Does Langdong s unstable idling have anything to do with the battery?

Summary. Engine noise can be roughly divided into engine noise during cold start, engine noise during rapid acceleration, and engine noise at idle. 1. Abnormal noise caused by aging or loosening of the machine foot pad.

The foot pad, also known as the chicken paw pad and the tripod, is generally installed in the middle of the engine and the body, connecting the body and the engine, and playing the role of fixing the engine. And its most important role is to play the effect of cushioning and shock absorption. Once the foot pads are old or loose, the engine shakes severely.

1. The engine is faulty, resulting in serious engine idle shaking, and there are many reasons for this situation; 2. If the spark plug is seriously ablated, the fuel nozzle of the injection source is blocked, the pressure of the gasoline pump is insufficient, and the throttle is too dirty; 3. There are also problems such as uneven cylinder pressure that will cause the engine to shake at idle.

The abnormal sound of the engine can be roughly divided into abnormal engine noise during cold start, abnormal engine noise during rapid acceleration, and abnormal engine noise at idle state. 1. Abnormal noise caused by aging or loosening of the machine foot pad. The foot pad, also known as the chicken paw pad and the tripod, is generally installed in the middle of the engine and the body, connecting the body and the engine, and playing the role of fixing the engine.

And its most important role is to play the effect of cushioning and shock absorption. Once the foot pads are old or loose, the engine shakes severely.

Sometimes there is a rattling of the engine.

The reasons for the abnormal noise of the engine are as follows:1This engine lacks cylinders. 2.The mixture is too thick.

This is usually because the mixture is too thick, resulting in this sound.

There is no jitter very severe.

Shake when idling and gradually reduce the beep after a hot car.

Do you change the engine oil on time and how often.

In this case, it is generally normal.

The fully synthetic engine oil is about 7 dry, and it is changed once or so.

5w to 30 you 7000 km or so, change it once?

Right. Then this crack is not a problem with the engine oil, yes, the mixture is too thick, which leads to the general situation of the coarse people, because the general fully synthetic engine oil, some basic stools are changed once a year or 10,000 kilometers.

Acceleration is good.

You just need to clean up the carbon deposits on the throttle.

If there is too much carbon deposit, it can be cleaned up if the phosphorus carbon deposit is caused.

Then you only have this sound when you start the cold car, right?

There are many reasons why the driver is unstable and prone to stalling, such as air intake system leakage, fuel pressure balance is too low, and air filter.

Clogging, injector atomization leakage, throttle.

Malfunction, spark plugs.

Poor work, malfunctioning air flow meter, etc.

When encountering this problem, it is necessary to use a fault detector to find out the root cause of the fault, and there is no detector that can only be checked one by one by using the elimination method.

What is the problem of unstable idling and direct shutdown of Langdong car, unstable idle direct shutdown is generally the problem of the car throttle, the throttle is too dirty, Song Huiwang, to be cleaned, there is a vacuum leakage, and there is a problem with the valve at the right time.

1. Failure of idle control valve. 2. Caused by poor atomization or blockage of the injector. 3. Caused by the change of oil viscosity and ear collapse.

4. Through the crankshaft position sensor, it is recommended that you go to your local 4S store for an inspection to confirm the cause of this phenomenon, and if there is a fault, it should be eliminated in time. <

1. Failure of idle control valve.

2. Caused by poor atomization or blockage of the injector.

3. Caused by changes in the viscosity of the engine oil.

4. Through the crankshaft position sensor, it is recommended that you go to your local 4S store to check to confirm the cause of this phenomenon.

Summary. Hello, if this is your case, consider the following reasonsCheck if the regulator is working properly2

Check that the supply voltage on the regulator is the same as the output voltage on the generator armature post. If the voltage is too low, the output voltage of the generator will be too high, and if the voltage is too low, a magnetic field relay can be installed to solve the problem.

Hyundai Langdong changed the battery + generator + voltage is still unstable.

When the car is moving, the voltage occasionally goes up and down, sometimes and so on.

Today I changed to a brand new generator and it was still the same The problem was not solved.

Hello, if you have this situation, the pants are the following, consider the following reasons Oh pro 1Check if the regulator is working properly2Check whether the power supply voltage on the regulator is the same as the output voltage on the armature post of the generator.

If the voltage is too low, the output voltage of the generator will be too high, and if the voltage is too low, a magnetic field relay can be installed to solve the problem.

The regulator was with the generator and was changed today.

Hello pro, add a magnetic field relay oh dear

How to increase.

How do I check to determine the cause?

Hello, this relay is added to the generator, the master of the car repair understands, and you can string it directly into it!

How do I check to determine the cause?The generators have been replaced with new ones

Hello, this situation is difficult not to check, because it is caused by the problem of the magnetic field.

Probably due to the disconnection of the idle contact, the ECU determines that the engine is under partial load, and the ECU determines the amount and time of injection based on the air flow sensor and the crankshaft position and speed signal. At this time, the engine is working under idle condition, and the air intake is small, resulting in an over-concentrated mixture and an increase in speed. When the ECU receives the signal that the mixture is too concentrated from the oxygen sensor, it reduces the amount of fuel injected and increases the opening of the idle control valve, which causes the mixture to be too dilute and the registration section is too thin, so that the speed decreases. When the ECU receives the signal that the mixture is too dilute from the oxygen sensor, it increases the amount of fuel injected and reduces the opening of the idle control valve.

Probably due to the disconnection of the idle contact, the ECU determines that the engine is under partial load, and the ECU determines the amount and time of fuel injection based on the air flow sensor, the position of the crankshaft, and the speed signal. At this time, the engine is working under idle conditions, and the air intake is less reputable, resulting in an over-concentrated mixture and an increase in speed. When the ECU receives the signal that the mixture is too concentrated from the oxygen sensor, it reduces the amount of fuel injected and increases the opening of the idle control valve, which causes the mixture to be too thin and reduces the speed. When the ECU receives the signal that the mixture is too dilute fed back by the oxygen sensor, it increases the amount of fuel injected and reduces the opening of the idle control valve, which causes the mixture to be too concentrated and the speed increases.

This repeats itself so that the engine idling is unstable. Turning on the air conditioner, turning the steering wheel, and turning on the lights at idle will increase the load on the engine, and in order to prevent the engine from stalling due to increased load, the ECU will increase the fuel supply to maintain the balanced operation of the engine. When the idle contact is disconnected, the ECU thinks that the engine is not in the idle condition, so the oil supply will not increase, so the speed does not increase.

Landlord, reasons: 1) Intake manifold or various valves leak when the air, gasoline vapor, and combustion exhaust gas that should not enter enter the intake manifold, causing the mixture to be too thick or too thin, so that the engine burns abnormally. When the leakage position only affects individual cylinders, the engine will shake more violently, which will have a greater impact on the idle speed of the cold car.

Common causes are: loose clamp of the intake rubber finger manifold or ruptured hose; Air leakage from the intake manifold gasket; Damage to the intake manifold or other parts to grind out of the intake manifold; Injector O-ring leakage; The plug of the vacuum tube falls off and cracks; The crankcase forced ventilation (PCV) valve has a large opening; The activated carbon tank valve is normally open; Exhaust gas recirculation (EGR) valve is not closed tightly, etc. (2) Excessive fouling of the throttle and inlet duct is too much carbon and dirt in the throttle and surrounding inlet tracts, and the cross-sectional area of the air passage changes, so that the control unit cannot accurately control the idle air intake, resulting in the mixture being too thick or too thin, and making the combustion abnormal.

Common causes are: oil or carbon deposits on the throttle; There is oil and carbon deposits in the air intake tract around the throttle; Idle stepper motors, duty cycle solenoid valves, and rotary solenoid valves have oil stains and carbon deposits. (3) Failure of idle air actuator, failure of idle air actuator, resulting in inaccurate idle air control.

Common causes are: throttle motor damage or card issuance; Idle stepper motors, duty cycle solenoid valves, rotary solenoid valves are damaged or hairpinned. (4) The inaccurate air intake control unit receives the wrong signal and sends out the wrong command, which causes the engine idle air intake to be inaccurate and makes the engine burn abnormally, which is the indirect cause of the idle instability.

Common causes are: air flow meter or its line failure; Inlet pressure sensing disruptor or its wiring fault; The plug of the engine control unit is in poor contact due to water ingress or internal computer failure.