Why does the engine failure light of the Buick GL8 new car always turn on?

Causes the fault light to turn on:

Poor gasoline quality will cause the mixture to burn inadequately in the cylinder, resulting in a fault light and carbon deposits.

When the cold car starts, especially when the weather temperature drops sharply, the fault light will be on when starting due to the temperature correction problem of the computer, but as long as the temperature drops to a certain level, it will be relatively stable after the temperature does not fluctuate.

Excessive carbon deposition will cause the fault light to illuminate, and a distinctive feature of this phenomenon is that the engine is always severely shaken when the ignition coil fails.

Some of the sensor computer boards themselves are faulty, resulting in the fault lights on.

Several reasons are 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 engine mixture.

Poor combustion of the mixture is caused by the problem of engine carbon deposition or knocking, and these will eventually be detected by the engine's oxygen sensor and reported to the ECU, which will naturally turn on the fault light to warn of the intake air intake problem; 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. pressurization issues; Intake booster lines and turbochargers can also cause engine failure lights to illuminate. The most common of these is turbocharger damage, while the vehicle can also experience symptoms such as oil leakage, high oil consumption, loss of power, metal noise, and blue or black smoke from the exhaust pipe.

7. Exhaust problems; Rear oxygen sensor, three-way catalytic converter, exhaust camshaft and bearing. The most common of these is a failure of the three-way catalytic converter that causes the engine failure light to illuminate. The use of leaded gasoline, the use of leaded or silicone lubricating oil additives, the three-way catalytic bump, and the failure of the engine fuel supply system are some factors that are easy to cause the failure of the three-way catalytic converter.

As for the problem that the engine failure light is on, since you have not seen the current car, I can only help you analyze the cause of this failure. The main reason for the engine failure light is that the throttle valve or the engine has too much carbon deposit, and the oxygen sensor has a faulty mixture ratio that causes the gas to be out of balance, which is easy to turn on the engine fault light; If you're driving at a low speed in the city for a long time, this can easily happen. It is also necessary to pay attention to check whether the fuel injector is leaking, resulting in the fuel injector being in the state of fuel supply after the throttle, resulting in the mixture being too thick when driving at low speed, which will lead to unstable idle speed after oil rewinding, and if it is serious, it will lead to stalling.

You can start with these aspects to check, and I hope mine will be helpful to you.

Hello! After the vehicle is started, if the fault light keeps on, it means that the engine electronic control system is faulty.

The most common cause may be a faulty engine sensor, or a damaged actuator, or it may be a wiring cause.

This needs to go to the repair shop to read the specific fault code with a decoder, and generally there will be a decrease in vehicle power and fuel consumption after it is lit.

Car questions, ask the car guru. 4S shop professional technician, 10 minutes to solve. 】

What happened to the Buick GL8 engine fault light? The causes of this malfunction are usually dirty injectors, vacuum leaks, air flow meters or oxygen sensors.

Incorrect signal, etc.

Sound is one of the direct reactions to the health of the engine. When the engine of the car.

If the sound is too loud or abnormal, it should be repaired in time to prevent the expansion of the fault. The common abnormal noise of the engine is mainly due to the following reasons:

1.The mating gap is too large.

Fitting clearance is an important indicator of automotive assembly quality. When the crankshaft.

When the bearing, connecting rod bearing and piston pin hole are seriously worn, the matching clearance of each component will seriously exceed the standard, and abnormal noise will be generated, such as the knocking sound between the piston and the cylinder wall, the impact sound between the connecting rod bearing and the shaft journal, etc.

2.Poor lubrication.

Lubrication refers to the use of lubricating oil (grease) as the medium for the mating surface of moving parts to prevent direct friction of parts. If lubrication is insufficient, wear can be exacerbated, causing abnormal noise. This can be solved by adding lubricating oil.

3.Abnormal burning.

Under normal combustion, the flame is removed from the spark plug.

Start, spread smoothly in the combustion chamber at a normal speed until the mixture is completely combusted. However, if there is a problem with the engine timing system, resulting in an early or long ignition time, abnormal combustion and knocking may occur, causing the engine cylinders to emit an abnormal metal knocking sound.

4.Damaged, loose, or non-conforming parts.

Abnormal noise caused by deformation and damage of components or loosening after long-term use is also common, such as cylinder knocking caused by connecting rod bending, abnormal noise caused by valve spring fracture and crankshaft starvation fracture, and abnormal noise caused by loose spark plug and poor tightening. In this regard, the problem can be solved as long as the corresponding parts are replaced.

Causes include dirty injectors, vacuum leaks, incorrect signals from air flow meters or oxygen sensors, etc. It is recommended to go to the 4S store for maintenance in time.

1. Sensor problem: the sensor includes water temperature, crankshaft position, air flow measurement, air intake 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. 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.

3. Oil quality problem: oil quality 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 not added as required, it will cause wear and tear of the engine in the long run.

4. Poor combustion of mixture: spark plug failure, ignition coil failure, fuel pump failure, oil circuit blockage, etc. 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.

Photo by Chen Zhi Gao Fang1) @2019

The reasons why the Buick GL8 engine fault light is on: 1. The mixture of the engine burns poorly; 2. The fuel supply pressure is abnormal; 3. The gap between the poles of the spark plug is worn; 4. Ignition coil failure; 5. The rubber parts of the engine bracket or gearbox bracket are aging; 6. The throttle is blocked.

What is the reason why the Buick GL8 engine lights up? There are a number of reasons why the engine compartment malfunction light is on. An engine fault light indicates that the engine system is faulty. It may be that the spark plug is not good or the throttle valve is dirty and needs to be repaired in time.

The commercial representative model - Buick GL8 has a stable and restrained appearance. The Buick GL8 has a calm and stylish body silhouette, innovative styling, and a good sense of weight. The steady and restrained appearance is not mediocre at all, giving people a sense of clarity at a glance.

The exterior of the Buick GL8 is perfect whether viewed from the front, side, and back. The unique design does not cause excessive fatigue when driving, and the U-turn rate is high when driving on the road. It's a very good car.

The Buick GL8 is excellent in all aspects of workmanship and can be called the most conscientious car. Overtaking and changing lanes while driving are very flexible. It is easy to overtake when fully loaded, and both the driver's and passenger seats are comfortable.

The Buick GL8 is a car that everyone deserves to own. It is very comfortable and stable to drive, full of power, and there is no pressure at all when overtaking. Both the driver's seat and the passenger seat are comfortable.

Photo by Pacific Automobile Network Q&A).