What is the reason why the fault light of the Chevrolet car keeps on

There are many cases where the engine oxygen sensor is abnormal and causes the engine fault light to alarm. The engine oxygen sensor is generally placed near the intake manifold, due to intense driving or some collisions, the oxygen sensor will be displaced or damaged, which will cause the sensor to be abnormal and cause a fault light alarm.

Plugged injectors and carbon build-up in the intake valves can also trigger engine failure light alarms. Because there will be impurities in gasoline, they will accumulate at the fuel injector, which will affect the fuel injection of the fuel injector, especially in the cylinder direct injection engine, which will directly lead to engine shutdown and other conditions. The impurities will produce carbon deposits after combustion, and the accumulation of carbon on the throttle to a certain extent will affect the normal opening and closing of the throttle, affect the normal work of the engine, and cause the alarm light to light up.

Another common scenario is sensor failure. After walking on a muddy road, the engine fault light suddenly turned on, but there was nothing unusual about the car itself. When I drove the car to the 4S shop for inspection, it was found that the left front wheel sensor was faulty.

As a result, the problem was solved by slightly cleaning it with water and then installing it. An abnormal sensor does not necessarily mean that the vehicle is faulty, but there will certainly be an anomaly that needs attention.

There are many cases where the abnormal oxygen sensor of the engine causes the engine failure light to report the alarm. The engine oxygen sensor is generally placed near the intake manifold, and due to intense driving or some collisions, the oxygen sensor will be displaced or damaged, which will cause the sensor to be abnormal and cause a fault light alarm.

The reason why the motor failure light is on.

1. The combustion state is not good.

Poor engine combustion condition is the main reason why the engine failure light is on. In the design of the car, in order to ensure that the engine is in good working condition and ensure the normal working life of the engine, an oxygen sensor is designed and installed on the engine to monitor the combustion state of the engine.

2. The fuel quality is not good.

Many riders who find that the engine fault light is on have a feeling: that is, the engine fault light suddenly turns on after adding a tank of fuel. Because the engine has requirements for the quality index of oil, especially as the requirements for the engine are getting higher and higher in various specifications, the quality index of the oil is also getting higher and higher.

3. The inside of the engine cylinder is not clean, and there must be some carbon deposits inside the engine after a certain period of use, which will cause the engine design parameters to change, and its properties are unstable and heat is accumulated, and the accumulated heat will lead to disorderly ignition of the engine, thereby causing engine detonation. In this case, the engine fault light is also illuminated.

The engine fault light is on the solution.

1. Clean the engine.

Once the engine failure light is on, the owner should clean the engine in time, and there are currently two correct cleaning methods:

1) Go to the repair shop to clean the carbon deposits with a special cleaning agent.

2) Clean the entire fuel system with good fuel additives, including removing carbon deposits in the cylinder.

2. Add higher grade gasoline.

After the engine cleaning, because the compression ratio of the current automobile engine that meets the national IV emission standard is generally above, this kind of car is not suitable for long-term gasoline below 95. In order to keep the engine in good working condition, the owner can choose to add 95 or 97 gasoline, which can usually solve the problem of the engine failure light on.

3. Improve fuel quality.

Since the domestic fuel cannot meet the requirements of the current high-efficiency engine for the time being, it is necessary to improve the quality of the fuel by yourself. For example, using good fuel additives to improve the cleanliness level of fuel should be the best way.

Hello answer. The engine fault light is lit, the cause may be that the ignition performance of the engine is problematic or the engine sensor sensing performance exceeds the range, which needs to be detected by the computer fault code to diagnose the specific problem. It is best to go to the 4S shop to test it with a computer, and then repair it.

Explain that the SAIC-GM Chevrolet Sail engine is short of oil, open the hood, add a sufficient amount of transmission oil, the engine fault light is automatically eliminated, and the specific steps of Chevrolet Sail to add oil are as follows

1. Open the door of the SAIC-GM Chevrolet Sail cab.

2. Pull the hood switch on the left side of the SAIC-GM Chevrolet Sail driver's leg.

3. Lift the hood of the engine of the SAIC-GM Chevrolet Sail upward.

Fourth, use the support rod to support the hood of the SAIC-GM Chevrolet Sail engine, and ensure that the support is firm to avoid danger during operation.

5. Supplement a sufficient amount of engine oil to the SAIC-GM Chevrolet Sail gearbox, and the oil volume can reach the middle of the upper scale and the lower scale line.

The reasons for the failure of the engine light are the failure of the three-way catalytic converter, the failure of the oxygen sensor, the poor quality of gasoline, the aging of the ignition coil, the serious carbon deposit of the engine, the damage of the air flow sensor, the engine knocking, and the long-term lack of maintenance of the car.

As the only component to monitor the air-fuel ratio, if there is a failure, the engine computer will not be able to obtain the current normal monitoring data, and the air-fuel ratio cannot be adjusted in real time, which directly manifests as the mixture is too thin or too thick, resulting in the engine fault light on. It may not be the fault of the oxygen sensor itself, or it may be a wiring problem, a loose plug, etc.

The Chevrolet engine fault light is on

1. Sensor problems.

The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on.

2. Maintenance problems.

Poor engine maintenance is the most common cause of engine failure to light up. We know that vehicles have a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light that you should care about your car.

3. Oil quality problems.

The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame.

4. Poor combustion of mixed gas.

The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the engine mixture. Poor combustion of the mixture is caused by engine carbon deposition or knocking problems, and these will eventually be detected by the engine's oxygen sensor, and after being reported to the ECU, the fault light will naturally be lit as a warning.

5. Air intake problems.

When the engine burns, it needs to take intake, the air filter element is very important in this process, if the air filter element of the car is not clean, it will affect the air intake of the car if it is not cleaned regularly, and it will be blocked for a long time, and if it is serious, it will cause the engine failure light to turn on.

Go to the 4S shop or auto repair shop and ask the maintenance master to use the on-board computer detection system to check what is the reason for the fault light to turn on, and then repair it.

Reasons for reference only: 1. The sensor is damaged, the contact is poor, or the signal is interrupted; 2. Poor engine maintenance; 3. The quality of fuel and oil is not good; 4. The combustion of the mixture is insufficient; 5. Spark plug failure, ignition coil failure; 6. The fuel pump is faulty and the oil circuit is blocked; 7. The air conditioner filter is blocked.

The specific situation is analyzed as follows; 1. Sensor problems. The sensors mentioned here include water temperature, crankshaft position, air flow, intake air temperature, oxygen sensor, etc., when these sensors are damaged, poor contact or signal interruption, the ECU of the car can not accurately obtain the engine data, at this time it will cause the engine fault light to turn on. 2. Maintenance problems. Poor engine maintenance is the most common cause of engine failure to light up. We know that the vehicle has a certain maintenance cycle, if the owner does not maintain on time, coupled with bad driving habits, then it will increase the burden of engine operation, and finally can only remind you through the fault light to care about your car 3, oil quality problems; The oil quality here includes fuel and engine oil, we know that the fuel filled by the car is generally marked, and the engine oil is also semi-synthetic and fully synthetic, the manufacturer will generally recommend the owner to use which grade of fuel, which type of engine oil, if the owner does not add as required, it will cause wear and tear of the engine in the long run, and the fault light is not to blame.

Poor combustion of the mixture; The failure of the spark plug, ignition coil, fuel pump, and oil circuit blockage of the engine will cause poor combustion of the mixed seepage shed gas of the engine. The poor combustion of the mixture is caused by the engine carbon deposition or detonation problems, and these will eventually be monitored by the engine's oxygen sensor, and after reporting to the ECU, the fault light will naturally be lit to warn of the intake air intake problem; When the engine burns, it needs to take in the air, and the air filter is very important in this process, if the air filter of the car is not clean, the light will turn on if it is not cleaned regularly. pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate.

The most common of these is turbocharger damage, and at the same time, the vehicle will also have oil leakage, large oil consumption, and power loss.