What to do if the car chassis creaks

If the chassis of the car creaks, you can first check the rubber sleeve for replacing the brake pads or balance bar. If the problem persists, you can disassemble and check the meshing clearance between the differential gear and the reducer gear, the preload of the reducer bevel drive gear bearing, and the contact traces of the reducer gear to eliminate abnormal noise.

There are many reasons for this problem, such as tightening, such as it is normal for your car's lower swing arm and brakes to make noise when passing through uneven roads, and it is also normal for brakes to lock up, and it will also make abnormal noises. Pay attention to the rear axle and bodywork, check the rear strut, the bumper block is not falling off, the exhaust pipe can also make abnormal noise, then interference noise, which is usually required by the design, the engine has several mounts.

Inspection method for aging and loosening of the opening glue of the balance bar: lift the car, grasp the balance bar with your hands, and shake it vigorously. Under normal circumstances, it cannot be shaken.

If there is a loosening of the stick, the opening glue of the balance bar needs to be replaced. (The balance bar is also called the anti-roll bar), and the ball head of the balance bar suspension is aging. The tires need to be removed to observe whether the rubber at the ball joint of the boom is aging and cracking.

If it is aging, it needs to be replaced directly.

1. Interference between parts.

Possible cause: The two parts affect each other due to impact or the installation of other equipment.

2. Loose bolts or nuts.

Possible reasons: a. Driving on the road with poor road conditions for a long time, the bolts are naturally loosened;

b. Improper disassembly and installation of bolts damage;

c. The tightening torque is not enough or the bolt specification is wrong.

Solution: Tighten or replace the bolts and nuts.

The reasons for the crunching sound of the automobile chassis are as follows: 1. The rubber sleeve of the chassis balance bar is corroded or aged; 2. Automobile brake pads are worn and damaged; 3. The connection between the automobile suspension and the shock absorber fails; 4. Abnormal sound of wheel bearings; 5. Deformation of automobile shock absorbing spring; 6. Aging or wear of automobile shock absorbing bearings, etc. The detailed analysis and solutions to the causes of chassis wear are as follows:

First, due to the phenomenon caused by the aging of the rocker ball or rubber jacket of the car, it is necessary to pick up the car at the repair shop, including the lower rocker ball and rubber sleeve. If there is a significant gap, a new rocker ball or insufficient oscillating assembly must be replaced! Second, due to the phenomenon caused by the problem of the rubber sleeve or tie rod of the car balance bar, the rubber sleeve and tie rod need to be checked.

Thirdly, due to the phenomenon caused by oil leakage of the automobile shock absorber or the problem of the rubber on the top of the shock absorber, it is necessary to focus on checking the shock absorber and the top rubber. If there is a problem, a new shock absorber or top rubber needs to be replaced accordingly. As mentioned above, most of the causes of abnormal noise from the chassis of the car are the above-mentioned reasons, so it is possible to go to the repair shop to decide the direction and rule it out.

The chassis of the car creaks, and there are several possibilities:

1.There is a problem with the rubber sleeve of the balance bar. Phenomenon: When a car passes over an uneven surface, the chassis makes a noise.

Equalizer bars are also known as anti-tilt bars and stabilizer bars. There are two buckles on the balance bar, and the rubber sleeve of the balance bar is inside the buckle. Cold in winter and hot in summer, coupled with soil and dust erosion, will become harder and harder as it ages.

When a car passes over uneven roads, the height of the upper and lower wheels is inconsistent, resulting in a creaking noise.

Solution: Replace it. This part is not expensive, but it is very troublesome to replace, and most people are basically reluctant to replace it.

This thing has nothing to do with security. If it doesn't work, put up with it. Another way is to buy WD40 (High Efficiency Silicone Lubricant), but not sure how effective it will be.

It is said that it can only be managed for a month.

2.There is a problem with the brake pads. Phenomenon: There is a noise under the front wheels, especially when playing the steering wheel. Judgment: When it rings, step on the brakes and see if it still rings. If it doesn't ring, you can basically determine that there is a problem with the brake pads (there is also a possibility that there is a problem with the outer cage).

Solution: Replace the brake pads.

3.There is a problem with the connection between the suspension and the shock absorber. If the chassis creaks when the car is moving, this is probably the reason.

Judgment method: After the car is turned off, press the top of the suspension part of the body to make the body shake up and down. At the same time, listen carefully to the noise, you can judge that there is a problem.

Since you can't see the actual car, you can't make an accurate judgment. For example, the noise of wheel bearings, the deformation of damping springs, the aging or abnormal wear of damping pressure bearings, etc. Basically affects the noise of the chassis of the car.

It is recommended to go to a 4S shop or a professional auto repair shop to let the technician conduct a test to determine the problem so that it can be repaired symptomatically.

Finally, () Bian Xiao is honored to answer for you, about the reason for the crunch of the car chassis? I have some opinions on this issue, and I hope you can find it helpful after reading it! If necessary, Bian Xiao is here waiting for your visit.

The reason for the squeaking sound of the automobile chassis: it may be that the claw pad of the engine is installed in a dislocation, which causes some components to resonate or shake when working, and the friction between two adjacent parts, of course, it is not excluded that it is caused by the abnormal sound caused by the damage of some parts.

Various possible causes of abnormal noise in the chassis of a car.

1. Abnormal sound of disc brakes.

Features: When the vehicle is driving at a low speed on a flat road, it makes an intermittent and irregular "rattling" sound on the axle.

Reason: This is due to the damage, deformation and falling off of the brake shoe support plate, vibration damping spring plate or guide plate of the disc brake, which increases the gap between the brake shoe and the brake caliper support frame, and makes a sound when it hits each other. You can go to the repair station to repair the deformed parts and replace the parts that have fallen off.

Second, the front suspension ball head abnormal sound.

Features: When the vehicle is driving on the undulating road surface in a low-speed gear, the front axle part emits an uninterrupted "click" sound, the worse the road quality, the louder the sound, and the sound intensifies with the increase of speed.

Reason: The gap between the ball head and the ball head seat becomes larger, and the looseness is severe. Because the ball head seat is a sealed structure and cannot be removed, it can only be replaced at the repair station in this case.

Three. Abnormal noise of the front wheel shock absorber.

Features: On flat roads, you can hear the "cooing" of the front of the vehicle, which is intensified when turning sharp corners.

Cause: Vehicles are often driven on bad roads and are not properly maintained, resulting in oil leakage and damage to shock absorbers. Depending on the severity of the damage, it will need to be repaired or replaced.

Fourth, the transmission shaft universal joint abnormal sound.

Features: If the front drive constant velocity joint is faulty, in the vehicle in motion, especially when cornering or accelerating sharply.

Reason: The abnormal sound of the constant velocity gimbal is due to the excessive clearance of the gimbal or the issuance of cards. The main reason for the abnormal sound of the universal cross shaft is that there is no lubrication device or the maintenance is not timely. In this case, you should go to the workshop to apply grease or repair.

Photo by Li Caiying of Pacific Automobile Network).

If the chassis creaks while the car is moving, it is the link between the MacPherson suspension and the shock absorbers that comes back from it. You can stop the car in a relatively quiet place, turn off the engine, press the 4 shock absorbers with both hands, and press the body part up and down to make the body shake up and down, and listen carefully in the process of shaking, you can hear which part of the sound is coming from. If the sound is not made by the friction between the tires and the ground, it can only be caused by the damage of the outer cage.

Replace the outer cage to eliminate squeaky noises. If it is the sound of the tires rubbing against the ground, it is recommended to do a wheel alignment. If the rear wheel squeaks may be caused by the connection between the rear axle and the shock absorber, check the screws at the connection between the rear axle and the shock absorber.

1. Constant velocity universal joint abnormal sound: Constant velocity universal joint is commonly known as ball cage, and its main function is to transmit power and complete steering. If the constant velocity universal joint is seriously worn, and the vehicle turns while driving, there is an abnormal sound similar to "rattle and rattle", you only need to confirm which side the abnormal noise is, and then replace the constant velocity universal joint to solve it.

2. Abnormal sound of wheel bearing: The function of wheel bearing is to connect the vehicle and the tire. No matter how big the tire is, the connection between the vehicle and the tire is by a small wheel bearing, if the wheel bearing is damaged, it will cause the tire to deviate, or even the tire to fall off.

When the vehicle is driving, it emits a continuous abnormal sound similar to "buzzing", which is the alarm of the wheel bearing, and the faster the speed, the stronger the sound, if it is slightly damaged, there will be an abnormal sound when the direction is generally tapped.

3. Abnormal sound of exhaust pipe: abnormal sound of exhaust pipe is generally caused by rupture or leakage of exhaust pipe, and there will be "poof" noise after the vehicle starts. It may also be caused by the damage or blockage of the three-way catalytic converter, which is used to reduce the noise while purifying the exhaust gas.

The above is the introduction of the abnormal sound of the car chassis, I hope it will help you.