Cause 1: Insufficient coolant causes excessive water temperature
Insufficient coolant is the easiest to judge: just open the engine hood and look the remaining amount of coolant to find out. If the coolant level is below the “MIN” line, the coolant level is too low.
Quantity 2: The radiator is too dirty, resulting in high water temperature.
If the engine compartment is not cleaned for a long time and there is too much dust, it will cause poor heat dissipation of the water tank radiator, making the water temperature too high. Under normal circumstances, the water temperature is too high due to excess dust on the water tank radiator. Just clean the dust on the radiator to solve the problem.
It should be noted that do not use a faucet or high-pressure water gun to directly flush the water tank radiator or engine compartment, otherwise it may cause engine circuit failure and dust; comes into contact with water. It will condense and stick even tighter (click here to find out if the engine compartment can be flushed with water). To clean the dust attached to the engine compartment or water tank radiator, you need to use an air gun and use wind power to blow away the dust.
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Cause 3: The thermostat is faulty, resulting in high water temperature.
Thermostat (click to see what is a thermostat) The function of the thermostat is to automatically adjust the amount of water entering the radiator according to the temperature of the cooling water, and change the range of circulation ofe water to adjust the heat dissipation capacity of the cooling system and ensure that the engine operates within an appropriate temperature range.
If we find that the water temperature is too high during normal vehicle driving, then we can open the engine hood and touch the water tank inlet and outlet pipes with our hands to see if there is a temperature. difference ; If there is a temperature difference, it means the thermostat is faulty and cannot work properly, resulting in the water temperature being too high.
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Cause 4: The electronic fan is faulty, resulting in high water temperature.
Fan failure is also one of the reasons. so that the water temperature is too high. If the fan is not running, the water tank will not dissipate enough heat, causing the water temperature to drop.too high. There are many reasons why the fan is not working. This could be a faulty fan motor, thermostat not working, or blown fan fuse, which can cause the fan to stop working.
The car often has to be turned on twice before it can be started. I replaced the battery and spark plugs and added a battery to the engine ground wire, but it still doesn't work. What is the problem. ?
Fall car maintenance! Make sure you pay attention to these four points!
As the saying goes, “Every fall rain brings a cool breeze.” With fall rains, you'll feel the air getting slightly cooler when you wake up each morning. As fall approaches, people are prone to colds and illnesses, and cars are no exception. If they are not properly maintained, various problemsths may occur. Under conditions of increasing temperature difference between day and night, many external or internal components such as circuits, air conditioners, tires, etc. will become damaged. are prone to problems. We need to perform timely and complete car maintenance so that the car can survive. fall safely and gently.
About automatic fallFor maintenance, you should pay attention to these points, and you must not miss the following points!
1. Air conditioning cleaning is very important
In summer, air conditioners work under high load and it often rains in summer. Cars often travel on some forded roads. , causing contamination of the lower part of the air conditioner condenser. Lots of sediment, over time, will cause the condenser to rust, thus shortening the life of the air conditioner. Therefore, after the startautumn, the air conditioner must be carefully maintained. Additionally, pay attention to the maintenance of heating pipes and fans. In autumn, when the weather becomes cooler and the temperature is lower, frost appears. This season, special attention should be paid to whether the defroster air outlet under the windshield blows normally and whether the heat is sufficient. a problem, it must be solved in time, otherwise it will cause dangerous factors for driving.
2. The guide grooves of the door panes also need to be cleaned.
The precipitation some time ago and the continuous rain caused a large amount of rainwater to be transported with a lot dust and acid-base. substances along the glass. When it flows into the guide tray, the glass lifter will be weak and the glass will move up and down slowly. The reason for this phenomenon is that a large amount of duste accumulates in the rubber strips of the glass guide groove, so the glass guide groove needs to be cleaned. The car owner can use a spray bottle to spray clean water into the guide trough, but the effect will not be very satisfactory because the clean water will not clean completely and have no effect lubricant. It is therefore recommended to call a professional. cleaners, such as some major brands of glass guides. Use a reducing agent in the groove, clean the guide groove, then lift the glass up and down several times. The speed and smoothness of lifting will be very good!
3. If the tire tread is too shallow, replace it with new tires in time
In summer, when the temperature is high, to prevent the tire pressure from being too high and does not pierce. Tire pressure should be checked frequently. When the temperaturedrops in autumn, the air pressure must be replenished to keep it within the specified pressure range. At the same time, you should also check the tires for scratches, because rubber tends to harden in autumn and winter and tires are prone to leaks or punctures.
In addition, in early autumn, it often rains, and car owners have to drive on the streets on rainy days, which can easily cause the car to derail. This is because some car owners generally don't pay much attention to the tread pattern of their tires. When the tread is too shallow, the road will be slippery on rainy days and the car tires will lack friction with the ground. this time, the vehicle will derail. In this way, the brakes will not work properly, the distance will be extended and road accidents will occur. Currently, the requirements rTire pressures have also increased accordingly, so you should check the degree of wear on the tire tread. If the tire tread depth is less than 1.6 mm, replace the tire with a new one. Repaired tires should be moved to the rear wheels, and tires that have been repaired more than three times should be replaced. In addition, the tire tread also has a drainage effect. After rain, stones, sand, etc. easily stick to the tire, which will affect the drainage of the tire. In order to prevent such a situation from happening, car owners can choose waterproof tires, which should perform well.
4. Remove oxides from the battery
The battery electrode connections are prone to problems during the alternation of summer and autumn, so pay attention to maintenance. Be careful when checking. If you find green oxides at levelwater from the electrode connections, use boiling water to wash them. If these green oxides are not clean, it will cause the generator to run out of power, causing the car battery to lose power. In severe cases, the battery will be discarded prematurely or the car will not be able to start. After rinsing it with boiling water, dry the moisture with compressed air, then spray it with a special protective agent to prevent the oxidation layer from reappearing.
According to the different design structures of vehicle models, different fuel utilization methods, actual ignition phenomena and other conditions, there are many possibilities:
The starter line is abnormal and the contact is defective or loose;
The starter is defective and unable to start, for example due to internal wear excessive or excessive heat, andvs. ;
The battery itself does not store electricity, and quality reasons lead to insufficient power and insufficient ignition intensity;
The circuit between the battery and the starter is abnormal, such as looseness or poor contact;
The engine is; poorly maintained, such as the oil has not been changed for a long time or has been changed for a long time, or the viscosity is too high Cause;
Excessive carbon deposits at the throttle, spark plug. or inside the cylinder may cause;
Abnormalities in other individual electrical equipment, such as relays, capacitors, etc. ;
The generator is abnormal or there is little or no power output. power supply, leading to a risk of battery loss;
Cylinder pressure is abnormal;
Cooling water temperature sensor is abnormal;
Oil pressure insufficient, such as electronic oil pump abnormality (petrol);
Rail pressure abnormality, rail pressure sensor abnormality (petrol, diesel);
Fault of the injector such as blockage, impurities, foreign bodies and other reasons or its own quality reasons;
Oil quality failure, such as excessive content in excessive water or other impurities, causing clogging;
Fuel filter rust, blockage due to impurities, excess foreign matter causing poor oil supply, etc.;
The high pressure oil pump, oil-water separator is abnormal or contains water impurities, etc. (diesel);
The parameters of the sensors in the air intake part are abnormal;
The air filter or oil/water filter is not the original product (diesel);
All gasoline engines must be ignited to burn. The principle ofIgnition starts with understanding the ignition system, including the battery, ignition coil, distributor, and spark plugs. The function of the ignition system is to ignite the gas mixture in the cylinder to turn the engine. The principle of ignition is that direct current from the battery passes through the ignition coil to increase the starting voltage and is distributed to the spark plugs of each cylinder via the distributor. The spark plug ignites the mixed gas of air and fuel in the tank. cylinder, causing an explosion to drive the piston.
Based on the actual model, we do not exclude the possibility of multiple failures. The actual model is used as a reference. After inspection and analysis, a conclusion is drawn before making a judgment.