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The first thing to do is to make sure that this sound is coming from **? Most likely, it was the sound of the solenoid valve of the canister. In addition, there is also the possibility of a resonant sound. You can put the car up and put it in reverse gear to see exactly where the noise is coming from.
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Hello. When did it start to exist, it would definitely be abnormal if it didn't exist before. Go to the repair shop to check whether there is a fault code in the gearbox system, and listen to the sound from **, whether it is the sound of the solenoid valve working on the sliding valve box in the gearbox.
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Hello, that's the sound made by the shift solenoid valve, don't worry about the normal sound. Quite a few cars are like this.
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In this case, it is recommended to go to the repair shop in time to check and find the abnormal noise for maintenance, so as not to affect the overall safety performance of the vehicle.
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Hello, you see if it is a warning sound from the reversing radar sensing system. If there is a reversing radar sound, this is normal, which is the system self-test sound.
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This may be the sound of the solenoid valve under the gearbox, so don't pay too much attention to it and continue to observe it for a while.
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Hello, according to your situation, you should be caused by a problem with the gearbox of the car, it is recommended to check it.
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1. Check the brake disc and brake pads, the corners of the brake pads need to be slightly polished. 2. Further check whether the spring of the brake cylinder is in place. 3. Use sandpaper to polish the extension of brake pads and brake discs. 4. Use a special caliper to adjust the piston of the brake cylinder.
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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.
The human factors of abnormal noise during automatic gear engagement are:
1. It did not stop when the gear was attached.
When parking, we always stop the car first and then switch the gear lever from D to P. If the car is in P gear without stopping, the P gear hook inside the gearbox will rattle against the gears. Such an operation will cause the lock hook to wear or even break, and in serious cases, it will cause the gearbox to be scrapped.
2. The operation sequence is wrong when parking on the slope.
For automatic transmission models, the P gear relies on the lock hook card main gear to achieve stability. When parking on a slope, you should pull the handbrake first and then put the P gear, so that the handbrake can withstand the sliding force of the vehicle. If the P gear is first hung and then the handbrake is pulled, then the sliding force of the vehicle is completely borne by the P gear lock hook, so that the lock hook and gear are tight, and at this time, there will be a sound from the P gear to other gears.
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When the automatic transmission hangs the reverse gear and reverses, because the vehicle is in the opposite direction at this time, and there is a certain gap between the brake pads and the rear end of the bracket, so when braking, the brake pads will hit the rear end face of the bracket, so as to make a clattering sound. The rattling sound when reversing is a normal noise and is not a sign that the vehicle is malfunctioning.
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Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.
This is caused by the solenoid valve in the gearbox, which is not very smooth when working. If it is a dual-clutch gearbox, this is a common problem of a dual-clutch gearbox, there is no way to change it, if it is this AT, the gearbox needs to change the gearbox oil, if it still doesn't work, then you need to clean the solenoid valve in the gearbox.
Question: The transmission oil has been changed.
What kind of vehicle is it? How many kilometers have you run?
The question will still be like this.
What kind of vehicle is it? How many kilometers have you run? Let's talk about it.
Question: Not so after a few minutes after the hot car.
Honda Spiri.
What kind of vehicle is it? How many kilometers have you run?
This is still a problem with the solenoid valve in the gearbox, if it does not appear in the case of a hot car, then it is not a big problem and can be used normally.
Question: 170,000 kilometers. Honda Spiri.
This phenomenon is mainly due to the problem with the solenoid valve in the gearbox, if the hot car does not appear, then the problem can be used normally.
Question: The cold car will click into gear.
I know that there is still a problem with the solenoid valve in the gearbox, which means that there is a slight stuckness. If it does not appear in the case of a hot car, then it can be used normally.
If I can help you, please give me a thumbs up Thank you!
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There is a new car to hang the reverse gear click, it may be the fault of the reverse gear, the reverse gear needs the vehicle to be completely stationary, the clutch pedal is completely pressed to the end, and the clutch pedal is pressed for 2 seconds before hanging the reverse gear, so that there will be no teething.
There are several reasons why there is a sound in the car gear:
1. The clutch is not stepped on to the end;
2. The linkage mechanism is loose;
3. The clutch plate is seriously worn and the pressure plate is damaged;
4. The gear is not in place.
The solution to the sound of the car gear:
1. The clutch must be stepped on in place
2. Check the linkage mechanism and tighten it
3. Replace the damaged clutch plate;
4. Master the correct method of tagging, and the tag must be in place.
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The abnormal sound of the automatic transmission when changing gears is generally caused by the failure or blockage of the shift solenoid valve. If there is a small gurgling sound when changing gears, it is normal. Because the mechanical automatic shift lever in the past was subject to the shift structure, it was unavoidable to make a gurgling sound caused by mechanical collision when pulling the shift lever.
If the current electronic gear lever or the rattling sound is too loud, then it is necessary to consider the internal problems of the gearbox.
There is also a situation that because the P gear is a parking gear, when the parking ratchet inside the gearbox is engaged from the R gear to the P gear, the parking ratchet will be stuck in the car ratchet to achieve the parking effect, so there will be the "Kata" sound you hear. This phenomenon is relatively common in automatic transmission vehicles, mainly due to the structural characteristics of the automatic transmission.
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Is it normal for the manual transmission to have an abnormal sound inside the manual transmission when it is engaged in reverse gear?
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1. It may be the electronic linkage between the braking system and the automatic transmission.
When shifting gears, the clutch does not step to the end, causing damage to the gears. In addition, the foot should not be placed on the clutch when the clutch is not in use, resulting in excessive wear of the release bearing.
Solution: Go to the 4S shop for inspection and repair.
2. It may be idle gear.
In the first few seconds of starting the engine, the engine speed is very high, and if the gear is hung from neutral to reverse before the engine speed drops to a stable state, it will bring a strong shock vibration to the gearbox and damage the shift switch in the transmission. The scientific approach is to wait for the speed displayed in the instrument cluster to stabilize before using reverse.
Solution: When shifting gears, attention should be paid to the coordination of the clutch pedal, throttle and gear lever. When shifting gears, the gear lever must be pushed into place so that the gears are fully engaged, so as not to damage the gears or the transmission will automatically disengage while the car is moving.
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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 seep into Chang to avoid unnecessary disassembly, first of all, we must 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 damage to 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 human interference.
First of all, I think that cars have automatic transmissions, and buses and trucks will also have them in the future, but there are fewer in China, such as the buses we usually take, most of them are now pure electric, and they are also considered automatic. There are relatively few trucks with automatic transmission, and the operation of trucks is relatively extensive, mostly trucks, and the difficulty of popularization is still relatively large. With the development of science and technology, I believe that automatic transmission will be very common in the future, after all, it is still more convenient to use.
Length, width and height: 4430mm 1900mm 1250mm wheelbase: 2650mm >>>More
Geely Emgrand GL, Chery Arrizo 7, Citroen Elysee, Changan CS95, NIO ES8 New Energy, BMW 3, Lincoln Navigator, Corolla, Harvard H6.
Definitely, probably CVT (continuously variable transmission), which should be seen at the Beijing Auto Show at the end of the month.
Of course, there is a clutch system, but it is the structure inside the gearbox, which is automatically adjusted with the speed of the vehicle and the opening of the throttle position! >>>More