The idling sensor is a car node that stabilizes the motor turnover in idling mode. Note that the idling regulator and the idling sensor is the same. At the same time, it is more correct to say the idling regulator (abbreviated RCX), since all car sensors are measuring equipment. If in the work of the RHX there are problems, you may have difficulty controlled by car. About this further in the article.

Idling sensor - design and purpose

As already mentioned, the idling sensor is a device that monitors the idle rotation of the motor. Thanks to him, the engine maintains optimal modes of operation, which increases the life of its components. In addition, in the cold time, idle turns warm the power unit to the operating temperature. Thus, RCH is playing a fairly important role in the engine of the car. By the way, it consists of only three components:

• Stepper electric motor.
• Spring.
• Rod, at the end of which there is a conical needle.

With a more detailed structure of this item, you can read the picture below:

Place of installation and principle of opening sensor

On the machines of the VAZ RXX family is located on the throttle node, or rather, on its body, near the mechanism of the position of the throttle. It is fastened with two screws. The essence of the work of the PCH is to open / closing the channel passing into the throttle bypass. When the motor works, the crankshaft rotation speed sensor reports the speed of the element rotation (often information is transmitted using special labels).

The controller, in turn, decides: Open or close the valve. It is guided by this one by different algorithms and calculations. Next, the XX sensor comes to the command that needs to be executed. So, by nulling a rod with a needle, a fuel supply to the motor is reduced or increased.

Signs of idle sensor malfunction

These symptoms can say about the faults of the RCX:

• "Swim" motor turns on XX.
• When warming the car, the engine turnover does not increase.
• Bad start of the power unit even when pressing a gas pedal.
• Sudden stopping of the engine on neutral gear.
• Falling the engine turns after powering on energy consumers: Magnitols, stoves, air conditioning or headlights.
  

Note that such signs can provoke other devices that are associated with fuel supply (for example, a fuel filter or candles). Therefore, before replacing the XX sensor, make diagnostics of the serviceability of a number of other important details. Only after making sure the RHX breakage can be processed to the sensor replacement.

Diagnosis of idling sensor, how to make diagnostics with your own hands?

To test the LCH, the mechanism itself find the mechanism itself and pull out a block with wires from it. If a 1.6-liter vazovsky motor is installed on your car, you first unscrew the two throttle components and shift it by 10 mm from the end of the receiver.

Then swipe the sensor circuit and see if the voltage is suitable for it. For this, an ordinary voltmeter is applied. To determine the voltage, connect the minus terminal to the mass and connect the conclusions "A" and "D" to the wire block (most often they are designated on the shoe). Next, turn on the ignition and see the voltmeter reading. If there are no signs of current supply at all, it means that the entire chain or the computer is faulty. If the voltage on the scale is less than 12 V, most likely, you have discharged AKB.

If a voltmeter shows a voltage of 12 V and more, we continue the experiment. Turn off the ignition and check the LCM itself. Tester terminals Connect to the conclusions A, B, C, D. General resistance should fluctuate in the range of 50-55 ohms. Then measure resistance in pairs. If the RHX is functioning normally, the device will show infinite resistance. If the sensor displays other readings, it is faulty and needs to be replaced. If the values \u200b\u200bcorrespond to the norm, most likely, the problem lies in the candles or other components of the car.

Tools, fixtures, consumables

When conducting work on the replacement of the RHX, you will need only two crusades, as well as a little musculoskeletal oil to lubricate the sealing ring.

How to replace idle sensor with your own hands (step by step)

Order of work:

1. First of all deraid the onboard system of the car, for which we remove the minus terminal from the battery.
2. Then disconnect the shock with the wires that go to the sensor from the throttle. To do this, press your finger to the plastic latch-retainer.
3. Now unscrew the two fastening bolts and remove the sensor from the nozzle. Sometimes there may be problems - a screw located near the receiver may fall out during the twisting. To avoid this, it is advisable to extract the left mounting mechanism first, and then unscrew the right.
   
4. Now you should pull the sensor slightly and unscrew the right screw. Such a sequence will allow you not to confuse fastening elements and significantly speed up the removal process.
5. When the old sensor is dismantled, set the new one. In general, the PCH installation is performed similarly to dismantling, only in the reverse order. Experts recommend that several droplets of the motor oil are recommended for the sealing ring.
   
6. The last stage is the Calibration of RXX. On domestic auto, this procedure is automated, so you only need to wear a minus terminal and turn on the ignition for a few seconds, then turn it off again. At this, the Calibration of the RXX is successfully completed. Vehicle is fully prepared for operation.

How can I restore the performance of the idling sensor (in detail)

Order of work:

• Remove the two throttle node fasteners and assign it to a side by 10 mm.
• Then disconnect the wire block from the LCH.
• We apply on a cotton wand WD-40 and carefully clean all the channels.
• Further, we unscrew the two bolts that fastening RXX. If there are no fasteners here, you have to remove the throttle knot.
• Now pull the mechanism itself. If there are oils and black mud on it, in addition to cleaning the RCH, you will need to clean the entire throttle.
• Then apply WD-40 on the cone needle with the spring.
  
• After cleaning, the device is dried and mounted in place.
• Before installing, check the distance from the device body to the needle - it should be 23 mm.

Tips Prof.

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