What is the reason for the whining sound of the car accelerating?

The main reasons why a vehicle makes a whining sound when accelerating are as follows:

1. The tire pressure is too high to cause abnormal noise, and the tire pressure should be adjusted within the standard value range when using the car daily (generally, if the tire pressure is too high, the tire crown will be seriously worn, the shock absorption and cushioning performance of the tire will decrease, and the tire noise will increase significantly.)

2. Abnormal tire wear causes abnormal noise, the crown of the tire is in contact with the ground and rubbing, if the crown is unevenly worn, there will be a buzzing sound.

3. The wheel bearing is damaged and abnormal, and the hub bearing will produce a buzzing sound after wearing, the main reason is that the wheel bearing is worn loose due to long-term use, and the wheel bearing can be protected by avoiding violent impact during daily use, and avoiding wading for a long time can play a protective role in the wheel bearing.

1.Fault Symptom: The car accelerates with a whining sound.

2.Cause of failure: 1. Exhaust part:

Sound caused by air leakage in the exhaust interface pad or air leakage through the exhaust pipe hole. 2. Engine chassis part: abnormal noise inside the engine or abnormal noise caused by accessories around the body of the warehouse, or abnormal noise caused by loose accessories or interference resonance of chassis parts.

3.Solution: 1. Check and replace the exhaust pipe gasket or exhaust pipe for the exhaust part. 2. For the chassis part, determine the corresponding damaged parts, and the general engine accessories and bearings are damaged more and replaced to solve.

The main reasons why a vehicle makes a whining sound when accelerating are as follows:

1. Tire pressure is too high will cause abnormal noise, every day the car should adjust the tire pressure within the standard value range (generally 2 3 bar 2 5 bar), if the tire pressure is too high will cause serious crown wear, tire shock absorption and cushioning performance decreases, tire noise increases significantly.

2. Abnormal tire wear causes abnormal noise, the tire crown part is in contact with the ground and rubs, and if the crown part is worn unevenly, it will make a buzzing sound.

3. The sound of wheel bearing damage is abnormal, and the hub bearing will produce a buzzing sound when it is worn, and the main reason for the wear caused by the loosening of the wheel bearing is the long-term use.

Key points of care:

1. Avoid overloading driving.

The loading capacity of the car during the break-in period should not exceed 75 of the rated load. New cars should be below the specified load capacity and passenger capacity, and should not be overloaded. Overloading increases the burden on the engine, transmission, transmission, suspension and other components, accelerating wear and tear.

Generally speaking, domestic cars cannot exceed 75 of the rated load, and imported cars cannot exceed 90 of the rated load. In addition, in order to reduce the load on the body and powertrain, a flat road surface should be chosen to avoid vibrations, collisions or emergency braking.

2. Don't drive at high speeds.

There is a speed limit during the test run of a new car. In general, domestic cars are at 40-70 km/h, while imported cars are at 100km/h. Ensure that the engine speed and speed work at medium speed, under normal circumstances, the engine speed should be 2000 4000rpm during the run-in; Avoid long-term operation, long-term operation during the run-in period, the continuous working time of the engine will increase, which is easy to cause wear and tear of parts.

3. Use high-grade gasoline.

The gasoline used in the run-in period of the new car should not be lower than the label specified by the manufacturer, and anti-wear oil flavor should not be added, so as not to run in insufficient mileage. In addition, the correct adjustment of the ignition system and the oil supply system can solve the changes in the vacuum economizer caused by the installation of the speed limiting plate, and improve the economy during the break-in period. In addition, proper driving also includes gently pressing the clutch and accelerator pedal when starting.

After starting, it should be run at low speed and the temperature should be raised to 50 60.

It must have been when you stepped on the accelerator and the accelerator was released.

Take a look at whether the exhaust pipe is loose, or go to the repair shop to test it, and check the specific problem.

Various possible causes of abnormal noise in the automobile chassis one. Disc brake squeak Features: When the vehicle is driving at low speed on a flat road, it makes an intermittent and irregular "rattling" sound at the wheel axle part, and the sound will be slightly aggravated when the speed increases, but there is no change when going uphill and downhill and turning.

If you hear the abnormal sound of "Zizi" in the process of driving, and this is the abnormal sound caused by the problem of the engine belt, because the abnormal sound of "Zizi" is mostly the aging of each belt group of the engine, or the belt is too loose caused by the problem of the tensioner, the friction abnormal sound, belt slippage, etc., if there is a similar "Zizi" abnormal sound, then look for the major belt groups and tensioners inside the engine, such as engine timing belt, generator belt, circulating water pump belt, air conditioning belt, power pump belt, etc. The problem that causes this abnormal noise is the abnormal sound of the engine belt, which is caused by the relatively smooth grinding of the joint macro surface of the belt and the pulley. It usually occurs when the engine speed changes rapidly, and sometimes the belt rings when the load of the attachment driven by the belt increases.

How to solve the problem of abnormal noise of engine belt.

1. Check whether the accessories driven by the belt are damaged, stuck, loose or the power of the accessories has increased.

2. Replace the belt, or use 100 gauze to polish the joint surface of the pulley and the belt (light grinding is fine).

3. The temporary solution can be to drop 1 2 drops of oil on the joint surface of the belt and the pulley (it will not affect the belt slippage).

If you want to judge that the belt is a good way is to drip oil on the belt, if the generator belt rings and the headlights are turned on more obviously, you have to take off the generator belt, turn the motor pulley, to see if the generator rotates smoothly, if the generator is normal, you can check whether the battery is not stored power, because the battery storage posture is not good will increase the load of the generator.

The reasons for the abnormal sound of automobile acceleration are as follows: 1. The abnormal noise caused by the looseness and deformation of the chassis parts. 2. The abnormal noise of the tire is screaming.

3. Abnormal noise of chassis parts, such as engine or internal parts of the transmission. 4. The abnormal noise of each transmission device, such as the front axle, the rear axle (according to the drive structure), and the connectors. 5. Abnormal noise of front and rear wheel bearings.

The solution to the abnormal sound of car acceleration: it is recommended that the special car be repaired, directly sent to the after-sales service for maintenance, and the problem is found to be sent to the after-sales maintenance is a must to protect the original and Lingzi factory parts, and the second is to guarantee the after-sales service, for the insured vehicle, it is also recommended to go directly to the after-sales maintenance, so that the safety is guaranteed. If it helps you, I hope you thank you.

The acceleration of the car may be due to the leakage of the exhaust pipe and the exhaust pipe trace Xiaozao interface pad. If there is an air leak, replace the interface pad directly. It could also be whether the lower air regulator is directly connected to the body.

The Posture Removal Fruit Air Adjustment Tube is directly connected to the body, causing resonance and whining sounds.

1. Abnormal noise only exists when it is running at idle speed or low speed. The reasons for the sound are: the gap between the piston and the cylinder wall is too large; The piston pin assembly is too tight, and the cavity or connecting rod bearing is too tight; The gap between the tappet and its guide hole is too large; The profile of the valve cam is worn; Sometimes, the starter grip comes loose and the pulley makes a sound (noticeable when the speed changes).

2. The sound is disordered when maintaining a certain speed, and a short sound is made successively when decelerating sharply. The reasons for the sound are: the camshaft timing gear is cracked or its fixing nut is loose; crankshaft breakage; The piston pin bushing is loose; The axial clearance of the camshaft is too large or its bushing is loose.

3. The abnormal sound appears when the engine accelerates sharply, and the sound still exists when maintaining high-speed operation. The reasons for the sound are: the connecting rod bearing is loose, the bearing is burned or the size does not match and rotates; loose crankshaft bearing or bearing burning capacity; The piston pin is broken; crankshaft breakage;

Regarding the introduction of resonance, due to space limitations, I will not go into detail here, and interested friends can go to the Internet to check the information on their own. 2. There is a problem with the suspension. For example, one of the screws on the suspension is loose.

If it is the cause of this aspect, it is necessary to investigate and determine where the problem is in order to fix the symptoms. 3. The gearbox is out of gear, to put it bluntly, the gear and the speed do not match. This situation is generally seen in models with manual transmissions, and models with automatic transmissions generally do not have this problem.

4. Engine knocking. The more common reason is that the fuel used is not of good quality. In order to save a little money, some car owners go to some irregular gas stations to refuel, and the reason why the gasoline at these gas stations is cheap is because the quality is not good, and a lot of gasoline is mixed with water.

There is also the case that the gasoline in the car has been stored for too long. For example, if you refill the oil once and it hasn't been used up for three months, it will be easy to knock out in this case. 5. If the weather is too cold, the plastic of the intake pipe will become hard.

In this case, there is also a situation of humming resonance. 6. Some models are a common problem.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can consult car problems at any time, 24 hours ** answer.

It is normal for the engine to hum when it is on the gas pedal. This is because the engine is increasing the power output, and the gasoline in the engine cylinder is burning to produce a dynamic and wide force, and the larger the throttle, the louder the engine sound will be, and the louder the exhaust sound will be, which is no problem. It's just that the big throttle consumes more fuel.

An engine is a machine that converts other forms of energy into mechanical energy, and a gasoline engine is a power unit that converts chemical energy into mechanical energy. The cooling system of the engine ensures that the engine works at the most suitable temperature by absorbing the heat of the parts, the cooling system can be divided into air cooling and water cooling according to the different cooling mediums, air cooling is to dissipate the heat of the parts in the engine directly into the atmosphere for cold cooling, water cooling is to transfer the heat to the cooling water, and then dissipate it into the atmosphere, the cooling effect of the water-cooled engine is better, and most of the engines are currently using the water cooler cooling system.

Hello, the reason for this is that there is carbon deposits in the cylinders, throttle valves, spark plugs, intake ducts, etc. The exhaust gas recirculation system does not work well, and the failure of the air flow meter, the absolute pressure sensor of the intake manifold, and the throttle position sensor can also cause the engine to accelerate weakly. There are many reasons for the failure of the engine to accelerate weakly, the first thing to check is whether the air filter is blocked, and the throttle valve is not properly adjusted and cannot be fully opened.

The fuel pressure is too low; Clogged or poorly atomized injectors. Failure of water temperature sensor, failure of air flow meter, wrong ignition or weak high-pressure spark, low compression force of engine cylinder, etc. The ignition system is mainly focused on the ignition ring and spark plugs, which are vulnerable parts, and the performance of the spark plugs is reduced or the use of inferior spark plugs can also lead to weak acceleration or acceleration shaking.

Hope this helps, hopefully!!

If the engine is out of oil, you can check if the oil is time to change. Hope.

The whining sound of a car engine accelerating is usually caused by several reasons:

1.Driveline issues: When there is a problem with a car's drivetrain, especially a transmission, wear and tear between its internal parts can lead to noise. These noises are often noticeable, whining or humming when the engine of the shut-off vehicle accelerates.

2.Belt or fan problems: The belt or fan assembly of a car's engine can become loose or worn, often causing the car to whine when the engine accelerates.

3.Air ingress problems: If you notice a whining or vibration when the engine is accelerating, it is likely that the air in the engine intake system is not getting into the air or the trachea or larynx components are out of balance.

4.Motor problems: Some cars use motors for power supply, which may cause the engine to whine when accelerating due to the impact of motor damage and high temperature.

The above reasons are just some of the common ones, if the car has a situation where the engine accelerates and whines, it is recommended to go to the repair shop in time for inspection and repair. Because problems with the engine of a car are very important for the safety of the driver and passengers, the risk of damage can be reduced and accidents can be avoided through inspection and repair.

Sound caused by air leakage in the exhaust interface pad or air leakage through the exhaust pipe hole. The exhaust manifold gasket is leaking.

On the issue of abnormal noise of automobiles, it is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are reasonable abnormal noises. When I went to the repair shop to detect abnormal noise, only nearly 20% of the cars really had problems. Differences between models equipped with turbocharged engines; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that because of their lack of understanding of mechanical knowledge, they mistake the abnormal noise of the reasonable front code for a vehicle failure.

Therefore, learn to distinguish the abnormal noise of the car and avoid wasting time and energy.

How to identify the sound of a car:

In practice, due to the limitations of working conditions, it is difficult to measure the sound of the car with special instruments, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, we must first distinguish between normal sound and abnormal noise. The normal vibration sound of each system component (such as the noise of the engine surface excavation), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.