Advice 1: How to clean the idle sensor

Blockage of the channel sensor idle speed is the cause of the reduction of free rod stroke sensor. And this, in turn, causes unstable idle speed, slow deceleration at sharp reset of gas, a sharp decline in revs when you turn on the air conditioning, slow revving engine. The solution is to clean the idle sensor.
How to clean the idle sensor
You will need
  • - screwdriver;
  • - spanners and Torx type;
  • - cleaning fluid for carburetors;
  • - lint-free cloth
Work spend on the car is shut with a cold engine. Remove the air duct connecting the air filter and the cover of the throttle. For this purpose, as a rule, loosen the two clamp. Remove the air duct completely, it does not interfere with further action. Disconnect the crankcase ventilation.
Remove the cover on the throttle. Most often it is also fastened with a clamp, but access to it is hampered. In addition, its mount can be made with the screws, access to which is also not free. Prepare a few screwdrivers of different lengths. For easier access, try to remove obstructing details.
Cleaning spend as accurately as possible. Spray liquid for cleaning carburetors on a closed throttle. Most aerosol cans with such a composition give a powerful jet and spray the mixture in different directions. So be careful and do not spill any extraneous details.
Wipe the valve, using a lint-free cloth. After that re-put on the choke and the walls of the chamber and wipe again. The operation is repeated until then, until you achieve the desired purity addressline space.
Slowly turning the Gaza strip open the flap. The open space will also clean the above-mentioned method. Here act more careful – the dirt in no case should not fall into the intake manifold. Make sure the damper is rotated gently and smoothly, and close tightly.
Disconnect the harness connector from the idle sensor. Key unscrewing the mounting screws, remove the idle sensor. Its the fasteners that usually contains a rubber o-ring of small size, which are easy to lose. In the open position of the valve seal the hole of the air channel with a cloth and clean all parts to Shine, not forgetting the seat of the regulator.
The same cleaner carburetors clean the sensor, being careful not to shift the random motion of its stock. In conclusion, clean the throttle body cover and install all removed parts. If cleaning the sensor has shifted it stock, drive it adjustment.

Advice 2: How to clean the IAC

If the car stalls on the move or immediately after starting of the engine, and the number of revolutions of the unstable idle speed varies from 700 to 2000 will help flushing controller idle move and install the oil separator.
How to clean the IAC
You will need
  • liquid for washing of carb
  • - lubrication "liquid key"
  • - hex wrench
With the suction port of the air manifold remove the two clamp. One clamp in the place where the body is connected with the air filter, the other at the junction of the housing with the air supply unit through the choke.
Then disconnect the pipe from contact sensors of the racesspeed and air temperature. Remove the valve cover pipe ventilation of crankcase gases. To identify this pipe can be in appearance: it is wider in diameter.
Disconnect with regulator idle speed contact. Then, after removing the intake tract, remove the regulator, which is mounted on a pair of M6 screws with internal hexagon.
From regulator idle speed loosen the solenoid, which is a control valve.
In the chamber, pour liquid to flush the carb. After a few minutes, drain and pour the liquid again. Repeat this process until until pour from the chambers the liquid is bright.
Take the solenoid and connect it to the pulse generator. Set the voltage of 12 V, a frequency of 1 Hz and turn on the power. Position the electromagnet vertically, pointing the hole upward.
At that time, as the core of the solenoid will move, spray it in the liquid for flushing the carb. Repeat the fill fluid multiple times through every 1 – 2 minutes.
After five minutes turn the electromagnet and allow to drain remaining liquid. Again repeat the operation for flushing the core, achieving thus its free movement.
Carefully blow out the solenoid and the controller with the help of the compressor. The inner side of both parts apply penetrating lubricant, use "Liquid wrench".
Connect the electromagnet with the valve block. With the battery feed several times the voltage at its contacts. The solenoid should trigger movement of the valve and a distinctive click. So you check the quality of the wash and health connections.
All parts assemble in the reverse order, then start the engine.
Don't forget before starting work on flushing the drain with the battery terminals!

Advice 3: What is the idle sensor

Proper and efficient operation of the automobile engine is possible only with the health of all constituent systems. For the smooth operation of a modern car equipped with various sensors and control subsystems. One of the elements needed to stabilize the engine speed is the idle sensor.
What is the idle sensor

Idle sensor is a device that is part of the control system of the vehicle and which serves to stabilize the idling speed. This device is an electric motor with a conical needle. Thanks to this sensor is the entering into the engine the amount of air required for stable idling. This happens due to the size change of the cross section of flow channel of air.

The volume of air passing through the controller, is read by the MAF sensor. After that, the controller monitors the flow of the fuel mixture in the engine of the vehicle using special fuel injectors. The system, which includes the idle sensor also automatically tracks the speed of the engine and takes into account the mode of its operation, increasing the flow of air to bypass the throttle or lowering it.

With the engine running, warmed to a certain temperature, the controller maintains the desired idle speed. In that case, if the engine is not properly warmed up, the idle sensor will increase the revs to warm the engine at high crankshaft speeds. In this mode you can start moving without waiting for complete engine warm-up.

Set the idle sensor on the throttle where it is secured by two screws. Sometimes the screws can be reamed heads or to be planted on the spray, making it difficult to dismantle the device for maintenance and repair. In such cases it is recommended not to touch the sensor fastener and remove the throttle fully.

Signs of a faulty sensor is the volatility of the idle dips or jumps when typing speed, stopping the engine, lowering revs under load switching. For Troubleshooting, disconnect the sensor connector with the ignition off, and then Unscrew the fasteners. After repair or replacement install the appliance in place, checking the distance between the flange and a tapered needle; it should not exceed 23 mm. To prevent oil seal ring with engine oil.

Advice 4: How to clean air conditioner in car

Many people prefer to clean automotive air conditioning service stations. However, this operation forces the ordinary motorist with the skills to work with automotive tools, chemicals.
How to clean air conditioner in car
The neglect of timely cleaning of a car air conditioner is fraught with sad consequences; in the first place, is premature wear of a number of parts, cost of replacement which is often comparable to the price of the device. In addition, contamination of the conditioning is accompanied by the accumulation of bacteria, harmful to human body.

Cleaning and conditioning aerosol foam means

Both methods are suitable for the cleaning of air conditioners installed in cars by the age of 3-5 years. The first method is to use aerosol products (best suited for prophylaxis, disinfection). You can apply special chemicals, such as, for example, Liqui Molly Klima Reiniger Analgen, Presto Klimaanalgen reiniger and other similar aerosols.

To clear the air, it is necessary to start the engine by turning on the recirculation; then withdraw fan, air conditioning at full capacity. Put the spray in front of the front passenger seat (where the air is taken for recirculation, close doors, Windows, activate the spray. You should wait as specified in the attached instructions time, to ventilate the interior. The foam cleaning method is used when a higher degree of pollution the car "cooler". For its realization it is necessary to remove the cabin filter and to fill the foam holes duct. Next, after waiting a specified in the user time to start up the engine, allowing him to work in different modes. In conclusion, you need to ventilate the interior.

Cleaning of the air conditioning means at hand

Often, producers are more cunning, selling to motorists for cleaning, which is composed of substances that standing, for example, in the pharmacy 10 times cheaper. This applies, primarily, to the digluconate of chlorhexidine (solution of 0.05%). It can be used in "single order", and it is possible to improve efficiency to mix with alcohol (1:1). Suitable Russian drug "Lysoformin 3000" used for disinfection of premises, combat mold; the desired concentration of 5% (50 ml per liter of water). Another chemical – "Chloramine B" used for disinfection of tableware, toys, medical products. To obtain the desired solution should be diluted in a liter of water one tablespoon of the product.

To implement the cleaning process, remove the cabin air filter. Into the holes using any sprayer (e.g., spray for color) pour the ready solution "liked" you chemical. Next you need to include the full power the fan with the air conditioning and open doors, Windows, covering weekend deflectors cloth, so that the solution is not settled in the cabin. In conclusion, it should be noted that to eliminate serious pollution would have to turn to professionals, because it requires removing the evaporator and refill the air conditioner with freon.

Advice 5: How to replace idle sensor

Idling the engine more than necessary the driver, especially while driving on city roads with lots of traffic lights and pedestrian crossings. The inability to not turn off the car during periods of short-term stops, greatly hinder movement. The disruption of the idle stroke may occur due to a malfunction of the special sensorresponsible for this function. In case of failure it must be quickly replaced.
How to replace idle sensor
You will need
  • sensor idle speed;
  • - Phillips screwdriver;
  • motor oil.
Set your machine on a flat surface. Put the car on the Parking brake. After all the preparations, open the hood and locate the idle air control speed. In most cars it is located on the throttle body (you can detect it by pressing pedal gas). Battery disconnect terminal with a negative charge, it will prevent a short in the power to the motor.
Remove the throttle unit, to simplify the change of sensor idle speed. The controller is attached with three bolts. They should remove the Phillips screwdriver to the side of the throttle node. Be careful, as some car models, one of the screws can simultaneously fasten the bracket for the harness. Then carefully remove the controller from the throttle.
Before installing new sensor , clean the air channel a throttle site, and the surface for installing the o-rings from contamination. Carefully inspect the gasket, if it cracks, scuffs or signs of wear, it must be replaced. Before installing the o-ring should be thoroughly lubricated with engine oil.
The throttle hole of the node, apply the o-ring. Until it stops then insert a new sensor idle speed. Now tighten the fixing screws. Don't forget to secure the wiring harness bracket. Screw in place of the throttle unit. Check the correctness and tightness of all sections of mount. Now put the terminal with a negative charge on the battery and try to start the engine.
A few minutes after starting the car the engine can run at a high speed compared to conventional indicators. However, after some time everything will work out. Thus the machine responds to the installation of a new idle sensor.
Useful advice
Before installing a new sensor will compare its size with the old one. Measure the distance between the connecting flange and the tip of the needle. The result should be the same on both controllers, otherwise the installation will fail.

Advice 6: Why is floating idle

When engines with electronic fuel injection occurs an extraordinary situation connected with the air suction, the possible occurrence of a sailing idle speed. This leads to the fact that the engine revs increase with the frequency of approximately 3 seconds. This situation occurs for different reasons. In diesel and gasoline engines causes sailing idle speed are somewhat different. In order to get out of this situation, it is necessary to clearly determine the cause.
Why is floating idle
Engines with electronic fuel injection, a control unit, it is the second name of the computer. It calculates the volume of air that enters the cylinders and opens, if necessary, at some time or other electromagnetic valves of injectors. If there is excess air, and the sensor throttle position indicates that it should not be, a temperature sensor, in turn, that the engine is already warmed up and it is necessary to reduce the fuel flow, the computer "go files" and he's just not able to determine what to do with excess air. All this leads to a violation of the automatic system of the engine. And besides the engine speed is gradually increased.To offset this situation, you should do the following. First, it is necessary to tighten the screw that adjusts the revs. The result of this action closes the opening through which air enters to work in this mode. If it came to nothing lead, it is necessary to pinch the rubber tube with pliers. This manipulation is also diagnostic. If in the process of compression of any tube motor operation is normal, then this tube it is best to separate. Then we need to figure out what the device leaves this tube and why it's breathable. Most often, it is a trigger device that supports the rpm or valve crankcase ventilation of the engine. If after all the tube bent single, the still floats, it is necessary to remove the air duct before the throttle body. Directly in front of the flap is a hole about 1 cm in diameter, and through it can flow the air to bypass the throttle valve.The reason for the passage of excess air may be the device forced increase the idle speed. In appearance it resembles a motor to which two or three wires. There are times when a valve is leaking air.Carbureted engines can get into a situation where the faulty one of the shelves, revealing the choke.Diesel engines the reason for the sailing idle speed usually becomes a sticking of the movable blades in the feed pump. Because of the rust formed due to the presence of water in fuel. It happens with cars, long idle with the engine off.Knowing the reason of which was the sailing idle speed, you can try to cope with the situation, if you have the relevant experience. But it is best to trust the equipment the professionals.

Advice 7: How to check absolute pressure sensor

Sensor the absolute pressure in the car complete with solenoid valve is used to control the depth of the vacuum in the intake pipe. The change in pressure relative to barometric is the result of changes made to the current engine load. The sequence of operations when checking the sensorand pressure depends on its specific type.
How to check absolute pressure sensor
You will need
  • - vacuum gauge;
  • - vacuum pump;
  • - tester (voltmeter);
  • - tachometer.
To test the sensor analog type, first connect the adapter to the vacuum hose between the intake manifold and the sensor. Connect a vacuum gauge.
Start the engine and let it idle. If the vacuum in the manifold is not too high, i.e. not more than 520 mm Hg. article, check the vacuum hose for kinks and damage and the correct installation of the camshaft belt. The reason for this low dilution may also be a defect in the diaphragm of the sensor.
Disconnect the vacuum gauge and connect instead the vacuum pump. Create by means of the pump to the sensor vacuum around 555-560 mm Hg. the article Then stop pumping the vacuum pump. A working gauge will show vacuum at least 25-30 seconds.
To test the sensor of absolute pressure type, use digital tester by switching it to a voltage measurement.
Turn on the ignition. Find the power contacts and ground. Connect the positive terminal of the voltmeter to the wire, which is connected to the signal terminal of the sensor pressure. A working device will show the voltage to ground of about 2.5 V.
Switch the device mode of the tachometer. Disconnect the vacuum hose from the sensor pressure. The positive terminal of the measuring device connect to the signal wire, and connect the negative to the ground wire of the sensor pressure. Normally, the device will show 4400-4850 rpm.
Connect to the hose sensor vacuum pump. Change the vacuum in the sensor pump, observe the device being in the mode of the tachometer. A symptom of health is the stability of the dilution and the readings.
Disconnect the vacuum pump. The device is in the mode of tachometer should show from 4400 to 4900 rpm If these values are not maintained, replace the sensor that is operating correctly.
Is the advice useful?