Why does the steering wheel squeak after it is killed? What is the reason?

First of all, it is necessary to distinguish between normal and abnormal sounds. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

On the issue of abnormal noise of automobiles, it is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are reasonable abnormal noises. Only nearly 20% of the vehicles that went to the repair shop to detect abnormal noises really had problems. Models equipped with turbocharged engines are different; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, learn to distinguish the abnormal noise of the car and avoid wasting time and energy.

Second, the identification method of car noise:

In practice, due to the limitations of working conditions, it is difficult to measure the sound of the car with special instruments, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, we must first distinguish between normal sound and abnormal noise. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.

1. This situation generally appears in the model of mechanical hydraulic power steering, which is a very common way of steering power in the past, referred to as HPS in English, with mature and reliable technology and low cost. This type of steering power assist converts a part of the engine's power output into hydraulic pump pressure, which exerts auxiliary force on the steering system to steer the tires. When the steering wheel is not turned, the pressure in the chambers on both sides of the piston is the same and it is in equilibrium.

When the steering wheel rotates, the mechanical control valve connected to the steering column will be opened or closed accordingly, one side of the oil will no longer pass through the hydraulic cylinder and directly flow back to the oil storage tank, the other side of the oil continues to be injected into the hydraulic cylinder, the pressure difference between the two sides of the piston will be pushed under the action of the hydraulic force, and then produce auxiliary force, at this time we will feel that the steering wheel is not so laborious.

2. The steering pump drives the belt to slip. The steering pump is driven by a belt, and if the friction between the belt and the pulley is too small, the belt will slip on the pulley, and there will be a squeaky sound at this time. It may be caused by loose belt adjustment, excessive wear of the grooves of the pulley, or the new belt does not fit well with the old pulley.

A simple way to tell is to pour a little water on the belt when there is a noise, if the noise goes away, it means that the belt is slipping. At this time, first adjust the tension of the belt, if there is still a sound after adjustment, you can use it for a period of time to make the belt and the pulley fully match and then see if it is still ringing, if it is still ringing, you have to replace the pulley.

What to do if the steering wheel of the car is abnormal.

1. The sound of rebounding the clip after the turn signal.

2. The sound of the dust jacket of the direction column.

Whether you are in place or driving as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you should check the steering post dust jacket, once the steering post dust jacket lacks lubrication, it will produce a dry friction sound, you just need to apply some butter in the dust jacket This sound will disappear.

In this case, the ball joint of the balance rod should be loose, the force of the front suspension system is constantly changing when the car is steering, the internal stress accumulates, and the stress increases after steering to a certain extent, resulting in instantaneous displacement of the ball joint loosening and abnormal noise. When the car is in a low-speed or stopped state, the steering system and suspension system are most stressed, and when the steering angle increases to a certain extent, this stress causes the loose parts to slip and cause vibration. It is very likely that the plane bearing under the steering wheel is broken, the plane bearing is also called the pressure bearing, in the front shock absorber top and the body connection part, its working principle is that the shock absorber rotates with the wheel when the car is turning, and the plane bearing is needed between the shock absorber and the car body to complete the rotation.

If there is such an abnormal noise, it is necessary to check and repair it in time, otherwise it may eventually cause the steering wheel to not rotate.

There will be a sound when the steering wheel is killed because: 1. The plane bearing under the steering wheel is broken; 2. The ball joint of the balance rod tie rod is loose, the force of the front suspension system is constantly changing when the car is steering, the internal stress accumulates, and the stress increases after turning to a certain extent, resulting in instantaneous displacement of the ball joint loosening and abnormal noise.

The reasons for the abnormal sound of the steering wheel are as follows: 1. The sound made outside the car: 1. The plane bearing of the shock absorber lacks oil

Open the front cover to hear if the sound comes from the position of the top seat of the shock absorber, if it is the plane bearing of the shock absorber, you can apply some butter on the plane bearing, if it still rings after coating, it can only be replaced. 2. The balance bar glue is loose: check whether the balance bar glue is available.

The problem of the direction machine, the direction must be left with a margin, can not be often killed, which may cause damage to the direction machine, if the sound is relatively loud, it is best to send the 4S shop for detailed testing.

Hello, this sound should be a normal booster pump sound, as long as the sound is not loud, you can use it with confidence.

There is a squeaking sound after the steering wheel is killed, and if the car is not heated up before starting, the car will make a sound due to the design of the body, such as Ackermann's angle being too large or too small. After the car is started, the owner can observe whether the sound will still occur, and if the sound disappears, it is a normal phenomenon. If this sound is more harsh, and after the vehicle is started, not only does it show signs of improvement, but also makes a more unpleasant sound, then it is likely that the vehicle has broken down and the owner needs to repair it in time.

There are many car owners who will hear a squeaky sound after the steering wheel is killed, and the owner only needs to rule out whether it is caused by a fault.

1. The abnormal noise of the front wheel of the vehicle may be due to the problem of vehicle design, and the Ackerman angle is too large and too small

There are many drivers who do not have the habit of heating up their cars before driving. Especially in the cold winter, when the parts of the vehicle are expanding and contracting, there may be a squeaky sound when the vehicle is just started. The owner can wait for the vehicle to warm up and drive the vehicle for a distance without this sound.

Second, if the squeaking sound of the vehicle is too unpleasant, it is considered that the internal parts have been damaged

The owner can also judge whether there is a problem with the body from the volume and position of the sound, and after the vehicle is started, the squeaking sound is getting louder and louder, which means that the car has broken down. It may be caused by insufficient lubricating oil for the vehicle's hydraulic assistance and excessive wear of the gear parts. The owner may wish to do a full body maintenance of the vehicle to avoid this problem.

Third, safe driving is no trivial matter, the driver finds that the vehicle is faulty, and needs to be repaired as soon as possible

If the driver finds that it is not the cause of the hydraulic assistance, but that a sound occurs in another position, then it needs to be taken seriously. Drivers can go to the 4S shop to inspect the car, find the location of the abnormal sound, and replace or repair a certain part. By the way, adjust the brake part so that it does not make an unacceptable sound due to excessive friction of the brake.

So, do you know what breakdowns generally occur when cars are driving?

It may be because the parts are loose, or it is because the parts are aging, so when we encounter this situation, we must send the car to a professional car repair shop for repair.

Mainly because the steering wheel has not been cleaned for too long, so a lot of dust has accumulated. It will make a noise, so you can clean it up at this time.

It may be that the inside is broken, and you have to check it more to find the position and replace the steering wheel.

There is a squeak after the steering wheel is turned off. If the vehicle does not heat up before starting, the vehicle will make sounds due to the body design, such as the Ackerman angle being too large or too small. After the body starts, the owner can observe if there is a sound.

If the sound goes away, this is normal. If the sound is harsh and there is no sign of improvement after the vehicle is started, and it will make a more harsh sound, then it is likely that the vehicle is out of order and the owner needs to repair it in time. Many car owners will hear a squeak after the steering wheel fails.

The owner only needs to rule out whether it is caused by a fault.

When the steering wheel is turned off, it usually makes an unusual noise. This abnormal noise can come from aircraft bearings, suspensions, or steering gears. If the abnormal noise comes from the steering machine, the steering machine needs to be replaced to eliminate the abnormal noise.

Drivers are advised not to step on the steering wheel while driving. If they kill them, they can go back a little, which is good for the servos. Motorists are advised to avoid steering in place during normal times, and it is best to turn the steering wheel back to its original position before stopping.

If there is an abnormal sound in the aircraft bearing, only the aircraft bearing needs to be replaced.

The cost of replacing plain bearings is relatively low. Many drivers are not in the habit of hot driving before driving. Especially during the cold winter months, when vehicle components expand and contract in hot and cold conditions, the vehicle may squeak when it is first started.

The owner can wait for the vehicle to heat up and drive the vehicle for a certain distance, so there will be no such sounds. After opening the bonnet, the roof of the tower was visible, on which two front shock absorbers were fixed, and on the roof of the tower there were flat bearings. During steering, the front shock absorber also rotates, and so do the plane bearings.

If the aircraft bearing is poorly lubricated, there will be an abnormal sound after the steering wheel is turned off. Aircraft bearings usually have dust covers on them. Riders must not lose this cover.

This cover prevents dust from entering the aircraft bearings. Car owners can also tell if there is a problem with the body based on the volume and position of the sound. After the car starts, the squeak gets louder and louder, which means that the car is out of order.

This can be caused by insufficient lubricants in the vehicle's hydraulic power and excessive wear and tear on gear parts. Car owners may want to have their vehicle serviced throughout their body to avoid this problem.

The probable cause is a problem with the power steering oil. Power steering oil is also known as hydraulic fluid. The power of the steering system comes from the hydraulic oil, if the hydraulic oil becomes dirty and deteriorates, the oil film formed by the development and change can not meet the normal working intensity, and after the deterioration, the lubrication performance of the hydraulic oil decreases, resulting in the aggravation of friction between metal parts and the reduction of the life of the parts, which may lead to the situation that the steering wheel makes a noise when steering.

In this case, there is generally a problem with the oil cylinder of the steering machine, so there will be an abnormal sound when it is killed.

Because the gear tooth condition of your steering machine is a bit big, and the bearing is broken, so there will be a sound.

Hello, the whining sound of the car hitting the steering wheel is caused by the following reasons:

First, if it is a sound in the car.

1. The sound of rebounding the clip after the turn signal.

If the steering wheel will have this sound after hitting the steering switch, it is the sound of the rebound clip of the turn signal automatic return mechanism, and this sound is normal. If you hit the steering wheel, there will be a pimple, and the steering wheel will turn around and it will appear three pimple sounds, because the steering column has three automatic return card positions in a circle, so this sound will appear. As soon as you turn off the turn signal, the sound will disappear.

2.The sound of the direction post dust jacket.

Whether you are in place or driving as long as you hit the steering wheel, you will hear the sound coming from under the steering wheel, you must check the steering post dust jacket, once the steering post dust jacket lacks lubrication, it will produce a dry friction sound, you just need to apply some butter in the dust jacket This sound will disappear.

3.The sound emitted by the interference of the airbag hairspring.

When playing the direction, the sound is emitted from the steering wheel, most of this problem is caused by the interference of the airbag hairspring in the steering wheel, remove the steering wheel airbag hairspring and apply some butter to see if it still sounds, if it still rings, replace the airbag hairspring, because the airbag hairspring is damaged.

Second, if it is a sound outside the car.

1.The sound of the flat bearing of the shock absorber.

Hit the steering wheel to hear the sound is made from many outside the car, this may be the sound of the plane bearing of the shock absorber is short of oil, you just need to open the front cover to listen to whether the sound is from the position of the shock absorber top seat, so that you know whether it is the sound of the plane bearing of the shock absorber, the plane bearing of the shock absorber sounds, you can apply some butter on the plane bearing, if it is still loud after coating, it can only be replaced.

2.The sound of the glue loosening of the balance bar.

The sound is not emitted from the plane bearing of the shock absorber, it is necessary to check whether the balance bar rubber is loose or damaged, the balance bar rubber is loose and damaged, not only will it sound when playing in the direction, but also make a sound when crossing uneven roads, and the loosening of the balance bar rubber can be solved by adding a gasket, and if it is damaged, it can only be replaced.

Fourth, the direction is fluttering. It is often caused by the front wheel swing head in driving, when the vehicle reaches a certain high speed, the reasons for the shaking or oscillation of the steering wheel are: the dynamic balance of the front wheel assembly is destroyed due to the pad tire repair or tire repair, the transmission shaft assembly has parts loose, the dynamic balance of the transmission shaft assembly is destroyed, the shock absorber fails, the leaf spring rate is inconsistent, the steering system parts are worn loosely, and the front wheel is not properly calibrated.