Mazda3 idling unstable after overhaul and sometimes stalling

Causes of unstable car idling;

Throttle oil and throttle carbon deposits, dirty intakes, blocked intakes can cause idle pulling, throttle carbon deposits or oil are the most common causes of unstable idling.

Spark Plug Failure: Weak sparks caused by individual spark plug failures can also cause carbon deposits, which can be cleaned to restore spark plug activity, but some spark plugs have a fast lifespan and can reduce performance.

Blocked oil circuits: There are also oil circuit blockages and intake pipe failures represented by fuel injectors. When the oil circuit represented by the injector is blocked, the fuel supply pressure is insufficient, the fuel atomization is poor, the mixing ratio is unbalanced, and the combustion is incomplete, which leads to related failures.

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.

Solution; 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 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 factory 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 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.

Most of today's car engines are electronically controlled fuel-injected gasoline engines, and there are many reasons for idling and stalling

1. First of all, it is necessary to analyze the symptoms of idle flameout. If the engine will stall as soon as it enters idle operation, we call it "no idling", and the causes of this failure generally are: damage to the engine idle motor or the idle motor's wiring; 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 engine electronic control unit (ECU).

If the engine sometimes stalls at idle and it is normal again after restarting, we call it it.

Interstitial idle stall, this fault is very difficult to check, the cause is also very many, and various parts or circuits are not completely damaged, more headache is because the engine occasionally stalls and restarts and can return to normal, so even if the engine is idle due to the sensor, the engine electronic control unit will think that this phenomenon is not a fault, and will not be recorded by the engine electronic control unit, As a result, information about the fault cannot be obtained from the fault diagnosis system of the engine electronic control unit. The reasons for "intermittent idle stalling" generally include: 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's electronic control unit, etc., and if there is a problem with the quality of the gasoline, it can also cause this kind of failure.

The airbag light is flashing, usually the wiring harness plug under the seat is loose, the problem of idle jitter is very complicated, there are too many possibilities, the water temperature sensor may be damaged, the oxygen sensor is working poorly, the idle system is faulty, the air flow meter is faulty, in addition to the airbag, is there a fault light on.

Generally, the air joint door is too dirty, resulting in insufficient idle air intake.

Mazda323 idle is easy to stall, engine shake generally has several situations, gear start shake, cold start, three-way catalytic temperature is not enough, the engine carbon deposition is serious cause of car shaking, is the throttle is too dirty or the fuel injector is too much carbon, because the gasoline adsorbed on the carbon deposit after the car is sucked into the cylinder by the engine for combustion, and the combustible mixture of the engine is dilute and thick, resulting in idle jitter after cold start. Solution: Siyoupu cleans the oil circuit and checks whether the idle motor has carbon deposits and should be cleaned.

This is all a common problem, it must be blocked by carbon deposits, buy a bottle of Si Youpu first clear the door of the air, a bottle can almost do.

Hello! Generally, the first thing to do is to distinguish whether the idle speed is too low or the cylinder is missing.

If the idle speed is too low, you can clean the throttle.

If that doesn't work, you need to use a computer to check the data stream to see if there is any problem with the air intake.

If there is a lack of cylinder, it is necessary to overhaul the fuel injection system, ignition system, cylinder pressure, and timing!

Car questions, ask the car guru. 4S shop professional technician, 10 minutes to solve. 】

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Kiss <>

Hello, I'm glad to answer the reason for the unstable idling of the Mazda3 after changing the battery in 07: 1The battery judgment banquet is not firmly connected.

2.There is a problem with the engine control unit. 3.

The air flow meter is faulty. 4.The air filter is dirty.

The above is the reason for the unstable idling speed after the 07 Mazda3 battery replacement.

Kiss <>

Expansion of the family let: The idling of the car refers to a working condition. When the engine is idling, it is called idling, which means that the car is in neutral gear.

The rotational speed at which the engine is idling is known as the idle speed. The idle speed can be adjusted by adjusting the size of the damper. Idling means that the engine is not working.

Summary. Hello, dear, car master exclusive technician for your service, attentive, careful, concentrate on answering your car questions, for you to find the corresponding problem solutions and solutions, will provide you with a satisfactory answer! We hope you find this service helpful.

If it helps you, we look forward to your likes and attention. Wishing you a blessed Year of the Tiger and good luck

After the new idle motor is installed, the idle speed is unstable and the flameout is related to the following reasons.

The first is the quality problem of the idle motor, this is recommended to replace the original idle motor.

Second, install a new idle motor in the vehicle, if it is an original part, then this suggestion is to disconnect the battery cable, negative pole for 3 to 5 minutes, and then install it to try.

What happens when the new idle motor is installed with an unstable idle speed?

Hello, happy to answer your questions.

Hello, dear, car master exclusive technician for your service, attentive, careful, concentrate on answering your car questions, for you to find the corresponding problem solutions and solutions, will provide you with a satisfactory answer! We hope you find this service helpful. If it helps you, we look forward to your likes and attention.

After the new idle motor is installed, the idle speed is unstable, and the reasons related to the flameout are as follows: the quality of the first idle motor, this is recommended to replace the original idle motor Second, the vehicle is installed with a new idle motor, if it is the original accessories, then this Tong regret suggestion is to disconnect the battery line, negative pole for 3 to 5 minutes, and then install it to try the wide mountain.

The negative electrode wire is broken or stalled, the idle motor, it is new, not yet, my old idle motor is easy to use.

My old idle motor, just unstable at idling, but not stalling.

Summary. Pro-<>

I'm glad to answer for you, 03 Mazda six idle unstable car shake: the causes of idle unstable shake are as follows: the engine has serious carbon deposits, and the most common reason for car shake is that the throttle valve is too dirty or the fuel injector has too much carbon deposit.

Solution: Clean the oil circuit and check whether the idle motor has carbon deposits and should be cleaned; Ignition system problems, check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug flashing condition is not good, which will also lead to this kind of failure. Solution;

Check whether the spark plug has too much carbon deposit, replace the spark plug;

In 03, Mazda six idling unstable car shaking.

The '03 Mazda Six idles and shakes, panting unevenly but the power is normal.

My <> is happy to answer for you, 03 Mazda six idle unstable car shaking: the reasons for the unstable speed shaking of the idle belt are as follows: the carbon deposition of the motor is serious, and the most common reason for the car shaking is that the throttle is too dirty or the fuel injector is too much carbon.

Solution: Clean the oil circuit and check whether the idle motor has carbon deposits and should be cleaned; Ignition system problems, check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug jumping condition is not good, which will also lead to this kind of phenomenon. Solution;

Check whether the spark plug has too much carbon deposit, replace the spark plug;

If the oil pressure of the <> is unstable, if you have cleaned the engine carbon deposit, washed the throttle, changed the branch difference and swam through the oil pad and spark plug, etc., and still found that the body shakes 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 abnormal or the intake pressure sensor value is wrong and the work is poor, it will cause the body to shake. Solution: Check the oil pressure and replace the parts if necessary; The aging of engine parts and car shake is also related to the aging of engine feet (also known as claw pads).

The engine foot is actually the shock absorption system of the engine, the engine foot is responsible for absorbing the subtle shaking of the engine when it is running, if there is a problem with the engine foot, these vibrations will be transmitted to the Fang Meng pinning disc and driving in the noisy driving room, causing shaking when idling. Workaround: Replace the parts.

Summary. Dear, glad to answer for you! <>

The reason for the shaking of the Mazda VI idle unstable car in 03 is that the engine has serious carbon deposits, ignition system problems, unstable oil pressure and aging engine parts. When there is too much carbon deposit inside the engine, the gasoline adsorbed on the carbon deposit after the car is hit will be sucked into the cylinder by the vacuum suction of the engine for combustion, which will thicken the mixture, causing idle shaking after cold start

In 03, Mazda six idling unstable car shaking.

Dear, glad to answer for you! <>

In 03, the reason for the unstable idle car of Mazda6 was the serious carbon deposit of the engine, the problem of the ignition system, the unstable oil pressure and the aging of the engine parts, which caused the idle jitter. When there is too much carbon deposit inside the motor machine, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine after landing, and the mixture will become thicker and vertical, causing idle shaking after cold start

Kiss, give you an extension <>

Acceleration jitter is due to spark plug damage, incomplete combustion and leakage resistance of the mixture, acceleration jitter, carbon deposits of the engine, and throttle valves are to be cleaned regularly, if there is too much carbon deposit, caution will lead to frustration when the car accelerates, and it will also lead to insufficient power <>of the car