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Các lỗi trên xe ô tô thường gặp và cách kiểm tra, xử lý

When detecting a faulty car, it should be checked and corrected as soon as possible. The following are common car errors and how to handle them.

According to the development of science and technology, automobiles are increasingly modernized and intelligentized. However, no matter how advanced, the components and systems in the car are still limited to a certain life expectancy. Therefore, it is difficult to avoid errors and failures, especially after a long time of operation.

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When detecting signs of car failure, car owners should check to find the cause and handle it as soon as possible. Because if left for a long time, these errors will not only affect the operation but also can become serious, more difficult to repair, and have higher remedial costs.

Errors on cars are classified into 2 groups: permanent errors and random errors. A permanent error is an error that always exists until it is handled. Random error is an error that only appears in certain situations and operating conditions.

Common car problems


Check Engine light error

Check Engine light is one of the error signals on cars. When this light comes on, it means that there is a problem with the engine or related components. Usually, the Check Engine light error mostly comes from problems in some parts such as spark plugs, spark plugs, fuel injectors, gasoline vapor control system, exhaust gas recirculation system, etc.

See details: The cause of the car’s Check Engine light is on and how to fix it

The Check Engine light is responsible for notifying when the engine or related parts have an error

High rpm in idle mode

In no-load mode, the engine rpm is usually only about 800 – 1,000 rpm. If the engine rpm increases to more than 1,500 rpm, it is highly likely that the car is having an error of high engine rpm. There are many causes of this error such as: malfunctioning idle valve, leaking pipeline, damaged vent valve, dirty/damaged oxygen sensor…

See details:

Oil pressure is too low or too high

Lubricating oil pressure is usually below 0.5 kg/cm2 when the vehicle is idle and from 2.5 – 4 kg/cm2 when the car is running. The case of abnormally low or high oil pressure is mostly due to a problem with the car’s lubrication system. The cause may be due to lack of lubricating oil, dirty oil, using the wrong type of oil, damaged oil pump, too dirty oil filter…

See details: Causes of low/high oil pressure and how to deal with it

Unusually low or high oil pressure is mostly due to a problem with the car’s lubrication system

The car is difficult to start, does not start the engine

Cars that are hard to explode is one of the common mistakes in cars, especially cars that have not been used for a long time, old cars that have been used for many years. : battery is weak/out of battery, car starter is faulty, relay/fuel pump is faulty, spark plug/igniter is faulty, petrol is contaminated with water… Need to check to find the exact cause to be able to fix it thoroughly restored.

See details:

Car stalls in the middle of the road

Car stalls are usually due to a problem with the operating system. The cause may be because the car’s cooling system is damaged, the engine oil has a problem, the fuel filter is clogged, the fuel pump / high pressure oil pump is damaged, the fuel injectors are clogged…

See details: The cause of the car stalling in the middle of the road and how to handle it

Cars usually stall due to a problem with the engine system

The car runs weakly, accelerates slowly

Cars running weakly, slow acceleration is one of the common errors on old cars or cars with little maintenance. When detecting this error, it is necessary to check immediately, especially when accompanied by signs such as the car is losing oil, releasing a lot of smoke. The cause may be clogged fuel filter, clogged injectors, faulty fuel pump, worn spark plugs…

See details: The reason why the car is running weakly, accelerating slowly

The car jerks when on the gas

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When it comes to car errors, it is impossible to ignore a very common mistake that is the car jerking when on the gas. This error usually originates from the intake system, fuel supply system or ignition system. The most common causes are clogged fuel injectors, clogged fuel filter, faulty ignition system, malfunctioning air flow sensor, malfunctioning throttle position sensor, etc.

See details: The cause of the car jerking when on the gas

The car jerking when on the gas is one of the most common car errors

The car is shaking

The phenomenon of the car shaking is quite similar to the car jerking when on the gas. However, this car error can stem from many different parts. Therefore, it is necessary to first check and determine the location that causes vibration such as vibration in the engine, axle, brake, wheel or tire… After locating the area, finding the cause as well as repairing The fix will be easier.

See details: Causes of car shaking and how to handle it

The car is out of gas

Missing gas is one of the most common auto errors on older cars. There are many reasons leading to this situation, but the most common is because the fuel supplied to the combustion chamber is not enough, the air supply to the combustion chamber is not enough, the exhaust gas cannot escape or the sensor system is malfunctioning…

See details: The cause of the car’s lack of gas and how to fix it

Car is gassy

Car throttle is a phenomenon where the gas station suddenly increases to an abnormally high level. When this car error occurs, it is highly likely that the valve is not loading or the throttle is malfunctioning.

See details: Causes and ways to handle when the car is on gas

When the car is throttled, it is most likely due to an idle valve or a problem with the throttle

The car is overheated, the engine is overheated

Vehicle overheating, engine overheating is one of the serious car errors that, if not handled in time, can cause great consequences. This is the same cause of car fire common. Car overheating usually stems from malfunctioning cooling system such as lack of cooling water, dirty water tank, faulty thermostat, malfunctioning water pump…

See details: The cause of the car’s engine overheating and how to handle it

The car is abandoned

A car stall is a phenomenon where one or some cylinders in the engine do not work. This is also a very dangerous car fault, it should be checked and handled as soon as possible. The reason the car stalls is usually because the ignition system is faulty, the fuel supply system is faulty or the compression stroke pressure is not enough…

See details: Symptoms of car stalling and common causes

A car stalling is a very dangerous car fault, it should be checked and handled as soon as possible

Car has lost fuel

When the car engine will consume fuel. However, if the fuel consumption is abnormally high, it is likely that the car is having a problem. Fuel consumption is one of the most common car mistakes, especially with less-maintained vehicles. The cause of the car’s fuel consumption may be due to a faulty coolant temperature sensor, a lack of cooling water, a dirty engine air filter, worn/dirty spark plugs, low compression ratio…

See details: The cause of the car’s fuel consumption, how to check and handle it

Car lost oil

Vehicle oil will lose a certain amount over time. However, if you see that the car has abnormal oil loss along with signs such as the car is leaking oil, the exhaust gas is grayish blue … then it is highly likely that the car oil is leaking, oil entering the combustion chamber …

See details: The cause of the car’s oil loss and how to check and handle it

If you see that the car has abnormal oil loss, it is highly likely that the car oil is leaking or oil is entering the combustion chamber

The car has an oil leak underneath

This is one of the most common car problems. The cause of the car’s oil leakage under the car is mostly due to aging, damaged or damaged rubber gaskets, oil seals or loose bolts. This error needs to be checked and handled as soon as possible because leaking oil will cause the engine to wear out quickly, causing a high risk of fire and explosion.

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See details: The cause of the car’s oil leakage under the vehicle and how to handle it

Car has strange noises

Strange noises such as clack, safe, filter pile, uu, chirping, sizzling… are signs that the vehicle’s operating system is having problems. Each type of chime will represent one or more different errors. Therefore, it is necessary to carefully examine and find the exact cause for thorough treatment.

See details: Causes of cars rattling, safes, filter piles …

Black smoke coming out of the car

Black smoke is one of the error signals on cars, most often in diesel motorbikes. The main reason is that the fuel is not completely burned in the combustion chamber, following the exhaust gas. Normally, when the engine air filter is clogged, using poor quality fuel, clogged fuel injectors, clogged fuel filter, malfunctioning fuel pump, etc. can all cause black smoke.

See details: Causes of black smoke in the car and how to handle it

The black smoke from the car is mostly due to the fuel not being burned completely in the combustion chamber, following the exhaust gas to the outside

The car has a strange smell

A car with a strange smell is a sign of an error on a certain car that cannot be ignored. When you see a car with a smell of raw gasoline, burnt smell, gas smell, declaration … it is necessary to check the cause and handle it soon. Because most likely originates from the engine system.

See details: The reason why cars smell like raw gasoline, burnt smell, gas smell, declaration…

Car smoke has a strange smell

Car smoke has a burning smell, a gasoline smell, a sweet smell … is a sign that the engine is having problems. Car smoke has a burning smell, usually due to leaking oil, car smoke has a smell of raw gasoline, often because the fuel is not fully burned…

See details: The cause of car smoke has a burning smell, smells of gasoline …

Car smoke has a burning smell, a gasoline smell, a sweet smell… is a sign that the engine is having trouble.

How to detect and catch car diseases


To detect, diagnose and diagnose car problems accurately, one or a combination of the following methods can be used:

Monitor error lights on cars: Car manufacturers set up a system of error lights on the vehicle. Each light symbol has its own meaning, corresponding to one or a group of faults. Through these error lights, the driver can monitor the vehicle’s condition, promptly detect when the vehicle is faulty, and even know where the vehicle is faulty.

See details: Meaning of error light symbols on cars

Through the fault lights, the driver can monitor the vehicle’s condition and promptly detect when the vehicle is faulty

Using a car error reader: This is a type of device that can be connected to the car ECU to help accurately retrieve the error that the vehicle is experiencing. This device is often used by professional auto mechanics to check and diagnose errors. Vehicle owners can also equip their own.

Visual inspection: Through visual inspection, it is possible to recognize signs of car breakdowns, malfunctions, etc., for example, leaking liquid, cracked cables/jacks, dirty sensors…

Noise test: When the car is faulty, it will often make strange noises and cries. Tracking the location of the sound can locate the part that is having problems and easily find the cause.

Test: Errors in cars related to the engine, transmission … can often be felt when driving such as the car is difficult to start, jerks when getting on the gas, short of gas, gas, slow acceleration …

If abnormal signs are detected on the car, it is best to take the car to the garage for inspection and repair as soon as possible.

Duy Nguyen

Nguồn: https://bonbanh365.com
Danh mục: Hỏi đáp

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