How can there be a clatter sound when the new car idles and hangs neutral

Hello, the sound of a clatter may be a valve ringing a canister solenoid valve ringing.

Summary. In the case of this idle speed, there is this sound disappearing after running, this is a normal phenomenon, the engine speed is relatively low, the engine's valves, including the engine's formal control and adjustment system, will emit this sound, after running up the speed is relatively high, this sound will disappear. This is normal, there is no problem, every engine will have this phenomenon, but some engines are more obvious, some engines are not obvious, this normal use is fine, there is nothing to do.

There is a clicking sound when the car is idling, but does it run?

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

In the case of this idle speed, there is this sound after running, this sound disappears, this is a normal phenomenon, the engine speed is relatively low, the engine's valves, including the engine's formal control and adjustment system, will emit this sound to let the jujube mill, after running up the speed is relatively high, this sound will disappear. This is normal, there is no problem, every engine will have this kind of fighting elephant, but some engines are more obvious, some engines are not obvious, this normal use is fine, there is nothing to do.

When you stop at the traffic light and wait for the traffic light, you will return to this shirt with a clattering sound, and when you get fat with the gas pedal, you will pick up the lead and disappear! There has been no such situation before, and there has only been a leak recently!

This friend is normal and there is nothing wrong with it. There is also a guess before the guess, and it is impossible not to have it. It's just that you may not have noticed this sound before, it is impossible not to have this sound, every engine will have a good open, it is impossible not to have it.

Ok thanks.

You are welcome.

The transmission housing is damaged, and the transmission housing and bearing housing bore 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. Due to the fragmentation of individual gear faces, the impact during the meshing process is caused.

When this gear is engaged, there is a strong shock and vibration that resonates with the transmission housing.

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 due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, it is important to learn to distinguish the abnormal noise of the car and avoid the time and energy of the waves.

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 sounds, such as the sound of high-voltage electric leakage, the slight loose sound of the bearing of the rolling of the laughing lead, etc., the general volume is small, the degree of wear and tear 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.

If it's an automatic transmission.

The car phenomenon: during the operation of the car, the automatic transmission.

There is always an abnormal sound inside; The automatic transmission has an abnormal sound when the car is moving, and the abnormal sound disappears quickly after parking and gearingCauses: The oil pump is too worn or the oil level of the automatic transmission is too low or too high, which causes abnormal noise; Torque converter.

Abnormal noise due to damage to the locking clutch and one-way overtaking clutch of the guide wheel; Planetary gears.

Abnormal sound of the mechanism; Shift actuators make abnormal noisesDiagnostic: Check the oil level height of the automatic transmission.

If it is too high or too low, it should be adjusted to the correct heightThe car should be lifted by the lifter, the engine should be started, and the parts and times of abnormal noise of the automatic transmission should be checked in neutral, forward, and reverse gearsIf there is always a continuous abnormal sound in the front of the automatic transmission in any gear, usually the abnormal noise of the oil pump or torque converter, the automatic transmission should be disassembled and inspected to check whether the oil pump is worn and whether there is a large amount of friction powder in the torque converter.

If there is any abnormality, the first type of oil change pump or torque converter should be replacedIf the automatic transmission only has abnormal noise when driving, and there is no abnormal sound in neutral, it is an abnormal sound of the planetary gear mechanism. In this regard, the automatic transmission should be disassembled, and the various parts of the planetary gear mechanism should be checked for wear marks, gears for breakage, one-way overtaking clutch for wear, stagnation, bearings or thrust lead celery gaskets.

Once there is a failure, the owner will send it for repair in time, such as abnormal noise, the owner does not care about continuing to use the vehicle, and finally may lead to the vehicle not leaving, or even the entire gearbox scrapped. Therefore, once the gearbox fails, it must be sent to a professional gearbox repair site for repair in time, so as to avoid small losses.

Summary. Hello, happy to answer your questions.

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, happy to answer your questions.

There is no sound in the neutral gear, and there is a sound in the gear, so this should be the problem sound caused by the overload of the engine itself, and it is necessary to check it to see if there is a problem with the belt tensioner or a problem with the engine gearbox.