13 years 1 6 manual automatic transmission hanging reverse gear has impact sound, what s going on?

In many cases, it is not the internal valve body that is damaged, but the stubborn dirt and impurities in the inner dao part, especially in the internal valve body, the dirty impurities accumulate to form a blockage, resulting in the inability to achieve effective adjustment of oil pressure, resulting in the occurrence of frustration impact slippage. At the same time, the problem of high temperature of the gearbox cannot be ignored. According to the Automatic Transmission Repair Association, it is called

More than 90% of all faulty automatic transmissions are caused by overheating. ”

High temperatures can damage the quality and friction characteristics of the transmission oil, increase friction and wear, and transmission noise will follow, and at the same time, sludge (impurities or dirt) will also be generated inside the transmission (such as the valve body), resulting in stagnation and shock of the transmission. If the temperature exceeds 120 °C, the rubber sealing material will begin to harden, eventually leading to leakage and reduced hydraulic pressure. If the temperature is higher, the gearbox starts to slip, which in turn causes the temperature to rise even higher.

Audi and other high-end models will call the police and enter the transmission protection mode) If it is not solved in time, the transmission will be scrapped.

Therefore, only by removing the stubborn dirt and impurities in the gearbox and effectively controlling the working temperature of the gearbox can the gearbox problem be completely solved and prevent its recurrence. This is also the key to solving transmission failures without dismantling and repairing, and the specific content can be seen in detail!

According to what you said, it is possible that the gears of the transmission are broken.

This is because the reverse gear of the manual transmission BAI does not have a synchronizer, so there will be a sound of wheel engagement after the reverse gear is engaged, which is a normal phenomenon and you don't need to worry. Always make sure the car is fully seated before engaging in reverse gear. If the car doesn't come to a stop before engaging in reverse, there will be a knockout.

If there is a tooth punching phenomenon, it may cause damage to the wheel.

Automatic transmission cars must also make sure that the car is completely stopped before engaging in reverse gear, otherwise it will aggravate the wear and tear of the gears.

Manual transmission cars all have synchronizers, and the driver is actually using the synchronizer to select gears when he is in gear.

The shift lever of the manual transmission is connected to the fork, which is connected to the synchronizer.

Synchronizers make shifting easier because they synchronize the speed of the gears.

But the reverse gear is a spur gear, and there is no synchronizer, and the reverse gear will engage with the other two gears when the reverse gear is engaged, and only then can the car reverse.

Whether it is a manual or automatic transmission, there is transmission oil inside.

The function of transmission oil is lubrication, heat dissipation, and force transmission. Transmission oil needs to be changed regularly, and if it is not changed for a long time, it may exacerbate the wear of the gears.

When changing the transmission oil, it is important that the transmission oil pan is cleaned and the transmission oil filter needs to be replaced.

The abnormal sound of hanging reverse gear is caused by the lack of synchronizer in reverse gear. The synchronizer is a device inside the transmission, which plays a smooth role in biting and gearing when changing gears while driving.

On the issue of abnormal noise, it is difficult for ordinary car owners to distinguish which ones are fault 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 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.

The identification of car noise is limited, and it is difficult to use special instruments to measure the sound of the car, 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.

This is because there is no synchronizer in reverse gear, which is an internal device of the gearbox that acts as a smooth bite and shift while driving.

The most direct manifestation of reverse gear damage is the abnormal sound when the reverse gear is hung. At this time, you should go to the repair station in time for inspection and repair to avoid further damage. If the reverse gear is damaged and not repaired in time, debris may cause damage to other gears or bearings, resulting in abnormal noise in all gears, and in severe cases, the entire gearbox will be ablated and unable to drive.

For drivers who are skilled in liquid driving, it is faster to change gears and change gears when the vehicle is not fully stabilized or the clutch is not fully pressed to the bottom, which will have a greater chance of damaging reverse gear. In addition, drivers who are accustomed to driving automatic transmission vehicles suddenly drive a noisy manual transmission vehicle and sometimes forget to press the clutch. At this time, it is easy to damage the reverse gear by hanging the reverse gear.

Some vehicles are equipped with foot pads or grounding rubber, which can affect the travel of the clutch pedal, making it impossible to completely cut off the power transmission when the clutch pedal is pressed.

It is recommended that the condition for engaging reverse gear is that the vehicle must be completely stopped, and the clutch must be completely pressed to the bottom before it can be slowly engaged in reverse gear. It is recommended to develop a good habit of stepping on the brakes when reversing, so that the vehicle stops completely, and the clutch must be pressed to the end, which can effectively avoid damage to the reverse gear.

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The essence of such a sound is that the reverse gear has a hard impact, and the car does not stop and hangs the reverse gear, which will cause high-intensity wear and tear to the gear, and it will become easier and easier to hit the teeth, drop the gear, a vicious circle, and finally overhaul.

The reason why the car has a loud sound when it hangs in reverse gear:

1. There is no synchronizer in reverse gear, the synchronizer is a device inside the gearbox, which plays the role of smoothly meshing the gear when changing gears while driving.

2. When the gear is in gear, there is friction between the gears, and when the gearbox reverse gear is still running in a short period of time after stepping on the clutch, the tooth punching phenomenon will occur when the gear is selected. The solution is to press the clutch and wait for a few seconds, and then select the gear when the reverse gear is completely stopped, so that there will be no abnormal noise. When hanging in reverse gear, you need to pay attention to step on the brakes and stop the car before hanging.

When stepping on the clutch in the gear, you must step on the clutch to the end, and you must not hang the reverse gear on the clutch when it is still semi-linked, which will also cause the phenomenon of beating teeth, and when you hang the reverse gear, don't work too hard.

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Summary. It may be that there is stubborn dirt and impurities inside, especially in the valve body, dirt and impurities accumulate to form blockage, resulting in the inability to effectively adjust the oil pressure, resulting in the occurrence of abnormal noise.

It may be that there is stubborn dirt and impurities inside, especially in the internal dirt and impurities of the valve body, which is blocked by the accumulation of blue sections, resulting in the inability to imitate the bridge to achieve effective adjustment of oil pressure, resulting in the occurrence of abnormal noise.

What is the reason why Buick Kaiyue is in gear and hears a bang.

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