spark and the engine cannot start.

3. Detect the starting system. In the case of faults such as engine failure to start, the first thing to do is to check the circuitry in the engine starting system. From the perspective of the most basic composition, the circuit of the starting system generally includes the following basic parts, that is, the battery, the starting motor and the cable connecting these parts.

Of course, in addition to this, ignition switches, starter relays or solenoid coils, as well as in-vehicle anti-theft systems, are also important components of the starting system.

4. Detect the quality of electric sparks. Once the circuitry of the starting system has been tested and proven to be fine-tuned, attention should be focused on why the engine is not working. Generally speaking, the ignition system of the engine is tested first, which is also the easiest inspection job.

In early ignition systems, you could easily remove the ignition coil and use a spark detector to detect if the spark was normal. When choosing a spark detector, an adjustable detector is preferable to a fixed design because it allows you to adjust the detector to a smaller gap so you can tell if there is no spark at all, or if there is an electric spark but it is weak.

5. Detect the fuel system. The diagnosis of the fuel system can be divided into two parts: the diagnosis of the fuel supply system and the diagnosis of the injector circuit system.

The fuel supply system can be detected by measuring the flow and pressure of the fuel. The best way to measure fuel flow is to inspect the line when there is a load in the fuel supply line.

The reason why the engine fault light is on, there are still many reasons involved, it is recommended to go to the 4S or repair shop to read the fault code with the machine to know the specific reason. The engine fault light is on, which is generally divided into the following three categories: 1. False alarm:

Just report a fault, but the vehicle is normal, it may be that a certain operation is beyond the control of the computer, and the computer feedback is a failure

1. The fault lamp is lit and accompanied by less obvious shaking, and after 3 minutes of flame-off, it starts again in the volt state, and the fault of the starting stove is still lit. It may be that the engine vacuum hose is broken, aging, or leaking. Blocked fuel injectors, leaking crankcase vent valves, malfunctioning air flow meters, faulty front oxygen sensors, leaking manifolds in the exhaust chamber, and possibly poor fuel quality.

2. There are many other reasons for different models, the sensors on the engine are many and precise, and every abnormal data will lead to ignition failure, when refueling in ethanol fuel cities, a bottle of fuel additives that meet the vehicle standards should be added to improve the octane number, water removal, and combustion, otherwise it will also cause the fault lamp to light up or even damage the engine.

The engine of the car can be said to be the heart of the car, and if the engine fault light of the car is on, it means that there may be some problems with the engine. So, what's going on with the engine failure light keeping it on?

1. If you ignite just after adding gasoline, the engine fault light in the display screen of the car will turn on, but at this time, all aspects of the car's functions are normal, and there is no problem with the sound of the engine turning. This condition is generally caused by gasoline, and the engine failure light will go off after the car has been driven for a while. It may take a long time to go out, it may go out in a few minutes, so it's fine.

2. There is also a phenomenon that in the process of driving, the engine fault light is on, and it has been lit without extinguishing. However, the car can also be driven normally, and other fault lights do not turn on, that is, there is a problem with the sensor of the engine fault light, which causes the engine fault light to turn on incorrectly and cannot be extinguished. In this case, you need to go to the garage to check the sensor and then repair or replace it.

If the car's engine fault light is on and the car can't drive properly, it means that the engine has failed. At this time it is better not to continue driving the car and need to wait for rescue. If you continue to drive the car, it is likely to lead to an aggravation of the car's breakdown situation and may even damage the engine.

It is normal to be bright during self-inspection, if it is still bright after ignition, it is necessary to go to the maintenance station for inspection in time. The engine fault signal is sent by the ECU (engine computer), and the ECU controls all the electronic equipment of the entire engine, such as electronic throttle valves, fuel injectors, generators, fuel pumps, etc., covering air intake, exhaust, fuel, ignition, timing, etc.