The direction of the cold car sinks in the direction of the light and hot car, what s going on

The direction of the cold car sinks in the direction of the light and hot car, what is going on:

First, the cause of the failure.

The knuckle arm is deformed. Steering knuckle thrust bearings are missing or damaged. The gap between the kingpin and the bushing of the steering knuckle is too small or there is a lack of oil.

Deformation of the front axle or frame causes misalignment of the front wheels. Insufficient tire pressure. The steering gear bearing assembly is too tight.

The meshing clearance of the transmission pair is too small. The ball joint pin of the transverse and straight tie rod is assembled too tightly or the joint is short of oil. The steering shaft or main pipe is bent, rubbing against each other or jamming.

Improper lubrication of the steering gear, improper adjustment of the toe.

2. Fault diagnosis and elimination.

If you feel that the steering wheel is flexible when you prop up the front axle, the front axle and wheels will fail. This is because when the front axle is propped up, the contact resistance between the wheels and the road surface when the steering wheel is turned is no longer there. At this time, you should carefully check whether the front wheel air pressure is too low, whether the front leaf spring is good, whether the frame is deformed, etc.

Prop up the front axle and turn the steering wheel, if you feel heavy steering, it means that the fault is in the steering gear or steering transmission mechanism. At this time, the steering arm can be removed, and then turn the steering wheel, if it feels heavy, it means that the steering gear is faulty inside, and the damaged parts should be repaired or replaced as needed.

After removing the steering arm, turn the steering wheel, if it feels light and flexible, the steering gear is not faulty. After the above method inspection, if the tire, front leaf spring, frame, and steering gear are all faulty, it can be basically determined.

Hello! Check if there is any problem with the booster pump and whether the booster oil has been changed.

If it is oil circuit control, it is possible that your oil circuit may leak, or there may be a problem with the oil pump, because it is sudden.

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.

Generally, the cold weather will not cause the steering wheel to be heavy, and it is necessary to check whether there is a lack of booster oil, whether the booster pump is normal, and whether the plane bearing of the shock absorber is worn.

Causes and solutions for heavy steering wheels:

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.

Extended Resources:

Power steering. In order to reduce the operating force of the driver's movements on the steering wheel (which can also be called a steering wheel), a device that uses external power to generate steering assistance is called a steering power assist device.

Classification of power steering devices:

There are three types of power steering: mechanical hydraulic power assist, electronic hydraulic power assist, and electric power assist.

1) Mechanical-hydraulic power steering.

Mechanical-hydraulic power steering is still the most widely used. In terms of cost, space and weight, the method of augmenting servo pressure with pressure oil is mature and advantageous.

2) Electro-hydraulic power steering.

Since mechanical hydraulic power requires a large amount of engine power, improvements have been made on the basis of mechanical hydraulic power assist and more energy-efficient electro-hydraulic power steering systems have been developed.

The steering oil pump of this system is no longer directly driven by the engine, but driven by an electric motor, and an electronic control system is added on the basis of the previous one, so that the size of the steering assist force is not only related to the steering angle, but also related to the vehicle speed. The mechanical structure has added a hydraulic reaction device and a liquid flow distribution valve, and the new electronic control system includes a vehicle speed sensor, a solenoid valve, a steering ECU, etc.

3) Electric power steering.

Compared to electro-hydraulic power steering, the hydraulic circuit bypass and direct assistance with the help of an electric motor have additional advantages in terms of weight and engine compartment space, as it eliminates all hydraulic components.

Note: Driving safety first, find out the cause in time and maintain it

The reason is that the steering oil is too viscous. In winter, the viscosity of the steering oil becomes larger, which makes the booster pump inadequate, resulting in a heavy steering wheel. In addition, in winter, due to the high viscosity of the oil, the oil return pressure will be slightly higher, and the oil leakage on the upper cover of the steering machine will also cause the steering wheel to be heavy.

1. The tire pressure is too low. This situation can be restored to normal by simply adding to the standard tire pressure.

2. Low speed. When driving in this case, increasing the speed of the car can alleviate the problem of the power steering machine sinking.

3. The on-board battery loses power, and in this case it is to charge the battery.

4. In the case of the fuse is burned out, the line is broken or the ground is short-circuited, in this case, the fuse should be repaired.

5. If the steering wheel is repeatedly rotated in situ or at low speed, the load on the power assist system is great, and it is easy to protect the steering machine at high temperature, resulting in heavy steering, and it can be restored after heat dissipation, which is a normal phenomenon and does not need to be maintained.

Precautions for using the steering machine, 3 years or run to about 60,000 kilometers for maintenance. There will be no oil leakage in the case of no damage to the steering pump, but it is still necessary to check the connections and connections in the power system and steering system to see if there is any leakage.

The solution to the heavy steering wheel in cold weather.

1. Replace the booster oil regularly. With the long-term use of the car, the booster oil will inevitably become dirty and unclean. The booster oil should be replaced regularly to ensure the normal driving of the car.

2. Ensure that the tire pressure of the car and the power of the car battery are sufficient. After the car has been used for a long time, it is inevitable that the tire pressure will be insufficient, and it should be replenished in time. The capacity of the battery will also drop quickly in winter, so you should pay attention to the battery power and charge it in time.

Prevents the steering wheel from becoming heavy when it's cold.

3. Check the booster system. Most of the parts of today's cars rely on electricity to operate, so when the steering wheel is not easy to use, you should check whether there is a problem with the power assist system in time. If a problem is found, it should be repaired by a professional maintenance unit in time.

Booster oil is a decrease in fluidity as the temperature decreases

Because the fluidity of the steering fluid decreases as the temperature decreases, the steering wheel will sink when the weather is cold. Now the direction of the car is hydraulic, the weather is cold because the direction oil is too sticky, if the weather is cold, the car should be warmed up in advance, so that the car is also good. If it is a mechanical booster pump, it should be time to replace the steering booster oil.

Reasons why the steering wheel of a car becomes heavier:

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.

If it is a mechanical booster pump, it should be time to replace the steering booster oil, and the situation you said should be reduced after the car is warmed up or after driving for a period of time.

Reasons for the weight of the steering wheel:

1. If it is hydraulic power, check the lack of power oil and no oil leakage, the oil shortage needs to supplement the normal range, check whether the booster pump belt is too loose, too loose and need to tighten the belt, and check whether the petroleum products are too dirty resulting in poor fluidity, generally every 2 years or 60,000 kilometers to replace it.

2. If it is an electronic power supply, check whether the fuse is burned out, and whether the line is open or short circuited to ground.

3. Check the tire pressure, air leakage will also cause heavy direction and need to be inflated.

Steering wheel: 1) It is generally connected to the steering shaft through a spline, and its function is to convert the force acting on the edge of the steering wheel by the driver into torque and transmit it to the steering shaft.

2) When using a steering wheel with a larger diameter, the driver's hand on the steering wheel can be used less. The steering transmission shaft is used as a connector between the steering gear and the steering shaft, which is conducive to the generalization of the steering gear, compensates for the errors generated during manufacturing and installation, and makes the installation of the steering gear and steering wheel on the whole vehicle more reasonable.

Buick Regal is a mechanical hydraulic power steering, this steering system has a characteristic, that is, whether the car is steered or not, this system has to work, and when the speed of the large steering vehicle is low, the hydraulic pump needs to output more power to obtain a larger boost. So, it's also a waste of resources to a certain extent. Can recall:

Driving such a car, especially when turning at low speeds, feels that the direction is heavier and the engine is more laborious. Due to the high pressure of the hydraulic pump, it is also easier to damage the booster system.

According to the landlord, there should be a problem with the booster system, because my first car was Buick's, although it is not as advanced as the landlord, but the steering system is a type. I don't think it's normal to be able to easily play with one hand after getting into the car. It's better to reflect the situation in the 4s, and you have to find the technical director, it's useless for you to find an ordinary maintenance worker.

In addition, the landlord's battery should be a loss of power, in the case of battery leakage can not be on the car, through a third-party means to drive to 4s as soon as possible to replenish the power. It's useless to just rely on the driving process to recharge, and the charging time during the driving process is short, even if you run long distances, you can't run for five or six hours at a time. It's like a mobile phone, it's useless to charge it and dial it down.

1. The symptoms of cold car on the steering wheel are mild, and the main reasons for the aggravation of hot car are as follows:

1) Deformation of the knuckle arm.

2) The booster pump is worn out, resulting in insufficient boost. Such as low pump oil pressure, blocked oil inlet, etc. The power steering oil should be replaced.

3) The gap between the kingpin and the bushing of the steering knuckle is too small or there is a lack of oil; The ball joint pin of the transverse and straight tie rod is assembled too tightly or the joint is short of oil.

4) Failure of the steering machine. Such as committing a card. Leakage of seals, etc.

5) The steering gear bearing assembly is too tight.

6) The steering shaft or main tube is bent, rubbing against each other or stuck.

2. Cold and hot cars.

The state when the engine water temperature is lower than 60 degrees is called a cold car, and more than 60 degrees is a hot car, which is obviously different from the high speed of the cold car when idling (1,000 rpm or more, the normal idle speed is 800) in order to preheat the engine as soon as possible to achieve a suitable working temperature. Because in the cold car state, the piston will expand when the cylinder is running in the cylinder body due to the influence of temperature, this process is best not to increase the load on the engine, otherwise the side will have a negative impact, and the cylinder will be seriously pulled. So especially in winter, the hot car process is important.

Summary. Hello, the steering wheel is very light at the start of a cold car, but the reasons and treatment methods related to the steering wheel becoming heavy after driving for a while are as follows.

First, if it is electronically assisted, then in this case, it is necessary to check the top glue of the shock absorber of the vehicle or the ball joint of the chassis, and if there is a problem, it needs to be replaced.

Second, the program of the steering system of electronic power steering needs to be re-matched.

Third, if it is hydraulically assisted, it is recommended to replace it with a new booster oil to try.

The steering wheel was very light when the cold car started, and after a while, the steering wheel became heavy, what's going on, gods.

Hello, don't worry, I can ask for your question, but wait a minute, I need text for about 2 minutes.

Hello, the steering wheel is very light at the start of a cold car, but the reasons and treatment methods related to the steering wheel becoming heavy after driving for a while are as follows. First, if it is electronically assisted, then in this case, it is necessary to check the shock absorber top rubber of the vehicle or the ball head of the chassis, and if there is a problem with the collision, it needs to be replaced. Second, the program problem of the steering system of electronic power steering needs to be re-lit to match the program of the electronic power steering system.

Third, if it is hydraulically assisted, it is recommended to replace it with a new booster oil and try to get it with a smile.

It may be that the weather is cold, and the lubrication is not very in place, so as soon as you come up, you turn the steering wheel and feel that the steering wheel becomes heavier, and the car may be relieved by heating up a little.

The hydraulic oil of the steering machine has poor fluidity in winter, and after running for a period of time, the oil temperature is high, and the fluidity is good, and the direction is not so heavy.

Summary. It can be due to a number of reasons, here are the possible causes: Power steering power pump problem:

The power steering power pump is an important part of the control steering system. If there is a problem with the booster pump, it may cause steering to feel light or heavy. Especially in cold driving, the booster pump may take longer to reach normal working condition, resulting in light steering.

Steering transmission mechanism problem: The steering transmission mechanism includes components such as steering gears and transmission shafts. If there is a problem with these parts, such as wear or looseness, it can cause the steering wheel to feel heavy or loose.

If these components are more likely to be damaged or fail in a cold car than in a hot car, it can cause the steering wheel to feel light when the car is cold. Steering wheel tire problems: Tire wear or insufficient air pressure can cause light or heavy steering.

If the tires have less pressure when they are cold, they may result in lighter steering when cold. Vehicle suspension system problems: A vehicle's suspension system can affect the vehicle's stability and steering feel.

If there is a problem with the suspension system, such as a failure of springs or shock absorbers, it can cause the steering wheel to feel heavy or loose.

It can be due to a number of reasons, the following are the possible causes: Power steering power pump problem: Power steering power pump is an important component of the steering system.

If there is a problem with the booster pump, it may cause steering to feel light or heavy. Especially in cold driving, the booster pump may take longer to reach normal working condition, resulting in light steering. Steering Transmission Mechanism Problem:

The steering transmission mechanism includes components such as steering gears and transmission shafts. If there is a problem with these parts, such as wear or looseness, it can cause the steering wheel to feel heavy or loose. If these components are more likely to be damaged or fail in a cold car than in a hot car, it can cause the steering wheel to feel light when the car is cold.

Steering wheel tire problems: Tire wear or insufficient air pressure can cause light or heavy steering. If the tire pressure is lower when it is cold, it may cause lighter steering when it is cold.

Vehicle suspension system problems: A vehicle's suspension system can affect the vehicle's stability and steering feel. If there is a problem with the suspension system, such as a failure of springs or shock absorbers, it can cause the steering wheel to feel heavy or loose.

It should be noted that the above reasons are only some situations that may lead to early bending and cause the steering wheel to be light or heavy, and the specific reasons for dismantling the congratulatory need to be determined according to the vehicle and the situation of the stuffy body. If you encounter this problem frequently, it is best to send your vehicle to a professional auto repair center to check and diagnose the problem.