Floating idle speed are quite a frequent phenomenon with which we had to face car owners. The main difficulty of eliminating this problem is not even in expensive and time-consuming repair, but that the reasons why idle turns are floating many and find the real cause of the fault is not so easy. In this article, we will consider the most common causes of floating nozzles and, thereby help you save time and nerves.

Floate the turnover of VAZ, the main reasons

1. The first thing to pay attention to with unstable idling turnover is a mass flow sensor.
2. The second cause of this malfunction is a speed sensor.
3. After that, it is necessary to examine the wiring of the speed sensor.
4. The cause of the crankshaft position sensor can be the cause of floating turns.
5. Then take a look at the throttle position sensor.
6. Pay attention to the wires and spark plugs.
7. Check the condition of the solenoid valve and the air filter.

It is worth noting that if the check of all the above nodes did not give a positive result, it is advisable to refer to professionals to detect and eliminate faults.

Sensor of the mass flow rate of VAZ2110, in order whether it should pay attention to

The stable operation of the motor depends on the optimal composition of the fuel mixture. The main task of the DMRV is to achieve the correct ratio of elements of the air-fuel mixture. If it is faulty, violations occur in the engine, problems with the launch of the motor and other trouble begin. With the help of a thermoemometer according to special DMRV algorithms, the amount of air passed into the cylinders.

There are several signs of DMRV breakdown:

1. There is a fuel reservoir.
2. The motor is poorly launched or does not start at all.
3. Significant deterioration in the dynamics.
4. Nice interruptions in the operation of the motor.
5. Spontaneous increase or decrease in floating idolotes.

To check DMRV follows:

1. Turn on the multimeter.
2. Then install the wires with the electrodes in the appropriate connectors.
3. We put a twentieth tension.
4. Next, we take two pins and put in the holes of the green and yellow Wirning DMRV.
5. Now they need to connect the electrodes of the multimeter.
6. Turn on the ignition and measure the voltage using a multimeter.
7. On the working DMRV, the indicator should be about 0.99-1.00.

VAZ2110 speed sensor, to pay attention to

Speed \u200b\u200bsensor transmits electrical pulses to the controller, which adjusts the operation of the engine at idle.

This sensor is located on the gearbox. The most common feature that he failed is idle problems. If the vehicle stalls at idle, it is necessary to check the speed sensor. Another sign of its malfunction is the problem with the work of the speedometer.

Often, the problem arises as a result of a chain break. Therefore, in the first place, it should be visually inspecting this sensor and its contacts. Traces of corrosion and dirt must be removed, clean the contacts and apply a lithol.

Check speed sensor is performed as follows:

1. We dismantle the speed sensor, define, for which the sensor terminals are responsible, and it also has a pulse signal, voltage, grounding.
2. We take a voltmeter and its incoming contact to a pulse signal, the second voltmeter contact ground to the metal part of the motor or vehicle body.
3. During speed sensor, the frequency and voltage in the voltmeter should increase.

Wiring Sensor Speed

When floating idle turns, it is necessary to check the integrity of the speed sensor wiring.

There should be no cracks, defects or various damage on the wiring. Otherwise, the wiring will have to be replaced.

Crankshaft position sensor VAZ2110

To check the crankshaft position sensor, it is necessary to arm a multimeter and a screwdriver. Then set the sensor to the position at which the most maximum value is 200 mV.

We connect the conclusions from the sensor to the multimeter. Now we have a screwdriver to the minimum distance from the crankshaft sensor core. At this point, voltage jumps should occur at the multimeter. If they are missing, then the sensor is faulty.

Throttle position sensor VAZ, in which it is, how to clean

Sensor malfunction indicators - floating idle turns, jerks when overclocking, deterioration of dynamics, sudden stops of the motor, flashing the signal lamp on the dashboard.

The most common cause of breakage of this sensor is to reduce the thickness of the base layer of the base at the site of the start of the slider. As a result, an increase in the output voltage of the output signal becomes impossible. In addition, a mobile core malfunction may cause a malfunction of the DPDC.

Ignition wires, spark plugs, in what condition they are

The most frequent malfunctions of high-voltage wires:

1. Contact problems with coil or spark plug.
2. Resistance above the norm.
3. Insulation disorder and, as a result, current leakage.
4. Conducting lived, which transmits the pulse, torn.

Indicators, which indicate the required replacement of spark plugs:

1. Unstable operation of the motor.
2. Bad motor launch.
3. Fuel reservoir.
4. Motor Troy.

Electromagnetic idling valve, its condition how to check

To check the solenoid valve, it is necessary to remove the power from it, turn on the ignition and connect to the power of the power wire valve.

At the same time you must hear a loud click. If the sound is missing, attach the wiring to the contact that is connected to the positive battery terminal. If there is no click again, the valve is faulty.

Air filter in which it is

The air filter is designed to purify air to form a combustible mixture in cylinders, and the more, the fuel combines more effectively.

If the air filter is contaminated, its bandwidth is reduced, which leads to problems with the motor motor.