The car sometimes makes a buzzing noise, and the sound disappears after a while, what is the reason?

This is usually due to a leak in the engine's air intake duct, or an air cleaner.

If the installation is not in place, the vacuum pipeline will fall off, and this situation will occur during driving, so it is necessary to do an inspection to ensure that the intake pipeline is reliably sealed to achieve normal, and timely maintenance to ensure that the driving is stable, comfortable and safe. Hope mine can help you.

The abnormal sound of the body is usually due to the insufficient stiffness of the body, which causes the door to rub or shake the frame during driving, or the friction between the steel plates is caused by dewelding in some places. Methods such as sticking adhesive strips on doors and windows or padding rubber on friction parts may be able to reduce or eliminate abnormal noises, and if such abnormal noises occur, it is necessary to check as soon as possible to determine the fault point and replace the aging parts to solve it.

The reasons why cars are buzzing are as follows:

Common cause: Leaking exhaust pipe. When there is a leak in the intake and exhaust pipes, the exhaust speed will increase as soon as the vehicle accelerates. At this time, the vehicle will make a loud roar.

The throttle is dirty, and when the car accelerates, the load on the engine begins to increase. At this time, it is necessary to increase the opening of the throttle and increase the amount of oil. If the throttle opening is not opened to the optimal position due to dirty blockage, it will cause the engine to have a poor mixing ratio and make noise when accelerating.

Engine cylinder shortage, engine cylinder shortage mainly refers to the engine one or more cylinders are not working properly, usually manifested as: the vehicle is not powered enough, and the exhaust pipe shakes seriously, so that the engine "suddenly" or plop, plop roar sound can be heard clearly.

The reason is that the problem with the gearbox is that the hum generated during acceleration is not necessarily produced by the engine, but can also be caused by the wear of the transmission bearings, the reduction of lubricating fluid, and the friction. If the problem is really the hum of the engine, see if the revs are very high. If the rpm increases when accelerating and the speed increases slowly, the clutch slips and the clutch pack needs to be replaced.

If there is noise during steering, check the ball joint and booster pump for faults. If there is noise when braking, it may be that the brakes will wade through water, causing the brake pads to rust or have debris left behind. If there is noise when the air regulator is opened, consider checking that the pulley of the air regulator compressor is not slipping.

Check the tire bearings and do this. Drive the vehicle on the lifting platform, hang neutral gear, do not pull the handbrake, attach the ears to the side of the tire, use one hand, turn the 4 tires in turn, as long as you hear a "buzzing" sound, it means that the bearing of the tire is broken, remove it and replace it.

First of all, check the tires for abnormal wear. If there is, it may be because the camber angle of the wheels is wrong, causing the tires to gnaw at the tires, and the tread of the tires will be worn in waves, and when the speed of the car reaches a certain level, it will make a buzzing sound and the body shakes. If the tires are worn in waves, the main cause may be the wrong dynamic balance.

It may also be due to the abnormal noise caused by the wear of the wheel bearing, but it may not be easy to detect during the on-site inspection due to the slight fault phenomenon.

This situation is generally due to the leakage of the intake pipe of the engine, or the air filter is not installed in place, and the vacuum pipeline falls off, which will occur during driving, and it is necessary to do an inspection to ensure that the intake pipe is reliably sealed, to return to normal, and to overhaul and maintain in time to ensure that the driving is stable, comfortable and safe.

Bearing ablation causes a buzzing sound: 1. You run the car to 80km, and then slide in neutral gear, listen carefully, if the sound becomes clearer, it can be judged that there is a problem with one of the four wheels.

2. If the neutral gear slides and the sound disappears, it is generally a bearing failure of the engine, and the ablation of the bearings in the engine is generally a water pump, generator, and tensioner.

3. If the above situation is not a problem, the car has to be sent to the 4S shop for maintenance to find out the reason, because it is likely to be the sound of the transmission, which is more troublesome and more expensive to maintain.

The reasons for the buzzing of the car are: 1. The tire pressure is too high, which causes serious wear on the crown of the tire, the shock absorption and cushioning performance of the tire decreases, and the tire noise increases significantly; 2. The contact friction between the crown part of the tire and the ground is uneven, and there is a phenomenon of unevenness; 3. The wheel bearing is worn loosely.

1. Check whether the chassis screws are loose, check whether the rubber sleeve of the chassis lower swing arm is loose, if so, it is recommended to go to the maintenance station for maintenance;

2. Check the engine oil, if it is missing, add it to the appropriate position;

3. Check the valve clearance and adjust it to a suitable position.

First of all, determine the location of the abnormal noise! If the car can be lifted with a lift, one person is in gear in the car, and the other person is under the car to judge the abnormal noise.

If the squeak occurs near the tyre and the wheels and bearings have been eliminated, then there is a possibility that the brake pads and brake discs are rubbing against each other. Generally, the abnormal noise of the brake pad is mostly due to the friction with the brake disc caused by the hard points of the brake pad, and the noise can be ignored if the sound is small; If the noise is loud, you can remove the brake pads and polish them with sandpaper before reinstalling them, and most of them can be solved. If the sound is at the junction between the gearbox and the engine, it may be an abnormal sound caused by damage to the clutch plates and release bearings.

If it is inside the gearbox, then Li Qimo's abnormal noise may be abnormal wear of the first and second gears. It should be reminded that repairing a quiet key car is the same as seeing a doctor, and it is also very important to find an experienced maintenance worker, so that you can definitely avoid detours and shorten the maintenance time as much as possible.