What causes the body to shake badly?

Updated on Car 2024-05-02
11 answers
  1. Anonymous users2024-02-08

    Analysis of the causes of car shake:

    1. Suspension system problems.

    Body shake is also related to the aging of the suspension system. It is mainly responsible for filtering out the shake of the engine when it is running, and if there is a problem with the suspension, these vibrations will be transmitted directly to the steering wheel and cab, affecting the driving. When the engine is idling, it is easy to cause shaking when the electrical system in the car is turned on.

    The engine will increase the load when the electrical appliances are turned on, causing the idle speed to drop, and to compensate for the jitter caused by the idle slip, the engine will automatically increase the speed by partially. So, when the electrical system, especially the air conditioner, is turned on, the engine will often shake. This jitter is likely to be caused by the aging of the shock absorber and needs to be replaced in time.

    2. Tire problems.

    For tires, the tire must be balanced once when the car is replaced with new tires and new steel rims, otherwise the steering wheel will be prone to shake when the counterweight is uneven. If you find that the tire weight is not equal, you need to add lead to the inside of the rim to average the weight of the tires on both sides. Whether it is a general steel ring or a lightweight aluminum ring, it may deform or crack when subjected to a certain external force.

    Deformation of the rim can cause shaking when driving, uneven weight of the rim can also cause shaking when driving, and incorrect angle of the rim can also cause shaking when driving.

    3. Throttle problems.

    The most common cause of car shake may be a dirty throttle valve and excessive carbon build-up in the fuel injector. After the car travels for a period of kilometers, the throttle valve will be too dirty to cause the throttle to close loosely or the idle motor to stagnate, resulting in the engine idling speed is too high, and the carbon deposits generated by the engine in this process will also cause the vehicle to shake, especially when starting the vehicle, the engine will shake more than normal, and even sometimes there will be a phenomenon that can not be started at one time. Therefore, when the body shakes, the first thing to do is to check the throttle and fuel injectors.

    If you find that the throttle valve is too dirty or the fuel injector has too much carbon deposit, you should clean it with fuel injector cleaner or throttle cleaner in time.

    4. The oil pressure is unstable.

    If you still find that the body shakes after these are finished, it is recommended that you go to the repair shop to check whether the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is not normal, the intake pressure sensor is wrong and improper work will cause the body to shake.

  2. Anonymous users2024-02-07

    Let me tell you, the electronic fan is activated! Normal phenomenon, if the shaking is violent, go to the 4S detection to replace the electronic fan for free, and the answer is complete.

  3. Anonymous users2024-02-06

    1. The oil pressure is unstable.

    Abnormal oil pump supply pressure or incorrect intake pressure sensor and poor operation can cause body shake. Solution: Check the oil pressure and replace the parts if necessary.

    2. Aging of engine parts.

    Car jitter is also associated with aging of the engine feet. The engine foot is actually the suspension system of the engine, and the engine foot is responsible for absorbing the subtle shake of the engine when it is running, and if there is a problem with the engine foot, these vibrations will be transmitted to the steering wheel and cab, causing shaking when idling. Workaround:

    Replacement parts. 3.The engine has a lot of carbon deposits.

    The most common cause of car shake is a dirty throttle valve or excessive carbon build-up on the fuel injector. When there is too much carbon inside the engine, the gasoline ejected from the cold-start injector will be absorbed by the carbon deposit, resulting in a cold-start mixture that is too thin and makes it difficult to start. Workaround:

    Clean the oil circuit and check whether the idle motor has carbon deposits and should be cleaned.

  4. Anonymous users2024-02-05

    The car is shaking badly, which may be caused by these reasons, and you can check it yourself at home.

  5. Anonymous users2024-02-04

    If carbon deposits occur in the valves and intake tracts of the engine, the ECU will make an error in judgment because the carbon deposits can absorb the appropriate amount of fuel. If the computer actually controls the injection of hypothetical 100 parts of oil and gas, but only 90 parts actually enter the cylinder (10 parts are absorbed by carbon deposits), then even if the remaining 90 parts of mixed oil and gas are fully combusted, this cannot achieve the required power, and the phenomenon of jitter is inevitable.

    Causes of idle jitter:

    1. The engine carbon deposition is serious. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposition inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by a large amount of carbon deposition, and the mixture is too thin due to forest rent, making it difficult to start.

    After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. The mixture is sometimes dilute and sometimes thick, which will cause idle jitter after cold start. The lower the temperature, the greater the amount of oil required for cold starts, and the more the presence of carbon deposits affects cold starts.

    The solution is to clean the carbon deposits at the throttle and injector.

    2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check if the ignition system is faulty and if there is too much carbon deposited in the spark plug.

    3. The oil pressure is unstable. If you have cleaned the engine carbon deposits, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

    Solution: Ode to friends;

    The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car factory is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

  6. Anonymous users2024-02-03

    If the body shakes heavily while driving, it may be caused by a problem with the dynamic balance of the wheels. If the body shakes heavily at idle, it may be caused by damage to the engine floor pads. If the mat of the machine is damaged, it can be replaced with a brand new one.

    If there is a problem with the wheel balance, simply re-check the balance of each wheel.

    A wheel is a part that rotates at high speed. If there is a problem with the dynamic balance, it will cause abnormal shaking of the body at high speed.

    Every time you change a tire, you should do a good balance test for each wheel to prevent abnormal wheel shaking when driving at high speed.

    The engine of the car is connected to the frame, and the parts where the engine is connected to the frame are organic floor mats.

    Machine mats are rubber products that prevent the engine from transmitting vibrations directly to the body.

    However, rubber products will age and harden after a long time, and some car mats will even break after a long time.

    If the machine mat is damaged, the engine transmits vibrations directly to the body, causing the body to shake abnormally.

    If the machine mat is damaged, replace it with a new one.

    When replacing the machine floor pads, it is necessary to jack up the engine.

    Millions of car purchase subsidies.

  7. Anonymous users2024-02-02

    The reasons for the severe body shaking: 1. Ignition system failure; 2. The foot glue is aging or loose; 3. Carbon deposition; 4. The fuel quality is too poor; 5. Insufficient tire pressure or balance problems; 6. The clutch is not completely separated; 7. The spark plug is burned, the spark plug gap is too large or loose. Too much carbon deposit:

    If the engine cylinder has heavy carbon deposits, it will cause the spark plug and valve ruler to burn and clog, which will directly cause the car to shake when idling. If the acceleration ability of the car is not as good as before, and the jitter is very long, then you can consider the engine cylinder supernatant trapped washing. Failure of the oil supply system:

    Unstable oil pressure can easily lead to unstable mixture concentration, which will not only lead to jitter, but also unstable idle speed. First, consider replacing your gas filter. After prolonged use, the filter may become clogged.

    Then, check the oil pressure that has not passed through the gasoline filter. If it's not normal, it may be a problem with the oil pump.

    Aging engine mats: This is also a very common jitter factor. If your car's engine shake is getting worse, but the driving force is not decreasing, consider whether it is a floor mat problem.

    Cylinder misfire: This is also the most common factor in engine shake, if not all. The problem is with the ignition coil or spark plug of the engine.

    If there is a problem with the ignition coil or if the spark plug fails to ignite due to some circumstances, the car will shake.

    Millions of car purchase subsidies.

  8. Anonymous users2024-02-01

    Slight jitter is normal, if the jitter is more severe, you need to check it.

    The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector.

    When the carbon deposit inside the engine is too much, the gasoline sprayed out by the cold start fuel injection head will be absorbed by the carbon deposit in large quantities, resulting in the mixture of cold start being too thin, making it difficult to start, in this case, only when the gasoline absorbed by the carbon deposit is saturated, it is easy to get on the car, and the gasoline adsorbed on the carbon deposit after the car will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, causing idle shaking after cold start.

  9. Anonymous users2024-01-31

    Body shake is generally a problem to consider. Tire dynamic balancing. When the tires are unbalanced, the body is prone to shaking.

  10. Anonymous users2024-01-30

    If the whole body shakes when the vehicle is tall, it is mostly caused by the poor dynamic balance of the tires.

  11. Anonymous users2024-01-29

    Problems with the ignition system are also one of the reasons for the vehicle shaking, when there is a problem with the spark plug, high-voltage wire or ignition coil in the ignition system, the car will also be shaken when starting, and the owner can judge the cause of the vehicle's idle jitter by checking the spark plug.

    3. The oil pressure is unstable.

    When the data of the oil supply pressure of the automobile oil pump is inaccurate, the vehicle will also shake when idling, check the oil pressure, and deal with it in time if it needs to be replaced to avoid causing greater failures.

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