What is the reason for the sudden sinking of the steering wheel?

The car is electronically assisted, the faster the speed, the heavier the steering wheel, the slower the speed, the lighter the steering wheel, then this is normal. Of course, if you find that the steering wheel is also heavy when the car is slow, then there is a problem, it may be a failure of the electronic components or a fault of the circuit, and you should check it immediately.

The reasons for the steering wheel sinking are: 1. Insufficient booster oil, 2. Tire pressure is too low, 3. Bearing fit is too tight, 4. Booster problem, which can be dealt with according to the actual situation.

1. Insufficient booster oil.

Generally, the feeling of the weight of the direction is relatively constant, if it suddenly becomes very heavy one day, or slowly becomes heavier, it may be that the steering power oil is dirty, it is similar to the engine oil, and it needs to be replaced. Or if there is less oil leakage, then there is less power, so the steering wheel becomes very heavy. In this case, it is necessary to maintain it in time, or to add and change the steering oil.

2. The tire pressure is too low.

If the tire pressure is too low, the area of contact between the tire and the road surface will increase, the friction will increase, and the steering difficulty will increase, resulting in a heavy steering wheel, which is not conducive to driving safety.

3. The bearing fit is too tight.

For a rolling bearing connected to each steering system, it is also closely matched with the sliding bearing, so it will lead to the lubrication of the bearing can not be well run, which will affect the phenomenon of stagnation, causing the steering wheel to become sinking, this situation should check the mechanical part and the power assist system, or rule out whether there is a leakage of the inlet seal damage phenomenon.

4. Booster problem.

The relationship between the steering wheel and the booster is inseparable, so when the steering wheel becomes very heavy, it is likely that there are some poor circuit contacts or other problems inside the booster system, which should be repaired by the 4th shop.

The reasons for the sudden sinking of the steering wheel are: 1. The steering column is not lubricated and the friction is large; 2. Lack of steering booster oil; 3. Failure of universal joint, plane bearing and booster system; 4. The chassis suspension balance rod lifting lug sleeve is aging; 5. Abnormal wear on the surface of the brake disc and brake pad; 6. The steering shock absorber is damaged. The steering wheel converts the force acting on the edge of the steering wheel into torque and transmits it to the steering shaft, and the solution to its sudden sinking is:

1. lubricating the steering column; 2. Replenish the steering booster oil; 3. Replace the universal joint, chassis suspension balance rod lifting lug sleeve, plane bearing, and steering shock absorber.

The reasons for the sinking of the steering wheel are:1. Insufficient pressurized oil; 2.Tires with low pressure; 3.tight bearing fit; 4.The boost problem can be dealt with according to the actual situation.

1.In general, the sense of weight in the direction of steering is relatively constant. If it suddenly becomes heavier or heavier one day, it may be that the steering oil is dirty, similar to engine oil, and needs to be replaced.

Or if there is less oil leakage, then there is less power, so the steering wheel becomes heavy. This situation requires prompt service, or the addition and replacement of steering oil. 2.

Low tire pressure will increase the contact area between the tire and the road surface, increase friction, increase the difficulty of steering, and cause the steering wheel to be heavy, which is not conducive to driving safety. In this case, the air pressure should be replenished in time. 3.

tight bearing fit; For a rolling bearing connected to the individual steering systems, it also fits closely with the plain bearing, so the lubrication of the bearing does not work well, which affects the stagnation phenomenon and causes the steering wheel to sink. In this case, inspect the mechanical part and the booster system, or rule out any oil leakage and damage to the inlet seal.

4.The relationship between the power assist steering wheel and the power assist is inseparable, so when the steering wheel becomes heavy, it is likely that the power assist system has some poor circuit contact or other problems, and needs to be inspected and repaired in 4 stores.

Possible causes:

The belt of the power steering pump is loose or over-worn and slippery, and this is mostly the reason for the abnormal sound when slamming the steering;

The power pump itself has a problem, and the pressure is insufficient;

Steering machine failure, generally new cars do not have this problem, old cars occasionally appear;

Steering power oil deteriorates or is missing, and old cars are prone to occur, such as oil leakage from the steering machine, which some drivers have not replaced, which will also have an impact on the system, after all, there are more and more dirty things inside.

Hello, what kind of model is yours?

The steering wheel suddenly becomes heavy, if you suddenly find that there is obvious resistance in the direction of rotation while driving, and the steering wheel cannot automatically return after turning, it may be that there is an air leak on one side of the front wheel, if it is hydraulic assistance, it may be that there is a problem with the booster oil, if it is electric assistance, it may be that the fuse is burned out or there is a short circuit in other lines.

The steering wheel has become a little heavier, in this case, it is recommended to check whether the tire pressure of the car is too low, and also to see if there is a problem with the steering power system of the car.

Before talking about the reasons for the steering wheel sinking, first look at the steering wheel to play the direction of the assistance, because the power assist is different, the system is different, and the reasons for the steering wheel sinking are also different.

The first is the most popular - hydraulic power steering. It is a hydraulic system in which the shaft is connected to the bottom through the steering wheel. To put it simply, with the strength of one hand, this hydraulic pressure will become the strength of ten hands, and the steering wheel will be easy.

If it suddenly becomes very heavy one day, or slowly becomes heavier, it may be that the steering power oil is dirty, and it is similar to the engine oil to be changed. Or if there is less oil leakage, then there is less power, so the steering wheel becomes very heavy and heavy.

In this case, we basically maintain it in time, or add and replace the steering oil. Then it is also possible that the mechanical system itself will have some general-purpose such minor failures.

For example, the fit of each bearing between the steering is too tight, or the lubrication is poor, the ball joint of the steering tie rod is adjusted too tightly, or the oil is less, and the steering shaft and what casing are bent, resulting in stagnation, etc.

Therefore, if you have a heavy steering wheel, it is really necessary to overhaul it.

The second type - electro-hydraulic assistance. The electro-hydraulic power steering system is an upgraded version of the purely mechanical system of hydraulic assistance.

Originally, it was used to provide us with this boost, so that we could hit the direction of light. Now the oil is gone, and the electric motor is used to drive the thing.

One of the advantages of electro-hydraulic power assist is that at high speeds, the faster the speed, the heavier the steering wheel, so as to avoid us from accidentally putting our hands on it, and the whole car will fly out or slide out.

When the speed is relatively slow, for example, when we reverse, move the library, and turn around on the spot, its steering wheel is relatively light.

Because it's electronic, you can control the weight, in which case the car isn't broken.

Therefore, when looking at this direction, we must first understand whether we are traditional mechanical hydraulic, or electro-hydraulic.

So both of these situations seem to have been checked, and there is no problem, and the steering wheel is still heavy. That's why, after a comprehensive inspection of the car, it was found that the tire has a little less gas, and the lack of tire gas will also affect this weight.

The reason why the steering wheel of a car is heavy:

1. If it is hydraulic assistance, check whether the booster oil is lacking, whether there is oil leakage, the lack of oil needs to be replenished to the normal range, and if there is no shortage of oil, check whether the booster pump belt is too loose, and if it is too loose, the belt needs to be tightened, and whether the oil is too dirty to cause poor fluidity, which is generally replaced once every 2 years or 60,000 kilometers.

2. If it is electronically assisted, check whether the fuse is burned out, and whether the line is open or short circuited to the ground.

3. Check the tire pressure, air leakage will also cause the direction to become heavier, so you need to inflate.