What is the reason for the sound when the gear is not activated?

You don't know very clearly, for example, the license plate model, there is no abnormal sound in the engine when starting, is it you stepping on the clutch to ignite, did you step on the clutch before the sound appears, is it a sound when you step on the clutch when you start in gear, and are you sure that the clutch sounds? (Generally, if you don't make a sound when you step on the clutch, you can't conclude that it is the clutch ringing).

If the vehicle can still shift gears normally, exercise, there is no big problem, it is recommended to go to the nearest repair shop to see, whether the screws are loose and other reasons.

If the clutch line is broken, or the release bearing is broken, you will know for yourself, the car is not in gear or the shift is not smooth.

The general gearbox is fine.

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 really had problems. 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 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. There is a sound in the automatic gear, and the reasons are as follows:

1) The lack of lubricant in the separator bearing causes dry grinding or bearing damage.

2) There is no clearance between the release bearing and the inner end of the release lever.

3) The oil stain and dust between the separation bearing sleeve and the conduit are serious or the separation bearing return spring and pedal return spring are fatigued, broken and falling off, so that the separation bearing return is not good.

4) The spline hole of the driven disc is loose with its spline shaft (5) The vibration damping spring of the driven disc is annealed, fatigued or broken.

6) The rivet of the friction plate of the driven disc is loose or the rivet head is exposed.

7) The pin holes of the double-plate clutch transmission pin and the intermediate pressure plate and the pressure plate are worn loosely.

2. The so-called automatic transmission, as the name suggests, does not need the driver to manually change gears, and the vehicle will automatically choose the appropriate gear according to the speed and traffic conditions.

3. The power of the engine is transmitted through the gearbox, and the gearbox is also a key indicator that affects fuel consumption, generally speaking, the fuel consumption of automatic transmission is more than 10% higher than that of manual transmission. Whether it's a manual or automatic transmission, the more gears you have, the more fuel-efficient.

4. The automatic transmission uses the planetary gear mechanism to change the speed, which can automatically change the speed according to the degree of the accelerator pedal and the change of vehicle speed. The driver only needs to control the speed of the vehicle by manipulating the accelerator pedal. Generally speaking, there are the following types of automatic transmissions commonly used in automobiles:

Hydraulic automatic transmission, hydraulic transmission automatic transmission, electric transmission automatic transmission, stepless mechanical automatic transmission and continuously variable mechanical automatic transmission, etc. The most common is a hydraulic automatic transmission. The hydraulic automatic transmission is mainly composed of a hydraulically controlled gear transmission system, which mainly includes two parts: automatic clutch and automatic transmission.

It automatically shifts gears according to the opening of the throttle and changes in vehicle speed.

5. The continuously variable transmission is composed of two sets of transmission wheels and a transmission belt, which is a kind of automatic transmission, but it can overcome the shortcomings of ordinary automatic transmission, such as "sudden shift", slow throttle response and high fuel consumption. Compared with the traditional automatic transmission, the structure is simple, the volume is smaller, it can change the transmission ratio freely, so as to achieve the whole process of continuously variable transmission, so that the speed change of the car is stable, and there is no "pause" feeling when the traditional transmission shifts.

Hello, it is recommended that you go to the repair station to check the screws, bearings, tires, etc. on the ground

When we buy a vehicle, we mainly look at the three major parts of the car, the gearbox is one of the three major parts, plays a key role in energy transmission and transmission, is the big housekeeper of the power distribution of the engine, if the gearbox is "sick", it will show some symptoms, today let's talk about the causes and solutions of the clicking sound of the gear.

There is a clicking sound in the gear, which is similar to the abnormal sound caused by gear friction, which is obviously related to the operation of the three-gear control mechanism, and the key component of the shift operation is the "synchronizer".

You can try the following methods for gear clicking:

1. Check whether the gearbox oil is sufficient, too much oil can be added according to the situation, and the deteriorated oil should be replaced in time.

2. For the clicking sound caused by incomplete clutch separation, please step on the clutch low every time you engage the gear, if the phenomenon is not significantly improved, please check the clutch clearance, free stroke and other parameters.

3. The gears and synchronizers in the gearbox are seriously worn, resulting in too large clearance, and the gears and synchronizers are damaged by replacement.

4. If the gap between the bearing and the spline on the shaft is too large, replace the new bearing and thrust washer.

5. The shift fork shaft is seriously worn, and the shift fork shaft or fork should be replaced.

6. The shaft is bent and deformed, and the bearing is loose and causes abnormal noise, and the shaft and bearing are replaced.

Among them, the synchronous ring in the synchronizer is easy to be ablated, and the gear to be meshed will have an impact between the teeth, which will form a "click" noise and make it difficult for the gear to mesh! After disassembly, it was found that the synchronizer ring had been ablated to blue, and only the copper synchronizer ring needed to be updated to solve this abnormal noise.

It could be because of a problem with the gear system. Normally, there is a sound when the gear is put up, but this time the gear is found to have not changed, but the car can obviously be driven normally.

There is a problem with the generator gears. The phenomenon is that there will be a clicking sound when you step on the brakes and hang into D or R gear, but there will be no sound when you hang in N gear. There is no abnormal sound when running, just change the generator.

If the model of the automatic transmission has an abnormal sound when the gear is in gear, and the car is not leaving, this should be checked first to see whether the gearbox has the bottom of the oil pot or the transmission oil deterioration needs to be replaced in time and other factors.

There are several situations in the future, the first is that the clutch is not stepped on to the end, the second point is that the clutch plate is seriously worn, the pressure plate is damaged, and the third point is that the gear is not in place, and the automatic transmission car has the sound of Kara when the gear is in gear.

If it is the sound when the manual transmission engages reverse gear, it is normal. When the manual transmission engages reverse, the reverse gear is pushed to engage with the other two gears. If there is abnormal noise when the automatic transmission is in gear, you need to go to the 4S shop to check.

Friend, your situation is relatively serious, if the road conditions are flat, it may be that the power transmission chain is broken.

What is the reason why the automatic transmission car hangs into reverse gear and makes an abnormal noise, and it does not move in place?

Summary. In this case, check the gearbox first, it may be that the bearing or gear wear gap in the gearbox is relatively large, or the gearbox oil is dirty, and then the gearbox will make this sound during the driving process, if the gearbox is not problematic, you need to check the engine, it is possible that the engine needs torque and power output during the driving process. This phenomenon can also occur due to insufficient engine torque and power, and it is necessary to check these aspects specifically.

What is the reason why there is a buzzing sound when the car starts and goes in gear, and there is no sound in neutral?

Hello, I'm helping you sort out the answer to your question, please wait a while If this happens, check the gearbox first, it may be that the bearings or gears in the gearbox wear clearance are relatively large, or the gearbox oil is dirty, and then this sound will be made in the gearbox during the driving process, if the gearbox is not problematic, you need to check the engine, it is possible that the engine needs torque and power output during the driving process. This phenomenon can also occur due to insufficient engine torque and power, and it is necessary to check these aspects specifically.

Hello, the vehicle transmission failure, the relevant reasons and treatment methods are as follows: the first vehicle transmission oil is too dirty or the transmission oil loss caused by this phenomenon, it is recommended to check the transmission oil first, if there is a problem, you need to replace the new transmission oil. This phenomenon caused by the failure of the valve body inside the second gearbox, this is the need to use a computer to read the fault of the gearbox system, according to the fault ** further diagnosis and analysis, the valve body failure, if there is a problem, need to replace the new valve body. Third, the problem of gearbox shift logic caused by this phenomenon belongs to the gearbox program garbled, in this case, it is necessary to use a special computer to redo the gearbox program upgrade, or match the reset!

The reasons for the sound of the car gear: first, it did not step on the end, second, the linkage mechanism was loose, and third, the clutch plate was seriously worn and the pressure plate was damaged. The car gear rings because the gears collide when the gear is in gear.

Reverse gears without synchronizers are prone to this problem. Generally, there is no need to repair it.

The car has a strange sound in the gear, and the reason for the answer:

1. The housing of the transmission Wuhui device is damaged, and the transmission housing and bearing seat hole are worn and deformed for a long time. The sound of this training is the largest when it is engaged in the low speed gear, and the sound decreases gradually as it is engaged in the high speed gear, and the direct gear is the smallest.

2. Due to the fragmentation of individual gear surfaces, the impact during the meshing process is caused. When this gear is engaged, it produces powerful shocks and vibrations that resonate with the transmission housing.

3. The transmission is not properly assembled, the gears or needle roller bearings and bushings of a certain gear of the transmission are not properly replaced, and the assembly clearance is abnormal, resulting in abnormal noise due to poor gear meshing during transmission.

When the car is in gear, it is necessary to judge where the abnormal noise is coming from from the sound when the car is in gear. If the sound is low when the gear is in gear, it is the sound of the gear mechanism coming from near the gear lever. If the gear is clicking, it is caused by a transmission gear shock failure.

Photo by Lu Liting) @2019