Cars always "tremble" unconsciously.

1. Serious carbon deposition.

Long-term bad automobile behavior, such as turning on the air conditioner at idle speed or walking on dusty roads without knowing how to clean the air filter, will cause carbon deposition in vehicles. Failure to accelerate while driving may be accompanied by shaking, which may be serious carbon deposition. If the carbon deposit is not treated for a long time, the fuel consumption will go up, which will bring a bad driving experience and the engine will be damaged. So try to avoid using air conditioner when idling, and clean the air filter regularly to make the car breathe smoothly and run smoothly, otherwise it will not be so simple until there is a problem.

2. Spark plug, throttle and ignition coil problems.

The problems of spark plug, throttle and ignition coil are the most common causes of jitter, and they are also the most easy to maintain jitter faults. When ordinary vehicles find that the fuel consumption is higher than usual, accompanied by unstable idle speed, weak acceleration and jitter, we can start from the above three aspects! Solution: Check whether there is too much carbon deposit in the spark plug and replace the spark plug.

3. The oil pressure is unstable

If you clean up the engine carbon deposit, clean the throttle, change the oil pad and spark plug, etc. You still find the car body shaking at idle speed. I suggest you go to the 4S shop to check whether the oil supply pressure and intake pressure sensors are normal. If the oil supply pressure of the oil pump is abnormal, or the intake pressure sensor has an incorrect value or works poorly, it will cause the body to shake.

4. The drive axle shaft is not concentric.

That is to say, the drive axle is no longer a straight drive axle, but a part is bent. In this case, the car is generally in an idle state. Once it starts to shake, the faster the speed, the more serious the car shake. At this time, you need to see if the half shaft is still concentric.

5. The brake disc is uneven.

The probability of this happening is very small, but it does not rule out that it will not happen. Some car owners' bad driving habits will lead to uneven brake disc consumption, indicating that everything is normal during normal driving, but braking will be accompanied by jitter or brake pedal bounce. Some big repair shops will have devices to detect whether the brake disc is horizontal. If there is some unevenness, there is no need to change the plate directly, because once the plate is changed, there will be more than one replacement. Find a repair shop that can polish brake discs. As long as the most worn place is still in the safe area, it can be polished completely and continue to use!

The above-mentioned automobile jitter problems are the most common, such as spark plug, throttle, ignition coil and carbon deposit. These problems are not difficult to maintain and the cost is not high. Therefore, in the case of car jitter and weak acceleration. Yo-yo still suggests that you start with these simplest, easiest and most common questions.

Body vibration was found during driving. If slight vibration or deviation is found during driving. This is usually caused by tires. First of all, it may be that the wheel balance is not good. The owner needs to do a four-wheel positioning and dynamic balance as soon as possible, and a tire dynamic balance if the vehicle does not run off.

There is a serious situation, which may be caused by the deformation of the steel ring, and the owner needs to go to a professional repair shop for inspection. This situation generally occurs in vehicles with a long service life. Generally, wheel balance should be done when replacing new tires and rims, otherwise the steering wheel will shake easily when the counterweight is uneven. Body shake will affect driving comfort and handling judgment.

On the other hand, it is caused by unbalanced deformation of the transmission shaft. Generally, this happens when there are many cars that have collided with the chassis. Car body shaking at idle speed is a common problem for many car owners.

Finally, the engine oil should remind all car owners that once there is a problem with the vehicle, whether it is shaking or other problems, it should be dealt with in time. High fuel consumption and poor driving quality are trivial matters. Once the car breaks down, it will not be worth the loss. Cars are like human bodies. If you take good care of it, you will have a strong body. Whatever it is, you will have a small problem and eventually be paralyzed.