The squeaky sound of Chang an Yuexiang when it was in gear

The reasons for the noise in the gear are improper operation, clutch failure, sprocket wear, and chain looseness.

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 were really faulty. In the case of a turbocharged engine, there is a must be a difference between the sound and the sound of a naturally aspirated engine; 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 they lack their own understanding of mechanical knowledge, so they can 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 make 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 sound. The normal vibration sound of each cluster system component (such as the noise on the engine surface), 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 loss of the grinding belt of the machine is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal driving 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 interference from human factors.

The squeak in reverse gear is due to the collision of the gears when the gear is in gear. Reverse gears without synchronizers are prone to this problem. Generally, there is no need to repair it.

Caution when operating:

1. The car should be completely stopped, 2. If there is a squeak, return to the neutral gear first, release the clutch and then step on it, and then hang the reverse gear, and there will generally be no sound. If it still appears, repeat again.

3. Once there is shift noise, do not force the gear, otherwise the repair cost after breaking the gear is very expensive.

When washing the car, water is sprayed on the horn, and it is generally solved by changing the horn.

The fuse of the horn is money, and it is solved by changing the fuse.

1.Loose sealing is susceptible to moisture: Although the inside of the horn is sealed, if the seal is not tight, if the car is not tightly sealed and enters the fog or there is water vapor in the air in the internal space, the water vapor can easily cause the contacts to be damp and unable to work normally.

2.Poor contact of electromagnetic coil terminals: some of the internal electromagnetic coil magnet wire terminal joints of some horns are connected by aluminum metal rivet crimping, which is not firmly welded, if the insulating paint treatment on the enameled wire at the end is not clean or the rivet crimping is not reliable, it is easy to produce a virtual connection fault, resulting in poor working of the horn.

This kind of failure is the quality of the horn, which cannot be repaired, and can only be replaced with new parts.

3.Contact ablation: If the horn is pressed for a long time, it is easy to cause the horn contact to be ablated and the impedance will be generated, the current flowing through the electromagnetic coil will be weakened, and the electromagnetic attraction will not be able to attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse or even no sound.

Answer, but when you keep honking the horn, if the instantaneous strong current passes through the impedance, it can still work normally, so it will be good and bad.

Summary. Hello, dear and happy to answer for you, Chang'an Yuexiang V3 horn sometimes rings and sometimes does not sound because of poor sealing, poor contact of solenoid coil terminals and contact ablation. Workaround:

Pull the horn's wire back out and find a place to pick it up. Generally, it is due to the direction control, and the iron over there is not good.

What should I do if the Changan Yuexiang V3 horn sometimes rings and sometimes doesn't?

Hello, dear and happy to answer for you, Chang'an Yuexiang V3 horn sometimes rings and sometimes does not sound because of poor sealing, poor contact of solenoid coil terminals and contact ablation. Solution: Pull out the horn's wire again, and then find a place to pick it up.

Generally, it is due to the direction control, and the iron over there is not good.

Changan Yuexiang V3 is a classic sedan launched by Changan Automobile in 2012, which debuted at the 2011 Guangzhou Auto Show, and was officially named Yuexiang V3 in 2012 because of its positioning slightly lower than Yuexiang

Hello, the horn does not sound, according to the following fault reasons for maintenance, the car horn will ring for a while, the reason may be poor sealing, poor contact of the electromagnetic coil terminals and contact ablation. The following is a detailed description: 1. The seal is not tight and it is easy to get wet

Although the inside of the horn is sealed, if it is not tightly sealed, it enters the fog or there is water vapor in the air during car washing, and the water vapor can easily cause the contacts to be damp and not work properly. 2. Poor contact of electromagnetic coil terminals: some horns have electromagnetic coil enameled wire terminal joints that are connected by aluminum metal rivets, if the insulating paint treatment on the enameled wire at the end is not clean or the rivet crimping is not reliable, it is easy to produce false connection, resulting in poor horn work.

This fault is due to the quality of the horn, which cannot be repaired and can only be replaced. 3. Contact ablation: pressing the horn for a long time is easy to cause the horn contact to be ablated and produce impedance, and the decrease in electromagnetic suction cannot attract the armature to drive the diaphragm to vibrate normally, resulting in hoarse pronunciation or even no sound.

Answer: However, when the horn is constantly pressed, if the instantaneous strong current passes through the impedance, although it can work normally, it will be good and bad.

1. It may be the sound of the rubber sleeve rubbing hook of the handbrake line under the chassis, go to the 4S shop and ask the master to break the iron hook and loosen some of it, and temporarily improve the butter, and the effect is still obvious. It won't be long before the butter will attract more dust and cause sludge, and there will still be abnormal noise after curing, which will also affect the performance. If it is not very troublesome, it is recommended to replace it.

2. There are at least two seats on the car, and when abnormal noise occurs, it is necessary to determine whether one seat is ringing or all the seats are ringing, and different solutions should be formulated according to different faults.

3. Check whether there are foreign objects around the seat that interfere with it to produce abnormal noise, such as boxes and other easily movable items under the seat, which make a noise when the car is running against the seat, if you find such similar items, clean them up.

4. Check whether the seat fixing screws are loose, a seat has at least four screws to fix, one or several screws are loose, people will make a sound when they sit on it, and it is very simple to solve this problem, find a wrench to tighten the loose screws.

5. Many car owners like to wrap the seat with a layer of cushion, some car seats themselves are leather, and after wrapping a layer of cushion, it may interfere with the leather and make a sound, so when installing the cushion, it is necessary to consider whether it matches the original car seat material.

The causes of Changan Yuexiang's rear axle abnormal sound include too large meshing clearance, too small meshing clearance, and noise of half shaft and half shaft casing.

The meshing gap is too large, and the round spike slag:

When changing gears or changing speed sharply, there is an abnormal noise in the rear of the vehicle. Most of the reasons are that the meshing gap between bevel drive gears and driven gears, cylindrical drive gears, planetary gears and half-shaft gears, and half-shaft gear keyways and half-shaft spline teeth is too large. Adjust the clearance or replace the relevant parts.

The engagement gap is too small;

After accelerating or releasing the accelerator pedal, the rear of the body is abnormal, accompanied by heating, which is mostly caused by too small gear meshing gap or poor meshing. However, due to insufficient lubricating oil and poor lubrication, the above similar phenomenon will also occur. Change the oil or adjust the clearance.

and half-shaft casing noise:

When the half-shaft or half-shaft bushing is bent and the two rub against each other, the vehicle will produce abnormal noise when driving. You need to replace the relevant parts or go to the repair shop Uyghur Resistant Repair.

Millions of car purchase subsidies.

1. The engine has abnormal noise.

Symptom description: There is a lot of abnormal noise in the engine compartment, and most people also judge it to be the abnormal noise of the engine compartment by the sound**, which is usually a metal screeching sound or a howling sound.

Solution: The abnormal engine noise indicates that the technical status of a certain mechanism of the engine has changed. It is mainly caused by excessive wear and tear of some parts or improper assembly and adjustment.

Some abnormal noises can still predict that the engine will be damaged accidentally, so when the engine has abnormal noise, it should be repaired in time to prevent the fault from expanding.

It should be reminded that if it is an abnormal noise in the engine, most of the owners will not be able to solve it by themselves, and it is best to send it to the factory for maintenance.

2. There is abnormal noise in the gearbox.

Symptom description: If there is a "rustle" sound inside the gearbox while the car is driving, and there is no more after pressing the clutch or accelerator, there will be a whistle-like sound when changing gears.

Solution: There are many transmission parts, and the reasons for the sound are more complex, so we should pay attention to whether it is related to a specific speed, such as some planetary teeth that sound at about 50km h.

Whether it is related to certain gears, which is very important for judging the failure of the transmission, if a certain gear sounds, it must be related to the components that affect the transmission of the gear; If all gears sound, it is often a common meshing shaft failure or a lack of oil in the transmission. Whether it is related to specific actions, such as increasing and decreasing gears, starting, rapid acceleration, sharp deceleration, turning, etc., are effective means to judge abnormal noise, among them, changing speed and direction are particularly important for judging the rear axle fault.

If the abnormal noise of the transmission is obvious, it is recommended to send it to a professional repair shop to check the faulty parts, and then replace them.

3. There is abnormal sound of wear.

Symptom description: When driving on the accelerator or brake, there is always some abnormal noise in a certain part of the body, the sound is not loud, and it does not affect normal driving, but it always makes people worry a little about the failure of the body.

Solution: The abnormal noise of the door is mainly caused by the lack of lubrication, but it is necessary to judge whether it is the position of the door hinge or the glass regulator, door lock mechanism, handle mechanism, etc. inside the door. In the case of door hinges or limiters, special door hinges and slide grease can be used, while special door attachment grease is used for lubrication of glass regulators, door locking mechanisms, handle mechanisms, etc. inside the door.

The throttle is unstable at idle, so it is recommended to clean the throttle.