Is it necessary to replace the idle motor and throttle assembly if the idle speed is unstable?

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This is not necessarily, you can go to the repair shop to check.

Unstable idling can be due to the following reasons:

1. The engine has serious carbon deposits.

When the carbon deposit inside the engine is too much, the gasoline sprayed out by the cold start fuel injection head will be absorbed by the carbon deposit 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 deposit is saturated, it is easy to get on the car, and the gasoline adsorbed on the carbon deposit after the car 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, causing idle shaking after cold start.

2. Excessive fouling of the throttle and inlet tract.

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.

3. The spark plug spark caused by individual spark plug failure is too weak.

Spark plugs can also build up carbon, which can be cleaned to restore spark plug activity, but some spark plugs are nearing the end of their useful life and their performance will be reduced. The spark plug spark on the individual cylinder is weak, which will affect the performance of the car, and the spark plug failure will cause the car to have the symptoms of "lack of fire", but the spark plug of the individual cylinder will have idle instability symptoms if there is a slight fault.

4. Fuel pressure failure.

If the oil pressure is too low, the atomization state of the fuel injected from the injector is poor or the fuel injected is linear, and only oil droplets are sprayed in serious cases, and the amount of fuel injected is reduced to make the mixture too thin; The oil pressure is too high, and the actual fuel injection volume increases, making the mixture too concentrated.

5. Failure of various parts.

Leakage of intake manifold or various valves, failure of fuel pressure, low oil pressure, failure of ignition system, etc., can also cause engine idling instability.

Hehe! Upstairs is right! Idling is the work of the engine without load!

The rpm while driving is not idling. The idle speed should not step on the accelerator, and the engine maintains its own working speed, and does not output power to the outside world.

To see what kind of specific model it is, if you have been in contact with Fiat before, the abnormal idle speed is related to the poor contact of the stepper motor socket due to loose contact caused by long-term use.

If it's idling, in addition to replacing the ones you mentioned, try cleaning the throttle as well.

1. You can break the cylinder test. Make sure that cylinder is not working well. Clean the injector head.

2Check the filter.

1. The idle switch is not closed.

Diagnosis method: Turn on the air conditioner and turn on the steering wheel when idling The engine speed does not rise, which can prove to be this fault.

Troubleshooting: Adjust, repair, or replace the throttle position sensor.

2. Idle control valve (ISC) failure.

Diagnostic method: Check the actuation sound of the idle control valve, if there is no actuation sound, the idle control valve is faulty.

Troubleshooting: Clean or change the idle control valve, and use a special decoder to set the idle speed basically.

3. Air leakage in the air intake pipeline.

Diagnostic Method: If you hear a snorting sound of a leak in the intake pipe, it is evidence of a leak in the air intake system.

Troubleshooting: Find leaks, reseal or replace phase parts.

Summary. Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, I hope this service can help you. After replacing the throttle, the idle speed is high, mainly considering the following reasons, the first aspect is mainly to consider the throttle installation problem, to see if there is a gasket leakage or installation is not in place after the installation of the throttle, fastening is not in place, resulting in part of the air does not enter the combustion chamber through the statistics of the air flow meter, resulting in too high idle speed, in the second case, it is necessary to consider the quality of the throttle itself or whether the throttle has been learned and matched.

Changed the throttle and the idle speed was high.

Hello, don't click to end, I'm textual to give you the full answer, 2-3 minutes.

Hello, I am your exclusive technician, attentive, careful, dedicated to answering your car questions, I hope this service can help you. After replacing the throttle, the idle speed is high, mainly considering the following reasons, the first aspect is mainly to consider the throttle installation problem, to see if there is a gasket leakage or installation is not in place after the installation of the throttle, fastening is not in place, resulting in part of the air does not enter the combustion chamber through the statistics of the air flow meter, resulting in too high idle speed, in the second case, it is necessary to consider the quality of the throttle itself or whether the throttle has been learned and matched.

You're talking about electricity, right?

My car is pulled wire.

If you are pulling cables, the main consideration is the installation problem.

The second thing to consider is to check the idle motor.

I just got a new one.

Consider the quality of the accessories.

It doesn't work to try it out in a few days.

OK. Will the idle speed be lowered on its own.

He has an adaptive adjustment for this.

yes. You can open it for a few days and try it.

If I can help you, please give me a thumbs up Thank you!

Ask about custom messages].

With the rapid development of electronic technology and automotive technology, the carburetor, which is the main part of the air supply for the engine, has been replaced by the current throttle valve (also called throttle valve). When the car has traveled hundreds of thousands of kilometers, it is often the peak period of throttle damage, and its fault phenomenon is that the engine idle speed is easy to stall, the idle speed is unstable, and the idle speed is too high. It is not like the carburetor of the past, which can be repaired casually, and in terms of its construction, it can only be replaced with the entire valve body if it is broken.

The main cause of throttle failure is damage to the idle motor (also known as the idle motor), the core component of the throttle. The function of the idle motor is to accept the output signal of the ECU and continuously change the idle position signal according to various idle conditions, so that the ECU can automatically correct the idle oil supply and ensure the stable idle speed of the engine. Once the idle motor signal is interrupted or the motor voltain is damaged, the throttle valve of the throttle valve body enters the mechanical emergency state through the emergency spring.

The current maintenance method is to replace the throttle valve. In fact, the most suburban way to repair the throttle is to replace the throttle motor, when the throttle is broken, as long as it is replaced with a new motor, it can work normally. This saves resources and reduces expenses.

The following is an example of how to replace the idle motor with the throttle valve of the Volkswagen series.

Judging by its appearance, it seems that it is impossible to take out the motor without destroying it. Actually, no, it would be easy for us to find a breakthrough in it. Prepare some corresponding tools, remove the rear cover bolt, take out the back cover, remove the two bolts of the throttle connecting the missing book line post, pull out the binding post a little, and erect it a little.

If you look closely, you will find that there is a small hole next to the binding post, which is actually the hole of the transition gear shaft positioning shaft between the throttle idle motor and the throttle idle front speed potentiometer. Now what to do is to use this small hole to punch out the gear shaft to facilitate the removal of the gear. Find a screwdriver with a relatively high hardness, polish it to the corresponding size, and punch out the gear shaft so that the intermediate gear can be taken down.

The next step was to remove the circuit board that covered the motor, but half of it was blocked by the throttle idle potentiometer gear, and it was not possible to remove it entirely. You can only cut it off at the position shown in the diagram, and then use a small screwdriver to gently pry up the circuit board along the edge gap above the idle motor. Hold the board open to the side.

Disassemble the screws of the positioning plate on the motor, take out the positioning plate, and the motor can be taken out. Do a cleaning job, prepare a new motor, and put it back in the reverse order when disassembled. At this point, our process is all over.

Based on the above example, it is actually not difficult to change to a throttle motor. However, in the whole operation process, it is necessary to be meticulous and serious, and can not be in a hurry, because the throttle valve is a relatively precise component, the throttle position sensor and the idle position sensor can not be collided by external forces, and the carbon film resistance inside the throttle can not be scratched a little. The most important point is not to reverse the polarity of the motor, otherwise it will be wasted.

Summary. Hello, Happy New Year, dear, the car master for your service, attentive, careful, attentive to answer 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 answer helpful.

Happy Chinese New Year and a prosperous Year of the Tiger

Hello, if the vehicle does not idle, then in this case, if the vehicle throttle is positioned with a separate speed motor, most of the idle motor is the problem.

First, in this case, it is recommended to clean the throttle and idle motor first.

Second, if the problem cannot be solved after cleaning, then it is recommended to replace the new idle motor to solve the problem, and the idle motor is recommended to replace the original parts.

There is no idle to change the throttle assembly or to change the idle motor.

Hello, I'm helping you sort out the answers to your questions, please wait a moment

Hello, Happy New Year, dear, the car master for your service, attentive, careful, attentive to answer 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 answer helpful. Happy Chinese New Year, Happy Year of the Tiger Hello, if the vehicle does not idle, then in this case, if the position of the vehicle throttle has a separate speed motor, most of them are the problem of the idle motor first, in this case, it is recommended to clean the throttle and idle motor first, if it is still not possible to solve the problem after cleaning, then it is recommended to replace the new idle motor can solve the problem, and the idle motor is recommended to replace the original accessories.

Summary. There are the following possible reasons for the high engine speed:1

Carbon deposits: Carbon deposits are deposits from incomplete combustion of fuel and lubricants. It is recommended to clean the air intake system every 20,000-40,000 kilometers without disassembly, that is, without disassembling the engine, use special equipment and special methods to clean the vehicle intake, valve, oil circuit and other parts that are easy to form carbon deposits.

2. The throttle valve you just said leaked, causing the engine to idle and the speed was high.

Is the high engine speed related to the throttle and idle motor?

I just changed the original clutch three-piece set today, and it is much easier to drive than before, but the engine speed is too high.

Did the mechanic help you check the vehicle when you went to change the clutch?

Checked. Let's just say that the original three-piece clutch set of the auxiliary factory does not match my car.

This is also possible.

However, the most common cause is engine spin due to a flat throttle, which can cause you to feel high rpm.

However, after changing the original factory, it is indeed much better to drive than before, and the feeling of driving before is the only bad thing is that the engine speed is high.

Is it the same as the previous speed and vehicle speed, is it related to a leaky throttle or an idle motor?

The high engine speed has the following possible hidden causes: 1Carbon deposits:

Carbon cooktops are deposits produced by incomplete combustion of fuel and lubricating oils. It is recommended to clean the air intake system every 20,000-40,000 kilometers without disassembly, that is, without disassembling the engine, use special equipment and special methods to clean the vehicle intake, valve, oil circuit and other parts that are easy to form carbon deposits. 2. It is the throttle leakage fluid you just said, which causes the engine to idle and the speed is high.

Generally, the throttle valve is more likely to break, and the idle motor is more durable.

Why don't you let them try to clean up the carbon deposits or check the throttle??<>

The carbon deposits were cleaned up a few days ago.

The throttle does not.

So how long has this throttle been in use?Throttle.

The throttle has not been replaced, but it was cleaned during the National Day last year.

Thinking about the time interval, I didn't clean the throttle.

If the throttle valve is still not cleaned and there is no problem to solve, it is possible to leak, if these have been overhauled and no problems are found, you have to consider the idle motor, because the idle motor is lower than its damage rate of other parts, so the last consideration is Oh [Happy Swim Preparation] so I recommend that you still check it.

Okay, thank you, master.

It won't be very expensive to change the throttle, but if you fix it, you can fix it, so it's comfortable to open, and you can feel better<>

Eat one and grow a wisdom.

The car is like this, and it's normal to have problems after a long time.

Hello dear, the electronic throttle valve is a key component on modern cars, and its main role is to control the engine air intake through electronic signals, so as to control the operation of the engine. If the electronic throttle idle motor is broken, the following manifestations will occur:

1.Unstable idling: The electronic throttle controls the air intake of the engine, and if the idle motor is broken, it may cause unstable idling, or even ups and downs.

2.Engine Shake: The electronic throttle controls the stability of the engine's air intake, and if the idle motor is broken, it may cause the engine to fail to maintain a stable running state, resulting in engine shake or vibration.

3.Lack of power during acceleration: The electronic throttle valve controls the amount of air intake into the engine, and if the idle motor fails, it can affect the engine's acceleration performance, resulting in a lack of power when accelerating.

If the above performance occurs, it is recommended to go to a regular car maintenance center for inspection and maintenance as soon as possible to ensure the normal operation and safety of the vehicle's positive sail.