13 Magotan cars cold start idle speed will return to normal after a while, is it normal

The reasons for the severe shaking of the car are as follows:

1. Excessive carbon deposition in the throttle, fuel injector, and intake duct may lead to serious start-up shaking of the car.

2. There is too much carbon deposition inside the engine, and the gasoline sprayed by the starting fuel injection head will be absorbed by a large amount of carbon deposition, resulting in too thin the starting mixture, which makes the starting shake greatly.

3. Mechanical failures such as ignition coils, spark plugs, fuel injectors, etc., resulting in lack of cylinders; The oil pressure or cylinder pressure is low, resulting in insufficient power, etc., which causes the car to shake greatly when starting.

4. The oxidation or grade of the engine oil is low, mainly due to poor low-temperature fluidity, and the cold start protection of the engine is not in place, which makes the car shake badly when starting.

Specific solutions to idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and 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.

4. 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 beginning of 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 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 lead to no good fuel can 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.

Normal. Now many cars don't have a cool car and high idle speed.

Hello, Maitan.

Most of the current car engines are electronically controlled fuel-injected gasoline engines.

There are many reasons for stalling, and the first thing to do is to analyze the idle speed.

Symptoms of flameout.

1.If the engine will stall as soon as it enters idle operation, we dismantle Weichai and call it no idling, and the reasons for this failure generally are: engine idle motor or idle motor circuit damage; Leakage of the vacuum tube of the brake vacuum booster; Broken membrane of the brake vacuum booster; air leakage in the intake manifold; There is a problem with the idle control module in the ECU.

2.If the engine sometimes turns off at idle, and it is normal after restarting, we call it interstitial idle stalling, this fault is very difficult to check, and there are many reasons for it, and various parts or lines are not completely damaged, and the more headache is that the engine can be restarted after occasionally turning off and returning to normal, so even if the engine is idle and stalled due to the sensor, the engine electronic control unit will think that this phenomenon is not a fault, It will not be recorded by the engine ECU or so that information about the fault cannot be obtained from the fault diagnosis system of the engine ECU. The reasons for "intermittent idle stalling" are generally as follows:

The engine idle motor is stuck; The wire sheath of the idle motor is somewhat worn out; The idle air hole is too dirty; There is a problem with the engine throttle position sensor; There is a problem with the camshaft position sensor or the crankshaft position sensor; The engine speed sensor is faulty or too dirty; There is a problem with the idle speed control program in the engine electronic control unit, etc.

3.If there is a problem with the quality of the gasoline, it can also cause this failure.

Hope it helps!

There may be three reasons for the group of Magotan cold car starting, idling and stalling.

2. The air flowmeter has dirt, which causes the air signal to be incorrect, resulting in inaccurate air intake, resulting in inaccurate fuel injection, affecting the start of the vehicle, and finally causing idle stalling;

3. Improper idle speed adjustment causes the vehicle to stall, which may be caused by the blockage of the idle measuring hole and the idle oil channel.

There may be several reasons why the Magotan car idles off in cold weather:1Clogged air filter: A clogged air filter can cause insufficient air flow, which can affect the normal operation of the engine, which in turn can lead to idle stalling.

2.Fuel system problems: Fuel system problems may include oil pump failure, oil circuit blockage, fuel tank intake pipe blockage, etc., which will lead to insufficient fuel ** and affect the normal operation of the engine.

3.Ignition system problems: Ignition system problems may include aging spark plug gears, ignition line failures, etc., which can lead to poor ignition and affect the normal operation of the engine.

4.Air conditioning system problems: Air conditioning system problems can include compressor failure, insufficient refrigerant, etc., which can lead to an increased load on the engine and affect the normal operation of the engine.

It is recommended that you go to a regular car repair station for inspection and maintenance in time to ensure the safety and normal use of the vehicle.

Magotan cold car starts shaking and turns off the flame, what happens to the friends and ants The Magotan cold car starts shaking and stalls. First of all, the situation is that the temperature is low and the temperature inside the engine is not enough. Therefore, during the cold start, more fuel should be injected to meet the power requirements.

The larger the spark plug gap, the smaller the ignition energy. At low temperatures, the fuel atomizes poorly, and the fuel.

What are the causes of Magotan cold car starting jitter The causes of Magotan cold car starting jitter are low ignition energy, improper carbon deposit, and the mixing ratio of valves and air intakes. The first problem with the cold start of the car is the low temperature, the temperature in the engine is not enough, and the fuel and lubricating oil temperature are not enough.

Therefore, it should be sprayed on a cold start.

(1) Fault phenomenon FAW-Volkswagen Suteng car, mileage of 51000km.

The engine is difficult to start when it is cold, and the charging indicator light remains flashing even after the engine is running.

2) Cause of failure: Voltage regulator is damaged.

3) Fault diagnosis and troubleshooting: The charging indicator (warning light) flashes after the engine starts, indicating that the generator does not charge the battery (the generator can also charge the battery when the engine is started and idling in the Santana car); The difficulty of starting the cold car indicates that the battery is losing power.

There are generally two causes of faults.

The generator is not working well, resulting in too little power and insufficient voltage from the generator.

The voltage regulator is damaged, and the electricity from the generator cannot be charged to the battery.

A test lamp is connected in parallel between the armature "B+" binding post and the magnetic field "F" binding post of the generator (remove the generator magnetic field "F" binding post lead), and the engine runs at medium speed. When connected to a 12V battery, the test light does not turn on, indicating that the voltage regulator has been damaged.

Replace the voltage regulator manifold (or replace the generator assembly if the part is not available), troubleshooting. Voltage regulators are generally not easily damaged, but they can also be damaged in the long term under high current shocks.

This will cause the battery to lose power and gradually deteriorate.

1) There is too much accumulation in the cylinder, and most of the fuel injected when the car is cooled is adsorbed by carbon deposits, which will lead to difficulties in landing. If this is the case, the car should be able to land with a little refueling, and there will be no situation where it takes 3 hours and multiple starts to get on the car, so this possibility is ruled out.

2) Because the fuel injected into the cool car is more, the mixture is thick, and the ignition energy is higher, will the car be bad because the ignition energy is too low, such as the spark plug gap is too large. Checking that the spark strength is normal can rule out this possibility.

3) Faulty signals from individual sensors make it difficult to start the cool car, such as the crankshaft position sensor G28 and the coolant temperature sensor G62. Check G62, the resistance value is within the normal range; The waveform of G28 is measured, and it is normal.

The main cause of idle jitter;

1. The most common cause of vehicle shaking is that the throttle is too dirty or the fuel injector has too much carbon.

2. When the carbon deposition inside the engine is too much, the gasoline sprayed by the cold start fuel injector will be absorbed by the carbon deposition 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 deposition is saturated, it is easy to get on the car, 3. After the car, the gasoline adsorbed on the carbon deposition 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, resulting in idle shaking after cold start. The lower the temperature, the greater the amount of oil required for the cold start, and the more carbon deposits will affect the smooth cold start.

Severe idle vibration is generally caused by engine cylinder failure, aging or loose foot rubber, carbon deposits, fuel system failure, etc.

Solution; The best way is to clean the oil circuit, clean it regularly, and use PNF fuel additives to solve the above problems caused by carbon deposits. The fuel quality is not very good or the initial fuel of the new car is stored for too long, resulting in a rapid increase in the colloidal composition of the oil dispersion, which will continue to pollute the fresh fuel and cause no good fuel to participate in the combustion in the later stage, and the carbon deposition exceeds the standard. We can only gradually alleviate most of the problems by maintaining clean oil circuits.

Hello, dear, the car master will serve you, attentively, carefully and attentively answer for you, find the corresponding problem solution and solution for you, and will definitely provide you with a satisfactory answer! We hope you find this answer helpful. Hello, after the vehicle is coldly started, the idle speed is at 1200, which is normal, because the vehicle engine will have a related preheating process.

First, after the vehicle is started cold, the engine computer will control the vehicle, and the engine will run at high idle speed, in order to make the engine warm up faster. Second, under normal circumstances, generally after 1 to 2 minutes, the idle speed will return to normal, this is a free thing without any problems, it is a normal phenomenon, and you can open it with confidence.

The main reasons why the vehicle has shake at idle speed:

1.Serious engine carbon deposits: Cars always have the problem of carbon deposits, including cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc.

When the engine has too much carbon deposit, it will affect the ignition energy, air intake efficiency and air-fuel ratio of the car, resulting in the unstable power output of the car, and the phenomenon of idle speed and acceleration jitter will be foolish.

2.Unstable oil pressure: If you have cleaned the engine carbon deposits, cleaned the throttle, replaced the oil gasket and spark plug, etc.

And when idling, you still find that the body shakes, it is recommended that you go to the 4S shop to check whether the oil supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal, or the intake pressure sensor value is wrong, and the work is not good, it will cause the body to shake.

3.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine one or more cylinders are not working properly, which is generally manifested as:

The exhaust fumes coming out of the car are obviously intermittent, and the exhaust pipe shakes violently, and the engine shake can be clearly felt, sometimes accompanied by abnormal noises. This is mostly related to ignition coil failure.

4.Aging of engine parts: Shake in the car is also associated with the aging of the engine feet (also known as claw pads).

The engine foot is actually the shock absorber system of the engine. The engine feet are responsible for absorbing slight vibrations when the engine is running. If there is a problem with the engine base, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

Solution; The best way is to clean the oil circuit, clean it regularly, and use PNF fuel additives to solve the problems caused by carbon deposits. The fuel quality is not very good or the initial fuel of the new car 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 the combustion in the later stage, and the carbon deposition exceeds the standard. We can only gradually alleviate most of the problems by maintaining clean oil circuits.

Possible Cause Analysis:

1. The program ratio of the driving computer is not enough when it is cold started, you turn off the engine and pull out the key, and then start it again.

can be eliminated; 2. Often support the gear, or oil problems, the throttle is dirty, and it can disappear after cleaning the throttle;

When moving, power on for 3-5 seconds, let the fuel pump supply fuel first, let the oil pump and other pressures go up, let each sensor have a signal and then ignite.

2. If you park for more than 1 hour, it is best not to start and leave, and the car will not waste much fuel for 10-30 seconds.

3, especially after driving at high speed and then suddenly entering the service area, do not turn off the engine on the horse, open the door first to let everyone get off the car first, turn off the headlights at night, and then check the internal equipment of the vehicle, such as the glass is closed, and the lights are turned off, that is, the vehicle idles for 10-30 seconds and then turns off.

4. The ignition is very good after the self-inspection, but the ignition, the engine and gearbox are not well lubricated, and there will still be wear and tear when you go, so it is best to warm up the car in situ for 1-2 minutes.