The 04 Elantra is open and sometimes suddenly hot

In the event of this type of failure, there are several aspects to check.

1. Circulation of heat dissipation.

Second, the cooling system itself is faulty.

3. Engine failure.

Fourth, air conditioning heat dissipation, often see the water tank heat dissipation problem, part of the water tank can solve the problem, but there are still so many cars please water tank can only make the phenomenon better, and even some masters remove the thermostat to improve the water circulation (do not support this practice) because the water tank and the air conditioning radiator are installed together, usually the air conditioning radiator in front, the air conditioner will heat up as soon as the radiator works, and the external cooling fan rotates to suck the hot gas into the engine, so that the heat of the radiator is applied to the water tank at the same time, So the temperature will become higher, so you need two fans to dissipate heat, the vehicle travels 20w kilometers, if the cooling system is not well maintained, then there is a lot of scale inside, the more scale is not conducive to taking away the heat, it is a little difficult to completely solve this fault by cleaning the water tank alone, and all the waterways need to be cleaned, but the project is relatively large, and even the engine needs to be decomposed to come thoroughly, and the other is that the sponge between the water tank and the radiator is gone, which affects the way the wind enters and the effectiveness of heat dissipation, that is, the four sides between the water tank and the radiator(There is usually no sponge normal phenomenon on the bottom side), of course, the installation of the engine bottom guard plate or the engine cover soundproof cotton also hinders the heat dissipation of the engine, the surface of the water tank and condenser is blocked, the air conditioning pressure is high, resulting in an increase in heat, and the last one is that the engine has been flushed, or the cylinder head deformation has not been replaced during the overhaul, and the cylinder head deformation of the general maintenance plant is ground and flattened, but it is not known that this is equivalent to reducing the combustion chamber area, then the compression ratio will increase, The compression ratio increases a lot of heat compared to the original, and there may be no problem when it is just repaired, but when the weather is hot, or when the engine is used at high power for a long time, the water temperature will rise, and the lack of maintenance of the cooling system will increase the scale, then it is the last straw that breaks the camel's back.

Clogged water tank or thermostat If it can help you, please set it to, thank you!

Hello, please check the thermostat.

The high temperature of the modern Elantra air conditioning compressor is caused by poor heat dissipation of the condenser or blockage of the pipeline. After the refrigerant is discharged, the lines can be thoroughly cleaned and the desiccating can be replaced. It can be cleaned with the thinner used for painting.

After removing the ruler holding condenser, thoroughly clean the dirt on the condenser and water tank. Then, after all the parts are installed, the time for pressure and vacuum pumping should not be less than half an hour, and then the refrigerant can be refilled. When the air conditioner is officially used before the summer, go to the repair shop to clean the condenser and water rotten reed tank with compressed air, so as to avoid poor heat dissipation leading to a decrease in refrigeration efficiency, high temperature and damage to the compressor, and an increase in engine fuel consumption.

The Elantra 22 models have common problems in the design and manufacturing process, with the most common problems being engine failures, including ignition system failures and cooling system failures. These failures led to problems such as engine overheating and low oil pressure, which could eventually lead to a complete engine failure.

In addition, the Elantra 22 cars also have the problem of braking system failure. These failures can lead to poor braking or even failure to brake properly, posing a threat to the safety of the driver. There are other issues, such as electrical faults and suspension system failures, that can also affect the performance and reliability of these cars.

Despite these problems with the Elantra 22 models, that doesn't mean they're completely worthless. If these issues are fixed in a timely and effective manner, these cars can still provide good performance and reliability. Therefore, if you own an Elantra 22 car, you should check and fix these issues in time to ensure that your car is safe and secure on the road.

Hello, there are several reasons why the air conditioner is hot and cold.

First, caused by insufficient refrigerant, this can be checked whether the refrigerant is sufficient, if it is insufficient, add a little bit.

Second, it is caused by poor working of the air conditioning compressor. This can only be solved by replacing the compressor.

Third, check if the cooling fan is working properly. It is recommended to go to a regular maintenance shop for professional inspection and troubleshooting. I hope it can help you, I wish you a happy car [car questions, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

The waste oil is caused by the low mixing efficiency of oil and gas and the drop in cylinder pressure.

In other words, part of the fuel is not burned, it is discharged.

In such a car condition, it will also be very laborious after changing the gas.

Therefore, it is recommended to overhaul it first, such as the situation of the intake, the throttle, the intake branch, etc.

Ignition situations such as spark plugs, ignition coils, high-voltage wires, etc.

Check the pressure of the cylinder block, the piston ring, the cylinder liner and other tightness.

1. Open the water tank cover, start the engine, and observe whether the water in the water tank rolls; 2. Remove the thermostat and check the thermostat; 3. Check whether the surface of the water tank is blocked; 4. Check the fan belt to see if the tightness is normal. The reasons for the high temperature phenomenon of the engine are: 1. The fan motor does not move or the fan clutch fails; 2. The three-way catalytic converter is blocked or the tube is ruptured; 3. The pipe of the cooling system is broken; 4. The long-term use of the water pump is worn off after the high potato type stuffiness wears out; 5. The pressure of the cover of the radiator is unstable, resulting in loose springs and the cover cannot be tightly closed.

Troubleshooting method 1Check whether the radiator fan motor is working properly; If there is any abnormality, it should be replaced in time;

2.When the engine starts, check that the temperature of the hot water pipe and the cold water pipe of the cooling system are the same. If the two are the same, it means that the thermostat is open normally, and the cooling system directly enters the large circulation. If the lease flushes them differently, it means that it is closed.

3.Excessive engine temperature can be caused by long-term driving. Please stop and take a break in time;

4.Check that the coolant is full and add if it is not enough.

Common faults with high water temperature are:

1. The antifreeze in the engine cooling system is missing, which may be the leakage point of the engine, such as water pump leakage, pipeline damage, water tank damage and so on.

2. The thermostat in the engine cooling system has failed, resulting in high water temperature. The temperature of the coolant was too high because the thermostat could not be turned on, which hindered the flow of coolant inside the engine.

3. The cooling fan in the engine cooling system is not working properly, resulting in poor heating of the coolant before dissipation. So the water temperature light is on, causing the coolant temperature to be too high.

4. The water pump in the engine cooling system is faulty, and the water pump does not rotate smoothly, resulting in a poor flow of coolant, so the water temperature light is on and the coolant temperature is too high.

The above are common fault points, and the specific fault points need to be checked to determine the vehicle.

In the event of this type of failure, there are several aspects to check.

1. Circulation of heat dissipation.

Second, the cooling system itself is faulty.

3. Engine failure.

Fourth, air conditioning heat dissipation, often see the water tank heat dissipation problem, part of the water tank can solve the problem, but there are still so many cars please water tank can only make the phenomenon better, and even some masters remove the thermostat to improve the water circulation (do not support this practice) because the water tank and the air conditioning radiator are installed together, usually the air conditioning radiator is in front, the air conditioner will heat up as soon as the radiator works, and the external cooling fan rotates to suck the hot gas into the engine, so that the heat of the radiator is applied to the water tank at the same time, So the temperature will become high, so you need two fans to dissipate heat, the vehicle travels 20w kilometers, if the cooling system is not well maintained, then there is a lot of scale inside, the more scale is not conducive to taking away the heat, it is a little difficult to completely solve this fault by cleaning the water tank alone, and all the waterways need to be cleaned, but the project is relatively large, and even the engine needs to be decomposed to come thoroughly, and the other is that the sponge between the water tank and the radiator is gone, which affects the way the wind enters and the effectiveness of heat dissipation. It is the four sides between the water tank and the radiator, (the bottom side usually does not have a sponge normal phenomenon), of course, the installation of the engine bottom guard plate or the engine cover soundproof cotton also hinders the heat dissipation of the engine, the surface of the water tank and the condenser is blocked, and the air conditioning pressure is high, resulting in an increase in heat, which will also increase the heat.

The last one is that the engine has been flushed, or the cylinder head deformation has not been replaced when overhauled, the general maintenance plant cylinder head deformation is grinding and flattening, but I don't know that this is equivalent to reducing the combustion chamber area, then the compression ratio will increase, and the compression ratio will increase the heat a lot compared with the original, maybe there is no problem just after repairing, but when the weather is hot, or the water temperature will rise when the engine is used for a long time, and the scale will increase due to the lack of maintenance of the cooling system. Then he was the straw that broke the camel's back.

Maybe it's caused by a bad engine tie!

1. Whether the steering wheel is in a state of deadlocking. The solution is simple, as long as you hit the steering wheel hard and twist the key at the same time, you can generally unlock the steering wheel lock quickly, and the ignition is an instantaneous thing.

2. Did you not return the gear to P gear when you parked? Think about it, if the D or R gear can be ignited, the jump of the vehicle at the moment of ignition is undoubtedly a huge safety hazard. Therefore, for automatic transmission vehicles (AT, CVT, AMT), manufacturers will preset this mode, and repeatedly inform in the manual:

Make sure the gear is in the P position when ignition.

3. One-button start sometimes encounters the trouble of power loss of the smart key, obviously the key is in the car, but the instrument always shows 'key matching error', this situation is likely to be the power loss of the smart key, and the start system can not sense the weak radio waves emitted by the key. Therefore, it is recommended to pick up the smart key and put it on the start button, and then press the button to start.

4. Check whether the battery has electricity. If the ignition is not ignited, it may be due to the loss of power or the expiration of the battery life due to the long-term headlights have not been turned off, and the battery is generally replaced in time according to the maintenance manual.

5. See if there is oil. If the fuel gauge shows that it is below the red line, it will not ignite. At the same time, pay attention to the quality of the oil. There have been car owners who found that there was water and mud in the fuel tank after disassembling the car, and with such oil, it is impossible for the car not to break.

6. No antifreeze is added.

Some car owners add water or inferior antifreeze to the car, resulting in a particularly cold winter, causing the entire waterway to be frozen, the engine to be frozen and cracked, resulting in the car water pump can not operate, can not catch fire, and injure other parts of the engine.

The water temperature sensor is broken, or the throttle is dirty.

If you have a problem with the oil circuit, go to the repair shop!

My Elantra taxi, cold car is not good. Initiate.

Hello dear! There are many reasons, 1) the cooling fan does not rotate. The cooling fan may be controlled by a thermostat switch; It may also be controlled by a water temperature sensor.

2) The cooling medium is not side-footed. Antifreeze: High-end cars are required to be filled with antifreeze Shiji liquid all year round; Water or distilled water: temporary substitute; The water tank cover is leaking.

3) 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.

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

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

6) 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.

1. The piston ring is poorly sealed, which leads to the gas in the combustion chamber penetrating into the crankcase.

2. Failure of the cooling system (such as coolant leakage, or poor water circulation) 3, the friction between the machinery may be aggravated.

4. Sensor failure.

The reason for the analysis: you are talking about the high temperature of the oil, not the high temperature of the water, so it is a problem with the lubrication system, and the relationship with the cooling system is not very large. This has no effect on whether to turn on the air conditioner or not, and the analysis of the problem is based on the principle.

The oil temperature is high, because the oil plays a lubricating role, so it must be related to friction, but the friction is more serious, the oil temperature will of course rise, the piston ring seal will lead to the high temperature rock back to the high pressure gas into the crankcase, the oil is in the oil pan, the temperature will of course be high, the possibility of sensor failure is not large, "it is best to look at the standard data to judge", there may be a cooling system, because the cooling is not good, the temperature of the cylinder block rises, That's why the oil temperature increases in the degree of search).

It is recommended that you go to the 4S store and ask them to check it, but the 4S store will only change things.