Lifan 520 thermostat water temperature problem 10

You need to look at three problems: 1. See if the water tank is dirty, and if the water tank is dirty, there will be such a problem. 2. Put the thermostat in water and boil it to see if the thermostat is faulty. 3. Check whether there will be less water, if there is less water, the cylinder gasket will be faulty, but there are few such failures in cars now, if there is less water, you will win the lottery.

4. Water pump, see if the impeller of the water pump is damaged. 5. Check the oil dipstick, there is water in the oil dipstick, and the cylinder gasket is broken! 6. Ask the master if there is a water divider.

The reason why the water temperature warning light is on is that the engine coolant temperature is too high.

The effect of high coolant temperature on the engine.

In the process of engine work, the gas combustion temperature in the cylinder can be as high as 1800 2000, some parts that are directly in contact with high-temperature gas, such as cylinder block, cylinder head, cylinder liner, piston, valve, etc., are constantly subject to the impact of high-temperature gas, and the working temperature is very high. The mechanical strength of each part may also be reduced due to high temperature, and even cause deformation and damage to the parts, so that the diesel engine cannot operate reliably. In addition, due to the high temperature, the pressure in the cylinder is also high, so that the fresh air enters less, and as a result, the diesel engine power is insufficient due to the incomplete combustion of oxygen-deficient fuel.

2.Causes of high coolant temperatures:

1) There is too much scale in the water tank and engine jacket, resulting in poor heat dissipation and increased water temperature.

2) The thermostat is damaged and cannot be opened, so that the coolant can not enter the water tank smoothly to form a large circulation, so that the water temperature rises quickly and causes the pot to boil.

3) The pump is damaged or the transmission belt is slipped, resulting in poor working of the pump.

4) Lack of antifreeze and poor engine heat dissipation.

5) The cooling fan does not rotate or the speed is low.

3.Solution:

1) Clean the scale in the engine.

2) Check or replace the thermostat.

3) Check the water pump water volume, check or replace the water pump.

4) Add antifreeze to sufficient as prescribed.

5) Check the reason why the fan does not rotate or the speed is low.

4.Summary: The high water temperature of the engine can have a great impact on the engine, and it may damage the engine and cause great damage to the engine in serious cases.

Yes, the thermostat is turned on to have a warm air.

Lifan 620 is another key model created by Lifan Automobile after Lifan 520. As a family car, Lifan 620 has reached the standard of mid-to-high-end cars in terms of fine workmanship and detailed design, and can achieve both home and business integration. The launch of Lifan 620 will help Lifan Motors break the situation of a single product line, and the price is expected to be 7-90,000 yuan.

Lifan 620 is the main model of Lifan Automobile in 2008 and the second half of the year, after a comprehensive and strict listing evaluation before the launch, compared with the previous models in terms of quality and performance. As a strategic model of Lifan Automobile to move towards the mid-to-high-end field, it will maintain the most lethal competitive advantage to enter the car market, which is expected to have a great impact on the family car market.

The exterior design of the vehicle adopts the design concept of "sharp lines and stable shape" of European cars, with a length, width and height of 4550mm 1705mm and a wheelbase of 2605mm.

Seven pairs of aluminum alloy wheels are used with 195 tires. It is equipped with an engine imported from Brazil, which has ultra-high power and fuel economy. It has a maximum power of 85 kW and a top speed of 180 km h.

There are many reasons for the high water temperature of the car, most of which are caused by water seepage in the water pipe and insufficient cooling water, such as broken fan belt, leakage of water tank or water pipe, thermostat failure, oil leakage, etc. If the car makes the pants lose engine power or turn out loud knocking, cylinder knocking and other sounds while driving, it is mostly because the engine is overheating.

The specific reasons are as follows:

The cooling fan does not turn. The cooling fan may be controlled by a thermostat switch; It may also be controlled by a water temperature sensor.

Insufficient cooling medium. Antifreeze: High-end cars are required to be filled with antifreeze all year round; Water or distilled water: temporary substitute; The water tank cover is leaking.

The thermostat is damaged. If you want to remove the thermostat, you should plug the small circulation at this time, so as to ensure that all the coolant is dissipated by the water tank; When installing a new thermostat, you should pay attention to the water hole, such as Santana does not have a water hole, at this time, a 6mm drill bit should be used to drill a hole. One function is to be used as a marker; Another function is that during the heating process of the car, the temperature difference between the two sides of the thermostat is generated, so that the thermostat is accurately opened with the water temperature.

The water tank is clogged. External blockages should be removed with water or gas; Internal blockages affect coolant circulation and create pressure, which can result in two outcomes, one is a leaking water tank or the other is a particularly high water temperature at high speeds.

Pump failure. The impeller slips or gets stuck, causing the timing belt to break; The impeller is deformed.

Cylinder corrosion. The combustion chamber and the waterway are flushed, and at this time, the water will be drained from the drain pipe or white smoke will be discharged, resulting in a frequent shortage of water in the water tank; The waterway and the oil channel are flushed (the oil is white when there is water); The waterway and the waterway are rushed, resulting in poor heat dissipation of the cylinder block, especially at high speed; Blocked waterways.

Extended Information: Solutions to High Temperature in Car Radiators:

1. Pull over, put the automatic gear into P gear, and the manual gear into neutral gear, pull the parking brake handle and turn off the air conditioner.

2. If you find that the coolant is boiling and overflowing from the radiator after opening the engine cover, please turn off the engine immediately, turn the car key to the ON position, and do not start the engine again, so that the electric fan of the radiator can automatically run to facilitate heat dissipation.

3. After cooling for a period of time, check the height of the coolant in the liquid storage tank, if there is any leakage on the coolant level, or check whether there is a break in the fan transmission belt.

1. First of all, after finding that the water temperature is too high and stopping to the side, it should not be turned off immediately, because there are many reasons for the high water temperature, but there is probably only one fault each time, if all other functions are turned off, the water temperature will be too high, damaging the engine, the accurate approach should be to idle the park, open the hood, turn on the heater, dissipate heat as soon as possible, and pay attention to parking in a cool place.

2. Next, we have to check whether the coolant is sufficient, this situation is likely to be that the owner usually does not care about forgetting to add it in time, and it should be noted that the owner must choose the same brand and model of product when adding coolant, otherwise it may cause chemical reaction due to different components and lead to the failure of antifreeze.

3. Then, we are looking at whether the cooling fan is running normally, and the failure of the cooling fan will cause the heat generated in the car engine at high speeds to be transferred to the antifreeze and not be dissipated in time, resulting in an increase in the temperature of the antifreeze. If the fan is stuck or the insurance is burned, you can solve it as soon as possible after the power failure, if it is a line problem, it can only be handed over to the professionals of the 4S shop to overhaul.

Extended Information: Car Radiator Function.

The function of the cooling system is to dissipate excess and useless heat from the engine, so that the engine can operate at normal temperature at all speeds or driving conditions.

The water tank is the heat exchanger of a water-cooled engine, which is cooled by air convection to maintain the normal operating temperature of the engine. Once the cooling water of the engine in the water tank boils and vaporizes and expands due to high temperature, and the pressure exceeds the set value, the pressure will be released from the water tank cover (a), resulting in a decrease in cooling water and preventing the cooling system pipeline from bursting.

When driving, you should pay attention to whether the engine cooling water temperature gauge pointer on the dashboard is normal. In addition, if the engine cooling fan fails and the water temperature of the engine cooling finger bend rises or the cooling system pipeline leaks, the cooling water may also be reduced.

The basic knowledge of high water temperature in a car engine is as follows:

1. Insufficient engine coolant;

2. The water temperature sensor or water temperature meter is faulty;

3. Downwind driving or long-term low-speed and high-load driving in high temperature season;

4. Ignition time too early or too late;

5. The blinds cannot be fully opened;

6. The mixture is too thin or too thick;

7. The outside of the water tank is dirty or the internal scale is serious, resulting in poor heat dissipation, and the water tank needs to be opened (cleaned) or replaced;

8. The fan clutch engages too late or the cooling fan does not work, the fan rotation resistance is too large, the blades are installed in reverse, the blades are damaged, etc.;

9. The performance of the electric fan is poor or there is no high speed;

10. Excessive carbon deposition in the combustion chamber;

11. The water pump belt is too loose;

12. There is a problem with three-way catalysis;

13. The phenomenon of "punch" is caused by air and water;

14. The thermostat is not opened well and needs to be replaced;

15. Other water pipes, elbows and water holes of the waterway are blocked;

16. The pump does not work well (the circulating water volume is not enough);

Check items: open the lid of the water storage pot on the cool car, remove the water pipe, and get on the car to see if the water comes out smoothly;

If the engine suddenly overheats during the operation of the car: it may be due to a broken fan transmission belt, a disengagement of the water pump shaft from the impeller, a leak in the cooling system (such as aging and ruptured water pipes, etc.), or a disconnection of the main valve of the thermostat.

You can judge for yourself depending on the situation.

I don't know if what you're talking about is really boiling the pot, I suggest you see if there's something wrong with the water tank lid, if it's not tightly sealed, it will be like this, I feel.

Check the lower pump thermostat fan.

1. There are many reasons for the high water temperature of the engine or even "boiling", such as damage to the electronic components of the cooling system (thermostat, cooling fan), poor heat dissipation of the radiator, insufficient coolant, etc.

2. Pull over, but don't turn off the engine immediately! Because the coolant temperature is already high and the cooling capacity has reached its limit, if the engine is turned off immediately, the boiling coolant will stop circulating (for most engines, the water pump is driven by the crankshaft).

3. Of course, if it is an electric water pump engine, it will be better), too high temperature can not be cooled, and the engine is also unbearable. If the engine is left idle for a while, the constant circulation of coolant can still reduce the impact of high temperatures on the engine.

4. Check whether the antifreeze is lacking, resulting in high engine water temperature. The circulation of the coolant, whether the circulation is not smooth. Secondly, you can also check that water temperature sensors, water pumps, thermostats, cooling fans, etc., may cause high water temperatures.

If you don't have a strong hands-on ability, you should go to the repair shop for an inspection.