What is the reason for the abnormal sound of the chassis when the vehicle is moving

The possible reasons for the abnormal noise are: 1. The connecting screw part of the site part is loose, and then it needs to be tightened 2

Solution: If the abnormal noise of the transmission is obvious, it is recommended to send it professionally.

3. There is abnormal sound of wear.

Symptom description: When driving on the accelerator or brake, there is always some abnormal noise in a certain part of the body, the sound is not loud, and it does not affect normal driving, but it always makes people worry a little about the failure of the body.

Solution: The abnormal noise of the door is mainly caused by the lack of lubrication, but it is necessary to judge whether it is the position of the door hinge or the glass regulator, door lock mechanism, handle mechanism, etc. inside the door. In the case of door hinges or limiters, special door hinges and slide grease can be used, while special door attachment grease is used for lubrication of glass regulators, door locking mechanisms, handle mechanisms, etc. inside the door.

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The chassis makes an abnormal noise when the car is moving, which is the MacPherson suspension and shock absorbers.

The link between the parts is posted. If it is not the sound of the tire rubbing against the ground, it can only be the sound caused by the damage of the outer cage.

1.The chassis makes an abnormal noise when the car is moving, which is the MacPherson suspension and shock absorbers.

The link between the parts is posted. You can park the car in a relatively quiet place and turn off the engine, press the 4 shock absorbers with both hands, and press the body 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.

2.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. (Photo by Du Shifan).

It was the link between the MacPherson suspension and the shock absorber that came out in part. You can park the car in a relatively quiet place and turn off the engine, press the 4 shock absorbers with both hands, and press the body 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 it is not the sound of the tire rubbing against the ground, it can only be the sound 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.

Detailed rules for the maintenance of automobile chassis.

1. In winter, if the chassis is to be maintained, the chassis should be thoroughly cleaned and anti-rust. First of all, the chassis should be thoroughly cleaned, if there is too much mud on the chassis, it should be washed with a detergent to remove grease, so that the chassis can reveal its original "true color", so that the anti-rust care can begin. In a professional beauty shop, the car can be lifted onto the lifting frame for chassis cleaning, wiping, and rust prevention.

2. After cleaning, you must wait until the moisture on the chassis is dry before you can carry out anti-rust care. When applying care, it is important to maintain an even spray coating to create a uniform anti-rust coating that will last for a long time. After all the work is completed, it will be dried for 5-10 minutes to prevent rust from rust on the chassis.

Ask what is the reason for the creaking sound of the chassis when the car is moving.

The first situation is that the ball head or rubber sleeve of the lower swing arm of the chassis is aging or the gap is too large, and it is necessary to focus on checking the ball head and rubber sleeve of the lower swing arm, and if there is a problem, it needs to be replaced in time.

The second situation is to check whether there is a problem with the rubber sleeve of the balance rod and the balance tie rod, if the rubber sleeve is aging or the gap between the ball head of the tie rod is too large, there will also be a creaking sound.

The third situation is the aging of the top rubber on the shock absorber or the problem of the bearing, generally like this kind of failure to the repair shop to find a professional maintenance master to test the car, judge it can basically determine the fault point.

Hello question, thanks!

The abnormal sound of the chassis of the car may be the abnormal sound of the suspension of the car. The suspension system of the car generally includes the upper and lower swing arms, balance bars, ball head shock absorption, etc., and the abnormal sound caused by the suspension system is generally a dull or crisp impact sound. For example, after the balance rod is damaged or the bushing is worn, there will be a continuous abnormal sound of "Gregrad" when passing through bumpy roads, and there will be a dull sound of "knock knock" when the shock absorption is damaged through pits or bumpy road sections.

If the vehicle has this kind of abnormal noise, it is best to repair it as soon as possible, as damage to the suspension system will lead to deviation from the direction and tires.

It is also possible that constant velocity joints are commonly known as cages, which are divided into inner cages and outer cages. If the vehicle turns in the middle of the driving and there is an abnormal sound similar to "rattle rattle", it is usually caused by serious wear and tear of the constant velocity universal joint, and you only need to confirm which side the abnormal noise is, and then replace the constant velocity universal joint can be solved.

Abnormal noise of automobile bearings. No matter how big the tires of the car, the connection between the body and the tires is by a small wheel core bearing, the core bearing is damaged, the vehicle will make a continuous abnormal sound similar to "buzzing", the faster the speed, the stronger the sound, if the bearing is slightly damaged, there will generally be abnormal sound when the direction is lightly hit. Severe bearing damage will cause the tire to deviate, and serious tire eating will cause the tire to fall off.

The above is the more common abnormal noise of the automobile chassis, if the vehicle has the above abnormal noise, it must be repaired and replaced as soon as possible. After all, there are many reasons for the abnormal noise of a car, so you have to go to the repair shop for detailed maintenance.

What is the abnormal noise of the car chassis.

There are many factors that contribute to the abnormal noise of the vehicle chassis.

Suspension, arm, etc. are possible, and it is recommended to go to the repair station for a detailed inspection.

What is the abnormal noise of the car chassis.

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.

Abnormal noises in the chassis of a vehicle are mainly caused by loosening, wear and failure of components of the steering system, suspension system or braking system.

Judging the abnormal noise can be divided into the following steps:

1 The abnormal noise emitted by the vehicle when it starts is generally a fault of the suspension system. It can be caused by loose or damaged engine mounts.

2 The abnormal noise emitted by the vehicle when steering may be a malfunction of the steering system and suspension system. As the vehicle is steering, the suspension system is also involved in the movement due to the tilt of the vehicle that deforms the suspension system.

3 The abnormal noise emitted by the vehicle when driving in good road conditions may be a malfunction of the braking system components. It can be caused by loose brake system components, worn out, brake drum loss or uneven brake disc plane.

4 It may also be that there is a problem with the bearing between the dynamic and static connections of the vehicle. If it is a bearing problem, the driver can tell with a little brake. If the brake sound does not change when the vehicle moves at a constant speed, it is a problem with the bearing.

5. Most of the abnormal noises that occur when the vehicle is driving in bad road conditions are the problems of the suspension system. It can also be caused by a loose braking system.

6 Most of the abnormal noises emitted by the vehicle when accelerating, accelerating or stopping are caused by the suspension system and braking system. The suspension system is mostly a grinding sound. To reduce these abnormal noises, drivers need to be careful not to drive roughly, try to avoid bumps, and slow down to avoid wading when encountering bad road conditions.

In this way, the abnormal noise of the vehicle chassis can be effectively reduced.

Hello! Glad for your question.

Loose chassis generally occurs in older cars, when the car is driving in bad road conditions, the steering wheel will feel unstable, the bottom of the car will also come out of the abnormal sound, usually the old driver can feel the overall a little loose, when encountering such a situation, it means that the chassis may be loose, and the reasons for this situation are divided into several, only by understanding the reasons, can we better prevent this problem from happening.

The first reason is the aging of rubber parts, we all know that the elasticity of rubber is particularly good, which can buffer the friction between parts and reduce noise at the same time. However, this kind of thing has a lifespan, and it will age after a long time, and the elasticity is not as good as before, so the buffering capacity will decrease, resulting in abnormal noise in each part, so it is necessary to check these rubber parts regularly and replace them in time.

The second possibility is the reason for the shock absorber, the main role of this part is to inhibit **, when the car is driving in the dustpan section, it will have an impact with the road surface, and the shock absorber can well ensure the smoothness of the car, if the shock absorber is damaged, there will be a scoop phenomenon, so that the chassis is loose, so usually check the shock absorber, if there is a leakage to repair in time.

The third is the clearance of the parts, that is to say, the ball head may be loose, this part is like the joint of the human body, if the ball head is loose, there will be a large gap between the lever and other connected parts, if the gap is too large, when crossing some dustpan roads, the screws between the subframe and the suspension will be loose, then the chassis will become loose, so usually check these two parts. Thank you.

If you hear the abnormal sound of "Zizi" in the process of driving, and this is the abnormal sound caused by the problem of the engine belt, because the abnormal sound of "Zizi" is mostly the aging of each belt group of the engine, or the belt is too loose caused by the problem of the tensioner, the friction abnormal sound, belt slippage, etc., if there is a similar "Zizi" abnormal sound, then look for the major belt groups and tensioners inside the engine, such as engine timing belt, generator belt, circulating water pump belt, air conditioning belt, power pump belt, etc. The problem that causes this abnormal noise is the abnormal sound of the engine belt, which is caused by the smooth grinding surface of the joint surface of the belt and the pulley. It usually occurs when the engine speed changes rapidly, and sometimes the belt rings when the load of the attachment driven by the belt increases.

How to solve the problem of abnormal noise of engine belt.

1. Check whether the accessories driven by the belt are damaged, stuck, loose or the power of the accessories has increased.

2. Replace the belt, or use 100 gauze to polish the joint surface of the pulley and the belt (light grinding is fine).

3. The temporary solution can be to drop 1 2 drops of oil on the joint surface of the belt and the pulley (it will not affect the belt slippage).

If it is the generator belt that rings and the headlights are more obvious, you have to take off the generator belt, turn the motor pulley to see if the generator rotates smoothly, if the generator is normal, you can check whether the battery is not stored power, because the battery storage is not good will increase the load of the generator.

Check whether the vehicle is equipped with an underguard, the noise caused by the underguard, or the tightness of the suspension connection, if the abnormal noise of the transmission is obvious, it is recommended to send it to a professional maintenance shop to check the faulty parts, and then replace them.

When the vehicle is driving on a flat road at a low speed, it makes an intermittent and irregular "rattling" sound at the wheel axle, and the sound will be slightly aggravated when the speed increases, but there is no change when going uphill and downhill and turning; When driving on uneven roads, the sound is aggravated, and the sound of pressing the brake pedal with your foot is reduced or eliminated.

It is possible that the foreign object is stuck on the surface of the tire, if it feels like a chirping or crunching sound, it should be loose.