How to Handle the Situation of Countless Cars that Shock While Running

The phenomenon of countless car jerks while driving is one of the quite common problems that most car owners have experienced. When driving a car with a manual transmission (automatic transmission) moving on the road, the car suddenly jerks, shakes strongly, feels like it has lost traction or suddenly missed the throttle, making it difficult for the driver to control. This is not only an annoying condition that reduces the driving experience, but is also potentially dangerous and can lead to traffic accidents.

The cause of this phenomenon can come from many different factors such as air intake system errors, broken ignition, fuel supply system problems or mechanical errors from parts such as cylinders and pistons. , transmission rod, etc. These errors cause the process of fuel supply, intake air and spark generation to be asynchronous, causing loss of traction and jerking of the vehicle. If there is no way to fix it soon, the car will quickly deteriorate, reduce its lifespan and spend a lot of money on repairs and maintenance in the future.

So how is it that we so often forget to teach respect by respecting the children themselves? Countless cars jerked while running why? How effective is the treatment? Together Thanh Phong Auto Find out in the following article.

What Risks Do Countless Cars Stuck While Driving?

Countless cars are jerked while running is a situation where when the driver puts the car into a state of multitude, the car jerks suddenly and does not move as smoothly as usual. This phenomenon can occur when the vehicle is traveling at high or low speed, which can cause a feeling of insecurity for the occupants of the vehicle.

Not only that, countless cars that are jerked while running also have many potential risks such as:

• Lose control: The car jerks suddenly, making the driver easily startled and unable to control the speed or direction of the vehicle's movement (wrong gas pedal, sudden steering). This can lead to serious traffic accidents.
• Damaged parts: When a car is suddenly jerked, it can directly damage related parts such as suspension, tires, brakes, etc., leading to an unsafe car situation during use.
• Affects systems if not corrected in time: The situation of countless cars jerking while running can be a sign of "call for help" of damage to the vehicle, if the car owner does not handle it in time, the systems will be seriously affected, causing the car to be damaged. degraded, inefficient and no longer safe.

Causes & Treatments of Countless Cars Jerking While Driving

1. Fuel filter clogged

Reason: Automotive gasoline and oil filter systems have the effect of cleaning fuel before entering the combustion chamber. After a period of use, these parts often become clogged due to impurities. If not cleaned periodically, fuel will not be supplied to the injection system. This will cause the engine to stall in the middle of the road or jerk during extreme shifts.

Treatment: Check and clean the fuel filter system, if these parts have problems, they can be replaced.

2. Air filter is dirty

Reason: The air filter is responsible for protecting the engine from agents such as dirt, pollutants, and foreign objects entering the engine. If this part is dirty, there will not be enough air entering the combustion chamber, reducing the engine's combustion efficiency, leading to the vehicle vibrating during acceleration.

Treatment: Clean or replace the car air filter.

3. The ignition system has a problem

Reason: Problems in the ignition system such as spark plugs, power dividers, spark plugs, high voltage wires, etc. will all affect the spark plug's ability to ignite. At this time, the engine will not be able to start, start poorly or vibrate when starting.

Treatment: It is possible to remove the spark plugs and clean the contacts in the ignition system. If the spark plug is damaged or worn, it should be replaced.

4. Fuel injectors are dirty

ReasonThe fuel injector is responsible for providing fuel to the car engine. If used for a long time, this part can become dirty, causing many phenomena such as difficulty starting the vehicle, engine jerking when stepping on the gas / accelerating / stopping the car, fuel consumption, slow response, etc.

Treatment: Check and maintain fuel injectors regularly, especially when the vehicle is running more than 15.000km.

5. The oxygen sensor is dirty

Reason: The oxygen sensor has an important role in measuring residual oxygen in the engine exhaust and transmitting data to the ECU control system. From there, the ECU will adjust the air-to-air ratio to ensure the most optimal combustion efficiency in the engine.

If the oxygen sensor is dirty, it will cause erroneous information, affecting the amount of fuel entering the combustion chamber, leading to conditions such as fuel loss, injectors being overloaded, and the vehicle moving jerky and vibrating. shake when countless.

Treatment: Check, clean or replace the oxygen sensor; If the vehicle is about 10.000km, it should be replaced.

6. MAF mass air flow sensor is defective

Reason: The MAF sensor is used to monitor the amount of gas moving from the outside of the intake manifold into the combustion chamber and transmit data to the ECU control system. If this part is dirty or faulty, it can cause information interference, affect the control of the amount of gas entering the combustion chamber, make the air-fuel ratio incorrect, increase or decrease the efficiency of the combustion chamber. This leads to the car stalling, convulsing, difficult to accelerate or rush back before pressing the gas.

Treatment: Use a resistance meter to check the MAF sensor signals, compare with the manufacturer's parameters. If there is a deviation, it can be cleaned, replaced or taken to the nearest garage for assistance.

7. The gearbox control module is faulty

Reason: The transmission control module is used to change gears when the driver accelerates. If this part is faulty, the gearshifting process will be less flexible, delayed, leading to jerky when pedaling.

Treatment: You should take your car for maintenance, repair or replacement of the transmission control module.

8. The distributor cap is damp

Reason: The power distributor cap is the bridge connecting the high-voltage wires to the cylinder, if this part gets wet (because the car is parked in a humid environment for too long), it will affect the power distribution, thereby making the car easily damaged. jerky when moving.

Treatment: Clean the distributor, replace damaged parts, and avoid excessively wet parking areas.

9. The throttle cable is worn

Reason: The throttle wire is responsible for mechanically linking the throttle and pedals. If used for too long, this part may wear out, affecting the effectiveness of the accelerator. As a result, the vehicle may jerk, difficult to accelerate, and wobble at loads.

Treatment: It is necessary to replace the gas line when detecting wear, cracking or breaking.

10. The catalytic converter is clogged

Reason: The task of the catalytic converter is to control emissions, converting toxic gases in the exhaust fumes into less toxic ones (by redox reactions). If this part is blocked, it affects the exhaust process, easily causing conditions such as: the exhaust has an unpleasant smell, the car consumes fuel, the Check Engine light comes on and the car jerks when moving. .

Treatment: Use a specialized cleaner to clean the catalytic converter, or take the car to a reputable garage for a new one.

How to Prevent Cars from Being Shocked

To avoid experiencing countless car shocks, you should:

Periodic maintenance

• Change engine oil at the correct intervals
• Replace air filter and fuel filter as recommended
• Check and clean parts such as spark plugs, ignition wires, etc.

Use the correct type of fuel

• Use fuel that meets good quality standards
• Avoid using poor quality or mixed fuel

Drive the right way

• Avoid stepping on the accelerator suddenly or increasing the engine rpm unusually high
• Warm up the engine before running at high speed

Monitor vehicle condition regularly

• Observe exhaust smoke and unusual noises
• Check the warning light on the dashboard

Implementing all of the above precautions will help your car operate smoothly and avoid jerking while driving.

Most Frequently Asked Questions

1. At what speed does the condition of a car's countless jerks while running usually occur?

This phenomenon can occur when the vehicle is running at a low speed below 30 km/h or a high speed above 80 km/h, depending on the cause of the problem.

2. In addition to causing discomfort, how does countless car shocks also affect the safety of people sitting in the car?

This condition can lead to loss of steering control, sudden braking, increasing the risk of collision and serious traffic accidents, threatening the lives of people sitting in the vehicle.

3. What are the consequences of a dirty car air filter besides causing the car to vibrate when shifting?

Car air filter Being dirty reduces the amount of clean air entering the engine, affecting the combustion process, leading to:

• The engine is difficult to start and easily stalls
• Consumes 10-20% more fuel than usual
• Poor engine response, reduced power
• Increased toxic emissions

4. What are the signs that the car ignition system is having problems?

Some common symptoms of a malfunctioning ignition system include:

• Difficult to start or cannot start
• The engine vibrates and runs unevenly
• Strange noise from the engine
• The car consumes abnormal fuel
• Burning smell, white/blue smoke from exhaust pipe

5. What is the recommended spark plug replacement interval?

Most manufacturers recommend replacing new spark plugs after about 20.000 - 30.000 km for regular spark plugs, or 60.000 - 100.000 km for high-end spark plugs (depending on vehicle type and operating conditions). Additionally, you can refer to some Signs that car spark plugs have problems and the fastest and most effective way to handle it.

6. What are the causes of abnormal fuel consumption in cars?

In addition to a dirty oxygen sensor, some other causes that cause the car to lose fuel include:

• Air filter and fuel filter clogged
• The fuel injection system has a problem
• Tires are under-inflated or excessively worn
• Unreasonable driving habits

Read the article now to share these What causes cars to waste fuel? and the safest, most effective repairs come from industry experts.

7. After how many kilometers does the mass air flow sensor (MAF) need to be cleaned?

According to recommendations from car manufacturers, the MAF sensor should be cleaned periodically every 30.000 - 50.000 km, combined with engine air filter maintenance.

8. What are the warning signs that the transmission control module is having problems?

Common symptoms of a faulty transmission control module include:

• The transmission is slipping, difficult to shift or won't go into gear
• The car jerks when accelerating or decelerating
• The engine stalls when shifting gears
• The transmission warning light lights up on the dashboard

9. How can parking a car in a wet place affect the electrical components?

High humidity makes it easy for water to condense and seep into electrical parts such as distributor covers, wires, sensors... causing corrosion, short circuits, damaging components and affecting the vehicle's operation.

10. What are the signs that the car's throttle cable is worn out and needs to be replaced?

When the throttle cable is worn, you may observe:

• The surface of the wire is rough, cracked, and peeling
• The wires are broken
• The accelerator pedal is unusually heavy or light
• The car has difficulty accelerating and jerks when shifting

In short, there are many reasons for this phenomenon countless cars jerked while driving. This may be a sign that car parts are having problems, you need to observe, preliminary check and periodically maintain them to promptly detect errors and fix them early, to avoid incurring a lot of costs in the future. after.