Why does the car make a screeching sound when the air conditioner is turned on?

Under normal circumstances, the car will not make harsh noise when the air conditioner is turned on, and the noise indicates that there are the following problems: there is a noise made by the belt slipping, especially when accelerating, the noise is greater; The other is the noise of the magnetic plate of the air conditioner compressor due to the weakening of the magnet suction of the magnetic plate rubbing against each other, but it is different from the noise of the belt, and the noise of the magnetic plate is the sound of iron and iron rubbing.

1. The air conditioning belt pulley and the transmission belt deviate, and a sharp friction sound will be transmitted in the whole process of deviation, check whether there are oil stains on the transmission belt, and if it is oil stains, the transmission belt will be cleaned up and tidy. If not, it is necessary to adjust the anchor bolts of the refrigeration compressor to make the transmission belt of the refrigeration compressor tighter, so that the sliding friction can be expanded.

2. If the transmission belt is loose and there is a sound, you can clamp the tension tightness of the transmission belt by hand, which is very loose and tight, if it is due to the use of the transmission belt for a long time, it must be replaced.

3. If the tensioner of the transmission belt is destroyed, there will be a sound, and the new tensioner must be replaced.

4. The sound caused by the clutch slippage of the refrigeration compressor, or the sound caused by the rolling bearing of the refrigeration compressor, must be removed to check what is going on.

5. The blower motor and ventilation duct will also cause noise when dirty things enter, and the blower motor and ventilation duct must be cleaned.

Distinguishing common faults is generally a problem for blower motors to make noise inside the car, and the sound outside the car is caused by common faults such as belt pulleys or refrigeration compressors. If you don't understand the disassembly process, if the internal components of the air conditioner are destroyed, it is best to go to the car 4S shop for maintenance, and if you accidentally destroy other components, it will increase the damage.

If the air conditioner pulley slips with the belt, it will make a sharp friction sound during the slipping process, check whether there is oil stain on the belt, and if it is oil stain, the belt will slip and clean. If not, you need to adjust the position bolts of the compressor to make the belt of the compressor tighter, which can increase the friction.

The head bearing is aging, replacing the bearing can solve the problem, and it is possible that the belt is loose and causes abnormal noise.

What is the reason for the abnormal noise of the car air conditioner?

The compressor of the car air conditioner is damaged, due to lack of lubrication, wear of the rotating shaft, failure to compress air normally, or air leakage. When there is a problem with the air conditioning compressor, the air conditioning system in the car will have symptoms of abnormal noise or no cooling.

The air outlet of the air conditioner is blocked.

Fan blades are worn.

The car makes a screeching sound when the air conditioner is turned on, also because it will combine with the wind when the air conditioner is turning, and if the wind is too strong, there will be some noise.

In general, the possible causes of abnormal noise in automobile air conditioners may be as follows:

1. The sound caused by problems in the compressor bearings and internal plungers inside the compressor itself.

2. If there is an abnormal sound after switching on and off the compressor, it may be due to the slippage of the air conditioner belt, the excessive tensioning force of the belt tensioner wheel, etc.

3. If there is a problem with the high-pressure pressure switch of the air conditioner, the compressor will open and close intermittently, and there will also be abnormal noise.

4. The installation bracket of the air-conditioning compressor is loose or the compressor itself is damaged, resulting in abnormal noise.

5. The electromagnetic clutch slips due to improper clearance of the compressor pump head, excessive wear, oil stain on the mating surface, improper coil installation, low battery voltage, etc., resulting in abnormal noise.

6. Abnormal noise caused by excessive wear or damage of the blower motor, foreign matter in the blower, etc.

7. The cooling oil of the air-conditioning system is too little, so that the internal lubrication of the air-conditioning compressor is insufficient, and the fire plug is dry grinding, or close to dry friction, etc., resulting in abnormal sound of opening the air conditioner.

To solve this noise, it is necessary to replace the blower bearing, or apply a part of the grease to the blower bearing. When cleaning the air conditioner, be sure not to use inferior cleaning agents, which will damage the blower bearing.

The squeak of the compressor of the car air conditioner may be the sound of the compressor belt, or the tensioner of the compressor belt. The compressor is a vital component of the air conditioning system, and the air conditioner cannot be cooled without the compressor.

Car air conditioning is a very important comfort configuration on the car, I think the refrigeration principle of air conditioning is very simple, after pressing the AC button, the compressor clutch will be combined, at this time the engine will drive the compressor to rotate, so that the compressor can continue to compress the refrigerant and deliver the refrigerant to the evaporation tank.

The refrigerant expands and absorbs heat in the evaporation box, so that the refrigerant can cool the evaporation box, and the cooled evaporation box can cool the air blown by the blower, so that the air outlet of the air conditioner can blow cold air.

The heating principle of the air conditioner is even simpler, after turning on the heating function, the high-temperature antifreeze in the engine will flow through the warm air water tank, and the wind blowing from the blower will also pass through the warm air tank, so that the air conditioning outlet will blow warm air.

The blower is also a vital component in the air conditioning system, if the blower bearing has poor lubrication, then after the air conditioner is turned on, the blower will squeak and squeak.

Under normal circumstances, the car will not make harsh noise when the air conditioner is turned on, and the noise indicates that there are the following problems: there is a noise made by the belt slipping, especially when accelerating, the noise is greater; The other is the noise of the magnetic plate of the air conditioner compressor due to the weakening of the magnet suction of the magnetic plate rubbing against each other, but it is different from the noise of the belt, and the noise of the magnetic plate is the sound of iron and iron rubbing. If the belt is slippery, you can adjust the tightness of the belt to solve it (of course, if the belt is aging badly, you need to change the belt), if it is a magnetic disk, only the electromagnet assembly is replaced, and it may not be accurate to provide you with reference.

Hello dear and thank you for waiting. Like the squeak of the air conditioner in the car is very harsh, then there are two main reasons for this, the first is because the belt of the vehicle's air conditioning compressor has slipped, so this first thing is to check the tightness of the belt of the compressor, and whether the belt is aged. The second aspect to consider is that the electromagnetic clutch of your air conditioning compressor has slipped, if there is no problem with the belt of the air conditioner compression voltaic machine, then you can check whether the electromagnetic balance clutch of the compressor is worn and slipped, and you need to consider replacing the electromagnetic clutch or replacing the compressor.

Summary. Kiss, give you an extension <>

1.The air conditioning system needs to be inspected regularly and anomalies are found to be repaired and replaced. 2.

Regularly replace the filters in the air conditioning system and the use of refrigerant. 3.Do not use the air conditioning system for a long time to reduce wear and damage to the bearings of the air conditioning compressor.

4.Lubricate by adding lubricating oil regularly. <>

The car squeaks when the air conditioner is turned on, which is harsh.

Dear, glad to answer for you! <>

The reason why the car squeaks when the air conditioner squeaks is very harsh is 1The air conditioner compressor is faulty, and the traces can cause the air conditioning system to not work properly, causing a squeaky sound. 2.

Fluorine leakage occurred in the hail fluid of the air-conditioning system, resulting in the air-conditioning system not working properly. 3.The air conditioning system filter is clogged resulting in an oh <>

Go to ** repair? Good.

You generally go to a repair shop or a 4S shop.

Dear, you can repair it at 4S o'clock.

Kiss, okay

Dear, go to the 4S shop for repair.

The 4S shop said I had a broken motor.

Dear, when you don't turn on the air conditioner, will there be any abnormal noise?

No. Kiss, okay, that's not a problem with the motor.

Dear, if it's a motor problem, there will be an abnormal sound when you don't turn on the air conditioner Okay, thank you.

Kiss, give you an extension <>

1.The air conditioning system needs to be inspected regularly and anomalies are found to be repaired and replaced. 2.

Regularly replace the filters in the air conditioning system and the use of refrigerant. 3.Do not use the air-conditioning system in the socks when the branches are long, so as to reduce the wear and damage to the bearings of the air-conditioning compressor.

4.Lubricate by adding lubricating oil regularly. <>

Summary. If the belt is slippery, you can adjust the tightness of the belt to solve it (of course, if the belt is aging, you need to change the belt), if it is a magnetic disk, only change the electromagnet assembly.

When the car turns on the air conditioner, it will make a screeching sound when the air conditioner is turned off. What's going on!

Hello, the air conditioner does not make a screeching sound.

It is possible that the belt is slipping and it is noisy, especially when accelerating.

It is also possible that the magnetic disc of the air conditioner compressor is weakened by the suction of the electromagnet laughing and burying, and the magnetic disc rubs against each other, but it is different from the noise of the belt, and the noise of the magnetic disc is the sound of iron rubbing against the iron brother is very harsh.

These are the two possibilities for screeching.

It's after turning off the air conditioner,The center console will make a very harsh sound,This situation did not occur before,This situation occurred today,After opening the vacancy friend calendar,It will make a sound when it is closed。

Will this have any big impact?

If the belt is slippery, you can adjust the tightness of the belt to solve it (of course, if the belt is aging, you need to change the belt), if the yard is and the magnetic disk, only the mold is replaced by the mold, and the magnet is completed.

It is recommended to rest as soon as possible, and it will be summer soon It's time to use the air conditioner often, so if there is a problem with the belt, it would be good to change it.

The air conditioner of the car is more prone to problems, and a common situation is that the car air conditioner squeaks very harshly. So what's the matter with the squeaky sound of the car as soon as the air conditioner is turned on?

1. It may be the sound of the electromagnetic clutch of the compressor of the car when it is running. The compressor often operates from low speed to high speed under high load, so the clutch of the compressor is relatively easy to wear, and the clutch of the compressor is relatively close to the ground, which is easy to be splashed by mud and rain, and if the clutch is damaged, then the air conditioner will make a sound when it is used.

2. The belt inside the air conditioner is loose. The belt inside the air conditioner is often subjected to alternating temperature changes of hot and cold, so the belt is easy to loosen in the case of thermal expansion and contraction, and the belt continues to operate after it is loose, which is easy to squeak.

3. The lack of lubricating oil of the air conditioner may also cause the air conditioner to squeak when it is running, and the owner can add some lubricating oil to solve this situation.