What is the reason for the whole car shaking phenomenon when driving at high speeds?

When the vehicle is driving normally to about 96km h, the whole car shakes the phenomenon, reduce the speed, the phenomenon disappears, and if the shake occurs again when accelerating to about 90km h, it means that the car chassis is faulty. The causes of the failure are: tire dynamic balance is inaccurate; Front and rear suspension.

Veer. loose transmission and other mechanisms; Front wheel alignment. wheelbase misalignment; The half-shaft clearance is too large.

Solution: Eliminate the above faults in time to avoid a vicious circle and cause other faults.

1. The positioning angle of the front wheel is inaccurate, and the toe is too large; 2. The air pressure of the front forum is too low or the tire is unbalanced due to repair and other reasons; 3. The front spokes are deformed or the number of tire screws is different; 4. The installation of transmission system parts is loose; 5. The transmission shaft is bent, the dynamic is unbalanced, and the front shaft is deformed; 6. The shock absorber fails, the stiffness of the front leaf spring is inconsistent, and the frame is deformed.

High-speed car oscillating steering wheel shake solution:

First, with the increase of vehicle speed, the oscillation becomes stronger.

The second is oscillation at a certain higher speed, which causes the steering wheel to shake.

The drive axle can be erected first, the front wheel is plugged with safety plug blocks, the engine is started and gradually shifted into the high-speed gear, so that the drive wheel reaches the final test oscillation speed.

If both the body and steering wheel shake at this time, it is caused by the drivetrain.

Because the front axle of the front wheel is in a stationary state at this time, if the final test oscillation speed is reached, the car does not shake, then the reason for the oscillation is that the front axle part of the car is faulty;

Check whether the positioning angle and toe of the front wheel meet the requirements, and adjust if it is out of alignment;

Set up the front axle and test the wheels to check the dynamic balance of the wheels and whether the tires are too deformed.

If necessary, a good wheel can be replaced for a comparative test;

Check whether the front axle and frame are deformed, check whether the transmission shaft is bent, and make the dynamic balance of the transmission shaft when possible.

It is possible that the dynamic balance of the car tires is not normal, or it is necessary to see whether the connectors of the chassis engine are aging, damaged, and loose.

If it is when you step on the brakes, it is caused by the deformation of the brake disc, it is recommended to go to the lathe light below, if it is more than 80 miles when shaking, do a dynamic balance to see if the tires and wheels are out of round.

The vehicle shake has the following faults, a step shake clutch failure, two idle speed shake machine claw pad aging, three driving shake front wheel toe fault, four high-speed shake drive shaft failure.

There is a resonance, and domestic cars generally have a strong resonance at a speed of about 120kg.

It is possible to give four doors, the body to do anti-vibration.

Answer: Reason:

1. The positioning angle of the front wheel is inaccurate, and the toe is too large;

2. The air pressure of the front forum is too low or the tire is unbalanced due to repair and other reasons;

3. The front spokes are deformed or the number of tire screws is different;

4. The installation of transmission system parts is loose;

5. The transmission shaft is bent, the dynamic is unbalanced, and the front shaft is deformed;

6. The shock absorber failed, the front leaf spring rate was inconsistent, and the frame was deformed.

Diagnosis and exclusion of high-velocity vibrations

1. There are two situations of high-speed vibration, one is that the vibration is strong with the increase of vehicle speed, and the other is that the vibration occurs during a certain higher speed period, which causes the steering wheel to shake. When judging, the drive axle is erected first, the front wheel is plugged with safety plug blocks, the engine is started and the high-speed gear is gradually shifted, so that the drive wheel reaches the final test vibration speed. If both the body and steering wheel shake at this time, it is caused by vibrations caused by the drivetrain.

Because the front axle is in a stationary state at this time, if the final test vibration speed is reached, the car does not shake, the cause of vibration is the fault of the front axle part of the car;

2. Check whether the positioning angle of the front wheel and the front wheel meet the requirements, and if it is inaccurate, it should be adjusted;

3. Set up the front axle to test the wheels, check the static balance of the wheels and whether the tires are too deformed. If necessary, a good wheel can be changed for comparative experiments.

1. When the vehicle is driving normally to about 96km h, there is a whole car shaking phenomenon, reduce the speed, the phenomenon disappears, if the acceleration to about 90km h shakes again, it means that the car chassis is faulty. The causes of the failure are: tire dynamic balance is inaccurate; Loosening of front and rear suspension, steering, transmission and other mechanisms; front wheel alignment, wheelbase misalignment; The half-shaft clearance is too large.

First of all, the misalignment of the tire will cause the wheels to jump while rolling, which is the main cause of the whole car shaking.

2. Secondly, the suspension mechanism, steering mechanism, and transmission mechanism are loose and loose, resulting in the toe-in value and wheelbase inaccuracy, and the leaf spring is too soft, resulting in the resonance of the vehicle during driving and inducing the whole vehicle to shake. Again, the half-shaft clearance is too large, so that the rear chemical in the driving irregular movement, wear and tear aggravated, resulting in the imbalance of the rotating mass, causing the whole car to shake. If these faults are not eliminated in time, it will lead to a vicious circle and lead to other failures.

It is recommended to come to the store for four-wheel dynamic balancing and four-wheel alignment.

When the car is driving at high speed, the whole car shakes, then consider whether the tire pressure of the car is inconsistent with the tire pressure of the four wheels? That's why there is such a problem, there should be, the tire bud is high, and some tire pressure is low, otherwise check whether the dynamic balance weight on the tire will be missing? If the problems that arise in the future, if they are not, then you need to do a four-wheel alignment, which can basically solve such a problem.

The most common reason why the car is shaking when it runs 120 is that the tire rim needs to be dynamically balanced. Or the tires are aging and deformed, and the rims are deformed. The dynamic balance of the tire can be carried out according to the situation, and the state of the tire rim must be checked during the dynamic balance, and the deformation must be replaced;

Other reasons include if the engine failure light has been lit or suddenly lit and is accompanied by body shaking. The reason for this situation is due to the improper matching of the engine mixture, and the common problems are spark plugs, ignition coils, fuel injectors, carbon deposits, fuel pumps, etc., due to poor work, a single cylinder or multiple cylinders work poorly; According to the content of the fault code in the engine, the cause can be checked and determined; In addition, it is also caused by aging and damage to the claw pads of the engine or transmission.

Replacement can be ruled out; Caused by damage to the chassis half shaft or transmission shaft; It mostly occurs in acceleration or deceleration conditions.

There are many kinds of parts and reasons for the shaking of the car, after all, it seriously affects the driving safety and the feeling of using the car, so it is recommended that it is best to check and deal with it in time.

If there is a shaking phenomenon when the vehicle is driving on the highway, it is likely to be caused by excessive speed.

What happens when the vehicle shakes at high speeds? It is a normal situation, when driving at high speeds, because the speed of the car is relatively fast, so the body is prone to shaking.

The causes of the failure are: inaccurate tire dynamic balance; Front and rear suspension. Veer. loose transmission and other mechanisms; Front wheel alignment. wheelbase misalignment; The half-shaft clearance is too large.

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