Despite the fact that the invention of the internal combustion engine falls on the middle of the 19th century, it is also among the most important and useful inventions of humanity. The appointment of such an aggregate knows each - bringing a wide variety of mechanisms, but terminology that is used to describe its work is not always fully understandable to drivers. For example, it is possible to consider such important concepts as a working and idling of the engine.

What is idle

Under the workflow of the engine, the process consisting in the transformation of thermal energy released during the combustion of fuel into mechanical work.

They judge the efficiency of the engine precisely according to the characteristics of the working stroke, in particular - the efficiency.

When the engine is running, completely different phenomena are observed on XX, namely, the transmission of the torque to the corresponding parts is missing.

The mode of operation without loads is used in different types of power plants, but most often this term is used when talking about internal combustion engines.

To ensure idle mode, used:

• special clutch, tearing the process of transferring torque to the primary shaft from the flywheel
• installing the handle of the gearbox in neutral position

In detail about what idle the engine speed of the car is looking at the video:

Idle mode when and why it is used

If we talk about the practical value of this mode, it is used in the case:

• if you want to warm up the system in a strong frost, it allows you to disperse the oil and eliminate the possibility of freezing
• if there is no way to turn off the motor.

In injection motors, the work created by the XX makes it possible to reduce to the minimum indicators the capacity of harmful gases in the exhaust.

Swim engine speeds like this happens

XX Auto involves maintaining the engine speed at the proper level, without failures. In this mode, if it proceeds without deviations, the tachometer arrow should smoothly descend from 2000 revolutions to 800.

In the presence of failures and faults, the number of revolutions can increase and decrease in chaotic order. The minimum for cars VAZ can be an indicator of 500 revolutions, maximum - 1500 rpm.

Often, such deviations are observed in vases equipped with an electronic pedal, E-gas expands the capabilities of the driver to control the car, but at the same time it often creates problems in terms of the need to eliminate problems arising from the unreliability and fragility of electronic equipment.

The search for the causes of which has occurred in idle mode may not be quite simple, but to leave this task of unresolved experienced drivers do not recommend - ultimately, more serious problems may arise, consisting in the full stop of the engine and the need for repair. Note, the cost will turn into a solid amount.

It makes sense to talk about the reasons for such a negative phenomenon as floating momentum in more detail, as the design of different types of engines causes a different set of these most reasons leading to the problems of the driver.

Read more about the unstable engine operation and reasons to eliminate - on video:

Why idle speed swims with carburetor engine (VAZ 2107, VAZ 2109) reasons how to eliminate

As an example, for consideration of idling failures, it is easiest to use carburetor engines of cars VAZ 2107 or VAZ 2109.

Among the most common causes of failures:

1. Incorrect adjustment of the turns of XX, it is possible - its shift towards the fuel and air mixture. To correct the situation, you will need to adjust the number of revolutions to an 800-900 per minute.
2. If the carburetor solenoid valve is broken, then the motor operation is possible only in the extended suction conditions, if the motor is removed, it stalls.
3. Pollution of the gibera or channel XX system, the situation will cause air mass deficit in the motor. To troubleshoot the problem, it will be necessary to clean the fatter from pollution.

A lot of problems can create a situation when an excess air is sucked into the carburetor system, as a result - we get a depletion of the mixture. Symptoms of this malfunction - the engine troit and stalls.

The reasons for phenomena may be the following:

• float Camera - understatement or overestimation of gasoline
• air filter clogging (need to be replaced)

Sometimes problems can cause intermittent injection, especially often it is observed on old carburetor cars in the cold season.

The following events will help get rid of the problem:

• checking the performance of the pump and its replacement if necessary
• replacing a clogged fuel filter
• cleaning Injection Nozzles, or Replacement
• checking the tightness of the fuel ramp
• diagnostics of wiring nozzles

Why are turns around the car with an injection engine (VAZ 2110-2115) reasons how to eliminate

The emergence of problems in injector engines of cars VAZ 2110-2115, equipped with an electronic injection system, can also be caused by a number of reasons.

The most frequent is the failure of the sensors. Attempts to read information ECU are unsuccessful, it negatively affects the operation of the power site, ultimately the momentum of idling becomes unstable.

As the causes of floating revolutions, it should also be noted:

• spark plugs of unsatisfactory quality, worn candles and contaminated
• air failure
• air seizure in the intake system outside
• defects in wiring
• breakdown of the idle regulator
• already mentioned problems with the EGR sensor

What actions should be taken when a malfunction is detected?

First of all, make sure that the regulator is in working condition. The location of the XX sensor is next to the sensor reporting on the position of the throttle. To check, you will need to use the multimeter.

In the event that the resistance indicator is out of the permissible range (from 40 to 80 ohms), most likely the reason lies in the PCX breakage. If the deviations are not detected, then you should go to the diagnosis of the mass flow sensor.

To check, you will need to disconnect the connector and turn on the engine. The turnover must be within 1500. Improving the dynamics in the course of the movement - proof of the malfunction of the DMRV sensor.

The EGR valve is designed to control the return of part of the gases back to the combustion chamber for its further complete incineration - such a procedure provides a significant decrease in harmful impurities in exhaust gases.

The malfunction of the EGR valve is usually associated with its contamination, eliminate the problem can be carried out preventive work on cleaning the valve seat.

Why are the speed of the car with a diesel engine, the reasons how to eliminate

For cars with a diesel engine, idle speed swimming is not such a rare problem. They manifest themselves with a periodic drop of revolutions while driving that occur without visible reasons.

In this case, in an inexperienced driver, in this case, it is better to contact the car service if there is a desire and the opportunity - you have to deal with yourself, in any case, it can be argued that it is impossible to leave the problem.

Most often, the instability of revolutions in motors equipped with electronic fuel injection, lies in the fact that the air into the cylinders is supplied unstable.

The operation of the engines of this type is fully controlled by on-board computers, while the automatic opening of the injector valve (but for a short period of time) occurs when the signal received from any of the indicators.

The problem is that in such a situation the system "believes" that the excess amount of air received the cylinders, the signals from other sensors report completely different information - about its lack of.

In such a situation, the computer is not able to independently make decisions on whether the valves should open. As a result, the "swimming" turns ranging from 800 to 1200 per minute. Those. The problem is in automatic system adjustment.

Floating electricity XX may occur due to corrosive phenomena on the blades in the power supply. Naturally, they begin to "eat" and cope with their functions worse. Follow with diesel fuel needed on proven gas stations, it protects from water to the fuel tank.

To troubleshoot the floating speed of the diesel engine, contact the specialized centers for the repair and maintenance of diesel engines.

Council Profi: The car owner must follow the idle of the engine

The negligence attitude to the state of its car, the late detection and elimination of the reasons that cause floating turnover XX will ultimately lead to a situation where the start-stop effect comes, i.e. The engine will start and immediately chop on the XX.

Therefore, it is important to observe the stability of the revolutions at idle and in case of faults, immediately take measures to eliminate them.

Recall once again that the location of the XX sensor is near the sensor controlling the position of the throttle. Check the XX sensor on the car with injection motor can be used with the tester.

Cause the appearance of floating revolutions can poor quality gasoline. You can eliminate the cause only by washing the entire fuel system and replacing the fuel filter to the new one.

Also, we should not forget that all systems, mechanisms and sensors have a certain resource and at any time may fail. Those. Control over their work must be carried out by the driver. Moreover, it's not difficult to cope with the search for such a malfunction, eliminate it on your own, i.e. Replace the replacement of a spoiled device to a new one - not at all difficult.

Some malfunctions, in particular - floating turnover of XX, can be observed due to the accumulation of errors in the ECU. To troubleshoot the problem, you need to connect to the car using the K-Line adapter, the ELM327 adapter and reset the error accumulated into the ECU using the OpendiaGFree program downloaded on the official website or using the OpendiaGmobile mobile version.

And still practical advice on the adjustment of idle speed:

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