When the water temperature is low at the beginning, it is generally better to drive

The correct way to warm up the car should be 30 seconds to one minute after starting. However, at this time, do not drive at high speeds, keep the speed at a low speed, and the engine speed should not exceed 3000 3500 rpm. Generally keep 2000 rpm.

Otherwise, the intense wear and tear on the engine and gearbox will not be restored. Wait for the engine temperature to rise to normal operating temperature before resuming"Personal habits"The driving method is sufficient.

Warm up cars are needed in both summer and winter, and the warm-up time in winter is longer than in summer. After a night of static use of the engine, the lubricating oil on each friction surface has basically disappeared, and the oil film protection has been lost; The low temperature increases the viscosity of the lubricant, resulting in poor adhesion and flowability, which increases the resistance of the engine when it starts. Driving at this time will increase the load on the engine and increase unnecessary wear.

Studies by authoritative institutions have shown that the amount of wear and tear of the engine during cold start accounts for about half of the total wear. Normal idle warm-up can reduce this wear and tear, which can extend the life of the engine. At low temperatures, the metal will show less elasticity and wear resistance, and only at normal operating temperatures can the engine achieve normal mating clearance and maintain optimal working condition.

The water temperature of any car is the same as the surrounding environment when it is first started. Now the season is about 20-30 degrees. The water temperature gauge is at the bottom, which is perfectly normal.

Unless your car has just finished running and the antifreeze in the tank is still hot, you don't stop long before you continue to drive away, at which point the ignition water temperature is close to the water thermometer reading you see on the road, about 90 degrees.

After driving for a period of time, heat is generated due to the work done by the engine, which conducts to the water tank, causing the temperature of the antifreeze in the water tank to rise. But there is a limit to the rise, that is, it cannot boil. Therefore, when the fan is close to the high limit, it will automatically rotate to cool down, and the automatic air intake when driving will automatically stop until the water temperature drops to a safe value.

And so on and so forth.

So the normal value you say is that the water temperature is normal after driving for a period of time is actually the temperature when the engine is working normally. After a long stop, as soon as it is started, the water temperature gauge pointer is pointed at the lowest. It should be noted that during the drive, the water temperature is higher or lower than the normal value range you usually see, which indicates that it is abnormal, and you need to go to the 4S store to check the situation.

Don't drive, heat the floor for 5 minutes, and the speed is between 1500 and 2000.

Under normal circumstances, the thermostat will be opened when the water temperature reaches more than 80-90 degrees, and the cooling water system will be circulated for a large period of time, and the cooling water is a small circulation before that, in order to preheat the engine. It is recommended to check and replace the thermostat.

Dear, hello, the high water temperature as soon as the vehicle starts may be due to the following reasons: 1. Insufficient coolant Coolant leakage or lack of coolant will cause the engine water temperature to rise, then we should check the coolant situation, if it is insufficient, first add it to the appropriate location, and then after a few days to check whether the liquid level drops seriously, if there is, then we have to find the leakage location. 2. Heat dissipation fan failureIf the heat dissipation fan fails, when the vehicle is running at high speed, the heat generated cannot be transferred to the antifreeze in time and affect the heat dissipation, which will then lead to an increase in the temperature of the antifreeze, resulting in problems such as boiling the pot. Spring first 3, circulating water pump failure pump failure has several situations of bearing locking and impeller damage, bearing locking is relatively rare, impeller damage is common impeller cracking or impeller from the pump shaft loosening, resulting in coolant circulation speed slowdown, easy to cause engine temperature too high failure.

4. 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 circulation range of the water to adjust the heat dissipation capacity of the cooling system and ensure that the engine works within the appropriate temperature range. If the thermostat fails, then the car's cooling system may not be able to circulate largely, causing the water temperature to rise. 5. Poor heat dissipation of the water tank, I believe that some owners have tried to use water as coolant, once or twice there is no big problem, remember to clean the cooling system and replace it with coolant, if you use water for a long time, it will lead to rust in the engine and water tank, and the water tank will have poor heat dissipation.

This situation is quite normalIt is especially common when driving on highways for long periods of time in winter. The main reason for this problem is that the vehicle is driving at high speeds, and the wind will effectively improve the cooling effect of the intercooler, so the water temperature will hover between 80-90 degrees. At the same time, it cannot be ruled out that the water temperature sensor fault causes the coolant to be in a large circulation state all the time.

If the water temperature drops suddenly and sharply while driving, then you need to go to the repair shop as soon as possible to check whether the water temperature sensor is faulty. If there is a fault, it should be replaced in time, otherwise it will lead to increased wear and tear on the engine.

The water temperature is normal at idling, and the water temperature is low when running.

This situation is very normal, it is not a mechanical failure, so it is not too much to worry about. Since there is no wind to dissipate heat when idling, the water temperature is kept at around 90 degrees Celsius. If you drive at high speeds for a long time, the wind will effectively improve the heat dissipation effect of the intercooler, so the water temperature will be reduced.

If the temperature is cooler on the day, the water temperature will drop even more.

Normal. When running, the engine speed is high, the heat production is high, and the water temperature is also high. When idling, the speed is generally only about 600 rpm, the heat production is less, the water temperature naturally drops quickly, and the low water temperature indicates that your car's cooling cycle is very good.

It's normal, as long as it's not high, it's fine.

Normal. The idle speed of the car is the minimum speed established to ensure that it does not turn off and can run smoothly, as long as these two conditions can be met, the lower the idle speed is the better. Some people say that their car is only idling at 500 rpm, is there a problem?

As long as the engine can run smoothly, without shaking or stalling, it is possible. The lower the idle speed, the more fuel-efficient, because the idle car must be parked there, or it does not need to consume fuel to drive. If the idle speed is high, there is only one downside, and that is fuel consumption.

Most cars idle between 600-850 rpm, with 700-800 rpm having the most.

The water temperature is normal when eating and running, but the water temperature drops when idling, is it normal? It depends on your heart that the water temperature is normal when you run, and then drops when you idle.

The water temperature is normal at 80 or 90 degrees, the engine load is small when idling, and the temperature rises quickly when the load is large, as long as the water temperature is within the normal range.

The reason why the water temperature of the engine is too low is usually that the thermostat is damaged or the cooling fan is constantly running.

1. The thermostat is damaged.

The thermostat is a part that automatically acts as a valve according to the water temperature of the engine, and is generally installed at the outlet of the radiator and the inlet of the water pump. When the coolant temperature is low, the thermostat blocks the low-temperature cooling water from the radiator so that it cannot enter the engine water jacket, and the water temperature in the water jacket can rise quickly, which is often referred to as a small circulation.

If the water temperature rises to a certain temperature, the valve gradually opens, and the coolant in the radiator begins to circulate again, so that the coolant flows through the radiator, begins to slowly increase the water temperature, and dissipates heat to the atmosphere through the radiator, keeping the engine water temperature at the appropriate temperature, which is the big cycle.

If the thermostat fails, the valve does not close, and the coolant is always circulating high, the water temperature of the engine may be too low. Or some cars simply remove the thermostat in order to lower the temperature when the water temperature is high in summer, so that the water temperature of the engine will also be very low.

2. The cooling fan rotates frequently.

Then there's the cooling fan. For electronic fans, circuit failures cause the electronic fans to rotate constantly; In the case of silicone oil fans, damage to the silicone clutch will also cause the fan to rotate constantly. These faults can lead to low water temperatures.

Dear, hello, I am a vehicle problem consultant car busy man, I have seen the problem you consulted, please wait patiently for about five minutes, and reply to you immediately, thank you! 

Dear, good evening, I'm glad to be able to answer for you, the water temperature is normal when the car is parked, and the water temperature is getting lower and lower when running may be caused by the thermostat being always open, under normal circumstances, the thermostat will be opened when the water temperature reaches more than 80-90 degrees, at this time the cooling water system is a large circulation, before this cooling water is a small circulation, in order to preheat the engine, it is recommended to check and replace the thermostat. Hope mine can help you, thanks!