What is the reason for the unstable idle speed of the Vios, and what to do if the idle speed of the

What is the reason for the unstable idling speed of the car, up and down? 1: Ignition system failure causes the internal energy of the system to drop.

2: The intake manifold is leaking, and the speed of the car will be unstable. 3：

If there is too much carbon deposition on the throttle, the idle speed of the car will be unstable. 4: Fuel system failure causes the car to idle unsteadily.

Toyota Vios idle is too high, you need to clean the idle motor of the Toyota Vios engine, the idle speed of the Toyota Vios is too high because the idle motor of the Toyota Vios engine has too much sludge accumulation, cleaning the idle motor of the Toyota Vios engine can eliminate this problem, and the specific operation steps for cleaning the idle motor of the Toyota Vios engine are as follows:

1. Unplug the Toyota Vios idle motor.

2. Take down the entire idle motor of the Toyota Vios and prepare it for cleaning.

3. Spray the throttle cleaner along the round hole of the Toyota Vios idle motor.

4. Use a long-bristled brush to brush back and forth.

5. Install the Toyota Vios idle motor back in situ.

The reason why the idle speed of the car is too low is that the inlet channel is blocked, and there is carbon deposition in the throttle or oil removal, resulting in the phenomenon of unstable idle speed or even low idle speed, and the owner should clean the throttle and air intake tract of the car to avoid abnormal vehicle idling.

The reason for the low idle speed of the car is that the inlet is blocked, and there is carbon or oil in the throttle, which causes the phenomenon of unstable idle speed or even low idling.

With the extension of the use time, the phenomenon of carbon deposition will also occur, when the carbon deposition is serious, the spark plug spark on the individual cylinder is weak, which will affect the performance of the car, and the phenomenon of low vehicle idle speed occurs, it is recommended to clean or replace the spark plug in time. When the fuel injector of the car is blocked, the car will have fuel supply pressure, poor fuel atomization, resulting in unstable or low idle speed of the car, and when the car intake pipe fails, the mixture proportion is out of balance, which may make the emission exceed the standard, and the annual inspection of the car cannot be passed. When there is a problem with the relevant sensors of the car, the car does not have the correct air-fuel ratio, and the more common ones are the failure of the water temperature sensor, oxygen sensor, throttle position sensor, etc., resulting in high fuel consumption and low idle speed of the car.

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There are four major reasons for engine shake caused by Vios: 1. Ignition system problems, such as the failure of the ignition system of the car, will cause the ignition system to work poorly, and the spark plug flashing condition is not good, which will lead to unstable faults such as movement of the car when idling; 2. The aging or loosening of the foot glue is the rubber block between the engine and the frame. Its function is to reduce the vibration and cushioning of the engine during operation, and to fix the engine.

Once these feet are aged or loosened, the engine shake will become extremely severe; 3. Carbon deposition problems: carbon deposition includes cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition, etc., when the carbon deposition inside the engine is too much, the ignition energy, intake efficiency, and mixture ratio of the car will be affected, resulting in unstable power output of the car, and jitter will occur at idle speed and acceleration; 4. The fuel quality is too poor, and most of the domestic car owners have unstable faults such as "idling" and jitter, which has a great relationship with the quality of fuel. Poor fuel quality can impair engine performance and cause idle judder.

Summary. Dear, hello, when the vehicle starts, there are several reasons for the high idle speed.

First, the phenomenon caused by the dirty throttle valve of the vehicle engine? If it is an older model, you should also consider the idle motor, and it is recommended to clean the throttle and idle motor.

Second, this phenomenon is caused by the phenomenon of air leakage in the air intake system, and this is the key point to check whether there is a problem with the pipes and vacuum valves related to the air intake system?

Third, this phenomenon caused by a problem with the exhaust check valve of the vehicle engine needs to be checked in a key way.

What should I do if the idle speed is high when Vios is started?

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Hello. My car is a 06 Toyota Vios.

Hello, dear, the exclusive technician of the car master will serve you, attentively, carefully and attentively to answer your car questions, and will definitely provide you with satisfactory service! Hope mine can help you! Dear, hello, when the vehicle starts, the idle speed is high due to the following reasons: First, the phenomenon caused by the dirty throttle of the vehicle engine?

If it is an old model, you should also consider the idle motor, it is recommended to clean up the throttle and idle motor Second, the phenomenon caused by the phenomenon of air leakage in the intake system, this is the key to check whether there is a problem with the cavity dry pipeline and vacuum valve related to the intake system? Third, the phenomenon caused by the problem of the exhaust check valve of the vehicle engine needs to be checked by Wu Blind Hole.

It is how to deal with high idle speed.

Check if there is any air leakage in the old one? If it is determined that there is no problem, it is recommended to replace it with a new idle motor.

Air intake system failure: too much dirt on the throttle and intake tract or blocked air filter element, the cross-sectional area of the idle channel becomes smaller, the amount of air entering the cylinder is less than normal, the mixture becomes thicker, and the cylinder burns inadequately, causing the engine to shake.

The intake line or EGR valve leaks, the amount of air entering the cylinder is greater than normal, the mixture becomes thinner, and the power performance of the cylinder decreases. If the EGR valve is not closed tightly, some exhaust gases will enter the cylinder, the residual exhaust gas volume will be high, the combustion situation will deteriorate, and the engine will shake due to the decrease in engine dynamics.

Common points of failure are as follows:

1.Leakage from the intake manifold or various valves.

When the air intake of the engine is not right, the mixture will be too thick or too thin, so that the engine burns abnormally. This can cause the engine to shake at idle.

When the air leakage position affects the vacuum level of the engine, the engine will shake violently, which will have a greater impact on the idle speed of the cold car.

Common causes include: air leakage due to aging of the intake manifold pad, damage to the intake manifold or other parts grinding out of the intake manifold, vacuum tube plug falling off, ruptured exhaust gas recirculation (EGR) valve is not tightly closed, etc.

2.Excessive fouling of the throttle and intake.

The excessive carbon and dirt deposits in the throttle valve and the surrounding air intake, and the change in the cross-sectional area of the air channel, make the control unit unable to accurately control the idle air intake, resulting in the mixture being too thick or too thin, and making the combustion abnormal.

The common causes are: throttle carbon deposit, oil and carbon deposits in the intake tract around the throttle.

3.Idle air actuator failure.

Inaccurate idle air control due to a faulty idle air actuator.

Common causes are: throttle motor damage or card issuance, throttle valve plate due to carbon deposits causing jamming.

4.Inaccurate air intake.

The control unit receives the wrong air flow sensor signal and sends out the wrong command, which causes the engine idle air intake to be inaccurate, and the abnormal mixture concentration makes the engine burn abnormally, which is the indirect cause of idle instability.

Common causes are: air flow meter or its line failure; Failure of the inlet pressure sensor or its wiring; Caused by poor wiring harness contact of the engine control unit or failure of the engine control unilateral side itself.

There are four reasons for the engine shake caused by the vicky: 1. The ignition system of the car is rotten and fails, and there will be problems such as poor ignition system work and worsening of spark plug flashing, resulting in unstable faults such as car idling work. It is necessary to check the working condition of the spark plug, high-voltage wire and ignition coil, and find whether the spark plug has the problem of excessive carbon deposit, and it is recommended to clean or replace the spark plug in time.

2. The anchoring glue is aging or loose, and the anchoring glue is a rubber block spread between the engine and the frame. Its function is to reduce the vibration and cushioning of the engine when it is working, and to play a fixed role in the engine. If the rubber of these scaffolds is aged or loose, the vibration of the engine will be unusually large.

It is recommended to replace the foot glue again, the effect will be much weaker. 3. Carbon deposition. Carbon deposition includes cylinder carbon deposition, throttle carbon deposition, spark plug carbon deposition, intake carbon deposition, etc.

Excessive carbon accumulation in the engine will affect the ignition energy, air intake efficiency, and mixture ratio of the car, resulting in unstable power output and jitter in idle speed and acceleration. It is recommended to carry out the engine cleaning project in the 4S shop. 4. The fuel quality is too poor, and most domestic car owners have unstable faults such as "idling" bumps, which has a lot to do with fuel quality.

If the fuel quality is too poor, it will impair the performance of the engine and therefore cause problems with idle jitter. The solution is to clean the "throttle" on the car in time, which can basically eliminate various common faults. If it can't be solved, I can only send it to the 4S shop for repair.

The engine has serious carbon deposits, and the most common reason for car shake is that the throttle is too dirty or the fuel nozzle has too much carbon deposit. When there is too much carbon in the engine, the gasoline from the cold-start injectors will be absorbed by the carbon deposits. The causes of Vios engine shake are as follows:

1.The engine has a lot of carbon deposits, and the most common cause of car shake is that the throttle is too dirty or the injector has too much carbon deposit. When there is too much carbon deposited in the engine, the gasoline ejected from the cold-start injector is absorbed by the carbon deposit.

2.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine or cylinders of the engine are not working properly, which is manifested as:

The exhaust gas flow from the car is obviously intermittent, and the exhaust pipe shakes so badly that the engine shake can be clearly felt, sometimes accompanied by a sudden noise. This is mostly related to ignition coil failure; 3.The engine's flammable mixture is sometimes thin and sometimes thick, causing it to shake at idle after a 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 high work of the cold start. The engine's flammable mixture is sometimes thin and sometimes thick, causing idle shake and vibration after cold starts. 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.