Buick gl8 Fault Automatic Valve 4 is stuck in the open position.

Buick gl8 has been praised as "perfect MPV" by Southeast Asian media because of its luxurious style, strong power and spacious and comfortable advantages. However, all cars will break down. The following are some common faults and solutions of Buick GL8.

1. Clean the throttle body and idle motor.

Symptoms: Generally, driving in Beijing is about 20,000 kilometers. Due to the air quality, there will be a lot of dirt on the throttle and idle valve of the throttle body. When dirt accumulates to a certain extent, the engine will have low idle speed, poor idle stability, and stuck when refueling, so it is necessary to clean the throttle.

Solution: first clean the dirt on the stop valve and idle valve of throttle body, and then set it by computer to meet the standard.

Maintenance price: The cost of working hours and materials for the maintenance of this project are 80 yuan and 7 yuan respectively.

2. Disassembly-free cleaning of fuel injector

Symptoms: Because gasoline contains impurities more or less, these impurities will attach to the needle valve of the injector. Working for a long time will cause poor atomization, linear or dripping when injecting oil, and even lead to the phenomenon that the needle valve is improperly closed and often drips oil or is stuck without injecting oil. When driving, the engine will feel weak, trembling and unstable, and the exhaust gas will exceed the standard. In severe cases, the engine will not start.

Solution: When the above faults occur, it is necessary to clean the fuel injector without disassembly. At the same time, the carbon deposit on the top of the combustion chamber and piston can be cleaned together and discharged with the exhaust gas. Therefore, the power and fuel economy of the car can be restored.

Maintenance price: It is generally recommended to clean the vehicle every 20,000 kilometers and keep the fuel injector, air intake system and combustion chamber clean at all times. The man-hour cost of maintaining this project is 80 yuan, and the material cost is 68 yuan.

The car deviated from the track and the tire was eccentric.

Symptoms: After the four-wheel alignment value is inaccurate, the handling performance of the vehicle will be reduced. When the vehicle turns, it will feel the direction is heavy, the sensitivity will be reduced, and there will be driving deviation and tire eccentric wear.

Solution: The inaccurate positioning value is mainly caused by the poor road condition of the car or the damage and deformation of the chassis parts, which often happens even if the new car travels about 5000- 10000 km. When the above phenomenon occurs in the driving process of your vehicle, you must go to the repair shop to check and calibrate the four-wheel alignment value in time to restore the normal alignment angle of the wheels.

Maintenance price: 240 yuan.

4. The oil seal of the half shaft leaks oil.

Symptom: The function of the axle shaft oil seal is to keep a good seal between the transmission and the axle shaft, so that the transmission does not leak oil. Because the semi-axle oil seal is located in the lower part of the chassis, the working environment is extremely bad, and the semi-axle oil seal often appears damage and oil leakage in use. Because the oil seal of the axle shaft is damaged, there will be a lot of oil stains under the car, which can be detected intuitively with the eyes.

Solution: When the oil seal of the axle shaft is found to leak oil, it should be replaced in the repair shop in time to avoid damaging the transmission and bringing you greater losses when the oil leakage is serious.

Maintenance price: the man-hour cost for maintaining this project is 160 yuan/set, and the material cost is 35 yuan/set.

5. The PC valve of the transmission is damaged, resulting in impact during gear shifting.

Symptom: PC valve is the main oil pressure regulating valve of the transmission, which controls the main oil pressure of the transmission according to the signal provided by the computer, so as to realize the smooth transition when shifting gears and improve the driving comfort of the vehicle. When the PC valve fails, there will be impact when shifting gears.

Solution: When the above faults occur, you must go to the repair shop to replace the PC valve in time.

Maintenance price: the man-hour cost of replacing PC valve is 1 1,000 yuan, and the material cost is 28 1 yuan.

6. Replace the spark plug

Symptoms: After the spark plug is damaged, you can obviously feel that the engine power is insufficient, the refueling is slow or there is a car accident, and the exhaust pipe will make a "sudden" sound, and the HC in the exhaust gas is seriously exceeded.

Solution: When you find that your car has the above symptoms, you should immediately go to the repair shop to check the spark plug and replace it if necessary. It is recommended to check and replace the spark plugs every 30,000 kilometers.

Maintenance price: the working hours for replacing spark plugs are 160 yuan/piece. Material cost 48 yuan (platinum)/piece.

7. The damage of the outer ball head of the steering rod leads to abnormal sound at the lower part of the chassis, and the steering wheel vibrates synchronously.

Symptom: When the outer ball head of the steering rod generally travels about 40,000 to 60,000 kilometers? There will be looseness between the ball head and the socket, which will directly affect the comfort and safety of the car when driving. If you drive on a bumpy road? square

Will there be an abnormal sound of "dong, dong" on the plate? If this happens, it may be that the ball head of your car hem has been damaged. If it is not replaced in time, the ball head will be separated from the socket and the vehicle will lose its handling.

Solution: Does the outer ball head of the steering rod need to be replaced in time? Or what? When driving at high speed, the ball head is separated from the socket? Directly endanger your life.

Maintenance price: 40 yuan/set of man-hours for maintaining this project? Material cost is 425/33 1 yuan/set.

8. Oil leakage and water leakage occurred in the upper part of the engine.

disease

Shape: There are oil and waterway at the joint between the engine air inlet and cylinder head of Buick GL8 car. The air intake gasket is easy to age in high temperature and harsh environment. After aging, some will leak coolant and engine oil, and some will have a cooling system.

There is oil in the system, and some oil may be mixed with coolant. In severe cases, the cooling system and lubricating system will be connected, and the coolant and lubricating oil will be mixed together, resulting in poor lubrication of the engine and damage.

Solution: When you find that your car has the above phenomenon, you should go to the repair shop to replace the air inlet in time for repair.

Maintenance price: the man-hour cost of maintaining this project is 1.200 yuan, and the material cost is 38 1 yuan.

9. Damage and leakage of high-voltage lines

disease

Form: When the engine is running, the high-voltage line must pass through the voltage of 8- 12kV, so the high-voltage line is required to have good insulation performance. Buick has a high temperature because the high voltage line is arranged above the engine. In this environment,

High-voltage lines are prone to aging, which reduces insulation performance and leads to leakage. When the high-voltage line is aging and leaking, you can obviously feel that the engine power is insufficient, and when driving is accelerated, the exhaust pipe will make a "sudden" sound and discharge waste gas.

HC seriously exceeded the standard. After opening the cover at night, the engine was started to accelerate rapidly, and blue sparks could be seen beside the high-voltage line.

Solution: When the above phenomenon occurs, the high-voltage line should be replaced in time.

Maintenance price: the man-hour cost of maintaining this project is 120 yuan, and the material cost is 363 yuan.

10. Because the EGR valve is damaged, the engine fault light is on.

Symptoms: Due to air quality, a lot of carbon remained in the EGR valve during long-term operation, resulting in the EGR valve being stuck. When the combustion chamber doesn't need waste gas dilution, the EGR valve can't be closed in time, which leads to the engine shaking at idle speed, lighting the engine fault light, and even causing the automobile to malfunction or not idle.

Solution: If the above phenomenon is found during driving, you should go to the repair shop to replace the EGR valve in time. After replacement, program the electronic control unit and the engine will return to normal.

Maintenance price: the man-hour cost for maintaining this project is 160 yuan and the material cost is 5 19 yuan. Word of mouth dedication!

Please adopt!