A 40 mile cab with a buzzing sound?

If the bearings, tires, shockproof cotton, exhaust pipes are checked, or can not be solved, then your car may be the same as mine, everything has been changed or not, the trunk of the things are all taken out or there is Weng Weng sound, and finally I turned the spare tire over, the sound disappeared, it may be the resonance of the spare tire wheel hub and the ground metal friction, I have been looking for a lot of car repair masters have not found out the problem, the replacement has been changed, this sound is generally the bearing is broken, there is no sound after the change, I'm different, and the final reason is actually on the spare tire. Hope it helps, hope!

The buzzing friction echo emitted by the vehicle is mostly caused by the bearing, but it is still not solved, so the concealment of the problem is very high, and the A4L front suspension is multi-link.

Suggestion: Check whether the hem ball joint is loose or whether the half shaft is loose, and it is recommended to replace the bearing.

2.It could also be resonance.

Recommendation: Check to adjust and tighten the connecting rubber and bolts between the engine, gearbox and the main frame. If necessary, the soft connection can be reinforced to a near-hard connection to change the resonance velocity.

At the same time, it is also possible to check the suspension of the rear axle section. Eliminating resonance requires patience and experience, but car repair shops are generally reluctant to do this kind of work that is not easy to see, so it is recommended to do it yourself.

The faster the car buzzes above 40 yards, the louder it becomes, which may be the tire noise of the car's tires, and the sealing of the doors.

If the bearings, tires, shockproof cotton, and exhaust pipes are checked, they still can't be solved. It may be the resonance caused by the friction between the spare tire hub and the metal on the ground. You can turn the spare tire over and the sound will disappear.

Identifying Wheel Bearing Failures:

1. Sound: The wheel bearing is worn, and the driver can distinguish it from the sound of the wheel. One manifestation of a bad wheel bearing is the rumbling noise. Noise tends to make the speed at which the vehicle is traveling louder.

2. Vibration: Accompanied by a rumbling sound, the vibration sound of the broken wheel bearing can be felt in the car or on the steering wheel. At higher speeds or when cornering, this noise will be even greater.

Summary. When you get to 20 or 40 yards, the engine makes this sound. Mainly in this speed range, the gears above the gearbox are relatively high.

When the engine speed is relatively low, the torque output during the acceleration process is insufficient. This is mainly caused by poor engine combustion, and it is necessary to clean the throttle and fuel injector, replace the spark plug, and check that there is more carbon in the engine cylinder, which also needs to be cleaned. There is also a need to check the exhaust valve on the engine to see if there is any problem, which needs to be checked.

The car runs to 20-40 miles and the engine is buzzing.

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

The car is not cold, the car is hot, and after 40 miles, the sound is normal.

When you get to 20 or 40 yards, the engine makes this sound. Mainly in this speed range, the gears above the gearbox are relatively high. When the engine speed is relatively low, the torque output during the acceleration process is insufficient.

This is mainly due to the poor combustion of the engine, which leads to caution, and it is necessary to clean the throttle and fuel injector, replace the spark plug, and check that there is more charcoal in the engine cylinder, which also needs to be cleaned. There is also a need to check the exhaust valve on the engine to see if there is any problem under the flush, which needs to be checked.

See?

The problem you are talking about is most likely the tire noise, which is louder if the tire is harder. Take Goodyear tires, for example.

Hello! Shock absorbers at the rear, tires, bearings on the rear wheels can all contribute to this! If you can also hear a buzzing sound on the flat road, there is a greater chance that the bearing will be empty! It is recommended to go to the repair shop or 4S shop for maintenance!

Preliminary estimate of your car's rear wheel bearing is broken

Hello, the rear wheel bearing is broken, drive to the repair shop to check it.

The buzzing sound of the car while driving is most likely caused by these reasons, so be careful!

How to fix it, this is also the case with mine, the more people in the back seat, the louder the buzzing.