What gives cheating lambda probe. Lambda Beachs - Probe: What you need to know

The number of cars on the planet increases every day. Increases in proportion and volume harmful substancesemitted by them into the atmosphere. Modern requirements for car environmentalities oblige their manufacturers to find solutions to reduce emissions toxicity.

One of these technological solutions is the improvement of the exhaust gas removal system through the use of a catalyst (catalytic neutralizer) - a device intended for neutralizing harmful compounds contained in car exhaust. However, when you fail this node, our car owners sometimes come to the "wild delight", learning how much it will be replaced. Then comes to the rescue of the semelter of domestic auto mechanics. They have long come up with an alternative to an expensive catalyst. Of course, it is not entirely environmentally friendly, but cheap.

In this article, we will look at what is a deception on the lambda probe, what kind of varieties there are, as well as how to make a similar device. But first let's figure it out how the catalytic neutralizer is arranged and what kind of principle it works.

Catalyst

The catalyst consists of a housing and a block carrier - a system of metal or ceramic lattices. On the lattices there is a thin layer of special chemicals, which, entering into the reaction with harmful compounds contained in the exhaust, neutralize them, turning the waste gases in water vapor, cut-iron and carbon dioxide. In the role of such substances, platinum, rhodium and palladium appear most often. This, in fact, explains why the catalytic neutralizer is so expensive.

Catalyst is the second element exhaust system After the receiving pipe, which removes the gases from the exhaust manifold of the engine. Its additional task is to cool the exhausts and the quenching of the burning vapors from the cylinders. By the way, due to the high temperature in the catalyst, after hurring exhaust gases. The oxygen supply required for this, regulates the car controller, receiving information about its concentration with oxygen sensors.

Oxygen sensors

Oxygen sensor (lambda probe) is a device designed to determine the amount of oxygen in exhaust gases. Its indications are taken into account by the electronic control unit when calculating the proportional ratio of fuel and air in a combustible mixture.

Most modern cars are equipped with two lambda probes. The first sensor is usually installed on the receiving pipe or in front of the catalyst. It is he who is responsible for the correction fuel mixes. The second lambda probe is mounted behind the catalyst and controls its operation. If suddenly the catalytic neutralizer failed and lost the ability to clean the exhaust, the sensor sends an alarm to the computer.

Signs of malfunction of the catalyst

Signs that the catalyst has failed, are:

• the appearance of the "Check Engine check" on the shield on the shield, which informs the error in the engine;
• noticeable decline dynamic characteristics car;
• unstable engine operation;
• changing the sound of a working motor;
• increased fuel consumption.

Why the catalyst fails

The catalyst, like any other device, has its own resource.

If your car has passed more than 200 thousand km without replacing it, and then he broke it naturally. But if the car is relatively new, and the catalyst ordered a long time to live, it may be a consequence:

Ways to eliminate malfunction

If you diagnosed a catalyst malfunction, there are two ways to eliminate it: buy and install a new catalytic neutralizer, which will be more correct, but expensive, or try to deceive the car controller, which is not entirely correct, but cheap. The second method implies the emulation of the catalyst, which can be carried out by:

• flashing electronic control unit;
• installation in the place of the second mechanical decking sensor;
• amendments to the electronic circuit of connecting the second sensor to the ECU.

All three options for workers. Which one to choose is to decide, of course, you.

Refracting ECU

This method is quite effective and is to connect a computer to the controller and make appropriate changes to its software. As a result of such a simple operation, the ECU will not refer to the sensor readings, counting the catalyst is completely worked. But such manipulations with software can end with a total failure, so this type of work is better to entrust specialists.

Mechanical destruction

Mechanical cheating on the lambda probe is the most popular way to eliminate problems with a catalyst, and rather simple. Its essence is to mislead the electronic control unit, but the oxygen sensor itself (lambda probe). Fooling restricts the flow of exhaust gases to its work element. Accordingly, the concentration of oxygen is increasing.

This is achieved by installing between the catalyst and the special spacer sensor (shutters). The second lambda probe is made further from the catalyst. What does it give? Fooling on the lambda probe has a narrow central hole (about 2 mm), passing through which exhaust gases lose concentration. The sensor, moved away from the catalyst, analyzes the amount of oxygen in the exhaust and, "taking everything for a clean coin", signals the controller that everything is in perfect order.

How does the mechanical cheating of the lambda probe make it yourself?

You can buy the described device today in any automata or on the market. But for a person who has skills in turning, make it a pair of trivia. Mechanical cheating on the lambda probe is made of bronze or heat-resistant steel. It is enough to sharpen a cylindrical disc, drill a hole in it and cut the corresponding thread: to screw the device into the catalyst body and screw the sensor into it. It is noteworthy that they are universal, that is, the lambda-probe is "Opel", for example, no different from the belling "Audi" or VAZ.

Installation of the device is also not particularly difficult. It is only necessary to unscrew the oxygen sensor, screw into the hole of the sleeve, and in it - the lambda probe.

Electronic variant

Now we will tell about how the electronic deception of the lambda probe is made with their own hands. Those who are friends with the soldering iron and distinguishes the condenser from the resistor, will not be difficult to emulate the operating catalyst electronic method. Schematic scheme Lambda-probe decens are very simple. It includes only two mentioned radio components: a non-polar capacitor for 1 μF and a resistor for 1 MΩ. In addition, we will need a soldering iron, rosin, solder and knife.

First you need to find the connector on the wires coming from the second sensor to the controller. It can be in a tunnel between the front seats, in the engine compartment or under the instrument panel, depending on the brand and car model. Keep in mind that the electronic deception of the second lambda probe is installed in front of the connector, from the sensor side.

Usually, the sensor is connected to the ECU to four wires: blue, white and two black. We do not touch the latter. The blue wire is cut, clean the resistor on 1 mΩ into the gap. To its end, from the controller, we solder one of the condenser's conclusions (no matter what, he is notolary). The second conclusion is soldered to the white wire.

At the end of the work and checking the performance of the emulator, all its details are better pouring epoxy resin to avoid closure or damage.

What to do with catalyst

Even if you got rid of the constant burning "errors", overpowering fuel and instability in the engine operation due to the emulation of the catalyst, do not forget that it is impossible to leave it in such a state. The melted or scored catalytic neutralizer will necessarily interfere with the removal of spent gases, creating serious resistance to them. This will naturally affect the engine.

What to do? There are two solutions: to remove the catalyst, delete (knock out) from it a block carrier and install back, or to purchase and put a stronger on its place (plane sensor). In the first case, you will not spend a penny, but the sound of the engine of the engine will significantly increase. If you put a plane sensor, the sound will increase slightly, and its design will additionally allow the exhaust gases before they fall into the muffler.

Hard environmental control causes automakers to do everything possible to comply with the euro standards controlling the composition and exhaust structure. Overwhelming majority modern models Complete lambda probe ( alternative names - oxygen controller, oxygen sensor, O2 sensor). Its appointment is to control the exhaust content by analyzing the content of oxygen in it. Owners of cars that are not equipped with such a controlling exhaust system (usually outdated or very budget), in this regard is lucky. In any case, part of the problems associated with the malfunction of the exhaust system, it disappears for them.

Meanwhile, such faults happen, and not so rarely. Violation of the normal operation of the lambda probe leads to problems with the exchange of information between the oxygen sensor and the ECU, which perceives it as a serious malfunction, signaling the "Check Engine" indicator. To circumvent this situation without replacing the oxygen controller for a good one (the value of which is large enough), using the so-called lambda probe decendment. This will allow the onboard controller to switch from emergency to standard mode.

What is the lambda zone cheating

In general, the lambda probe is a really useful device that allows you to significantly reduce the harmfulness of the exhaust (in accordance with the hard standards of Euro-4/5), at the same time reducing the fuel consumption.

Structurally, such a device is two oxygen sensors, between which the catalytic conversion is installed. The latter is responsible for the transformation of harmful components of exhaust gases in harmless, the task of O2 sensors is to control the oxygen level in the exhaust and report this to the onboard computer, which, based on the data obtained, increases or reduces the fuel supply to the cylinders.

Two sensors are needed in order to compare the results of the analysis, and if they do not match, the ECU will take it like a malfunction of the lambda probe. The consequences of such a situation are not very optimistic:

• on-board computer immediately translates functioning power aggregate in emergency mode, assuming the use of hard presets by fuel cards, the testimony of the O2 sensors is completely ignored;
• the "Check Engine" indicator is on constantly, which significantly worsens the possibility of diagnosing other car systems, that is, if you have any other faults, you will simply not be noticed;
• in the combustion chamber, the enriched mixture begins to be supplied, which will increase the consumption of fuel to a tangible value;
• due to too enriched fuel of the air mixture, education increases, the power of the motor is reduced, and motor oil Contaminated by a shock pace.

The prevention of such a situation is for what a lambda-probe is needed.

Of course, there is a standard way to solve the problem - replacement of the neutralizer to a good one. It is he who is recommended by all automakers without exception. However, the cost of a complete set (catalyst together with two sensors) is very high. For example, for some VAZ models, it can be 50-60 thousand rubles, the situation with foreign cars is more pessimistic. Plus, you need to add the cost of work, and it may turn out to be unversion for many. That is why a significant part of drivers in the event of such a problem are solved to resort to an alternative option.

Consider how the lambda probe is drilling. The principle of operation of the emulator consists in such a change in the testimony of oxygen sensors, which would be perceived by the ECU as normal. In this case, the power unit will continue to work in normal mode, and all the consequences described above will be avoided. Of course, the neutralizer will not work at the same time, that is, probably the exhaust of your car will not fit into the ecological norms of the euro. Well, for many it is a completely acceptable victim. For the reason that the lambda probe is deceived, this step is solved if not most of the car owners, then a sufficiently weighty part of them. Especially if you consider that the cost of such a way to solve an order of magnitude less, and the installation of an oxygen sensor emulator is quite simple and can be performed independently, without the need to use master services on the side.

How to independently make and install a lambda probe

The reasons for the occurrence of a bunch of a neutralizer - oxygen sensors have a lot. Manufacturers themselves are recommended every 25-30 thousand kilometers to clean the lambda probes, because over time they clog and cease to adequately measure the amount of oxygen in the exhaust.

Do not forget about the catalytic neutralizer, representing a rather complicated technical device. In this case, the breakdown of any of these components in most cases leads to the need to purchase a new device, since their maintainability is very low (for sure the manufacturers themselves took care).

Disabling one of the sensors does not solve the problem, since in this case increased flow fuel can not be avoided, with the power unit will not be able to please you for the same stable work. Especially a lot of trouble will arise in idle mode.

So the study of information, how to handle the lambda probe, is a response of auto owners on the likelihood of parting with a decent amount of money, which will probably not be superfluous. Currently there are three various methodsallowing to fool a lambda probe:

1. installation of a metal sleeve (the so-called mechanical method);
2. use of a special electronic circuit;
3. refracting ECU.

These methods have nothing to do with each other because they use completely different mechanisms for bypassing existing restrictions. They are united by a low cost and the possibility of independent implementation.

Consider the advantages and disadvantages of each of the above methods.

Mechanical destruction

The principle of the catalytic neutralizer is quite simple. It represents the usual terminal silencer, the inner ceramic cells of which are covered with a thin layer of spraying from precious metals (platinum, rhodium and palladium). Exhaust gases passing through the catalyst, contact with the sprayer, entering into the reaction. At the same time, the remains of unburned hydrocarbons are oxidized, turning into ordinary water, carbon monoxide - in less harmful carbon dioxide, nitrogen oxide - in atomic nitrogen, constituting most of the earth's atmosphere.

But since the CN is forced to work in conditions of very high temperatures, its resource is limited. And if refueling with poor-quality flammable, it fails even faster. So from an operating point of view, the catalyst can be called consumable material. But with financial, even the language does not turn to apply a similar term. Therefore, at the exit of the catalyst or oxygen sensor sensors, car owners prefer to install a mechanical or electronic lambda-probe emulator and replacing the KN on the plane arrester.

If you simply remove the DK or KN, the onboard computer will immediately respond to such an intervention by sunbathing indicator Check. Engine and translating motor into emergency operation.

The use of mechanical deception is the easiest and most affordable way to independently perform the work allowing the computer to work in normal mode.

Such a deception of lambda probe looks like a sleeve, which has a hole of a small diameter on one side, and on the other hand, the thread for connecting standard sensor. The principle of operation of such a device is that the gas jet, falling into a small hole, covers the lambda-probe only partially, therefore it is not able to determine the accurate composition of the exhaust and transfers to the controller low averaged values.

Factory sleeves can be equipped with a spraying of ceramic crumb, including a layer of catalytic coating. In other words, such a device is a reduced copy of the real catalyst, contributing to also cleaning the exhaust at the appropriate level. Note that the cost of such a deception for obvious reasons is above simple, without a catalyst layer.

The latter can be made independently, on the usual turning machine. However, the cost of the finished product is relatively small - about 400 rubles with linear dimensions of about 40-100 millimeters. Options with a catalytic layer are more expensive - from 1 thousand rubles, while the dimensions of such a lambda-probe flavor is even less (30-40 mm).

The algorithm for the installation of mechanical decking is simple:

• we install cars on the lifting / pit / lifting;
• remove the minus terminal of the auto accumulator;
• we dismantle the kotroller;
• install on the lambda probe, the sleeve shoe;
• mount the upgraded device to the regular place;
• connect the battery;

After some pause, the check engine will stop burning, that is, we achieved our goal and the power unit continues to function in normal mode.

Despite the low cost and ease of installation, this method has disadvantages. First, its installation is possible not on all models - some cars due to constructive features The release systems do not have the place to install the sleeve, despite its small length.

Secondly, the ECU will be deceived only on cars equipped with engines, which correspond to the Euro-4 standard. The later versions are a great chance that Check Engine will not go out, and the motor will work in unfavorable emergency mode.

Electronic destruction

Although the appointment of the deck of electronic type is the same - imitation of the normal operation of the catalyst, here is used in a completely different principle. This is an electrical circuit collected from components that change the signal in the right way referred to the ECU allegedly from oxygen sensors. This information causes the on-board computer to still believe that the catalytic neutralizer is present in its place, that is, the release systems operate in normal mode.

Most often at home, 4-coal lambda probes are made, equipped with electric heating. The presence of the heating element is the condition required, since the catalyst functions exclusively in high-temperature mode (at least 360 ° C). When starting a cold engine to prevent triggering, a pre-warming of the O2 sensor is required.

The power of the electric heater controls the computer, while it does not matter the polarity of connecting its contacts (most often to the thermoelement lead wires white) ..

Using electronic tricks Lambda probe The electric heater is activated in the scheme without changes. Only signal contact is subjected to upgrades. The most primitive diagram of the lambda probe flavors consists of only two components:

• condenser for 1 μF;
• resistor with a par value of about 1 MΩ.

The capacitor is included in the diagram on the site between the signal contact and the contact, closed on the ground. The resistor is embedded in the rupture of the control (signal) wire.

Note that the above denominations are approximate. Their concrete value may differ in one direction or another, which is determined by the characteristics of the engine and the computer.

We describe the procedure for making and installing the electronic decelement of the above type on the example of Opel Zafira:

• we will need a pair of resistor / capacitor with valued rates;
• we are looking for a block that is responsible for connecting the oxygen sensor, disconnect the plug;
• we clean the ends of the wires from isolation;
• break the chain by cutting in an arbitrary location;
• build a resistor (pre-twisting with mandatory subsequent soldering);
• in the same way embed the capacitor in the chain. One end goes to the ground, the second we solder to the wire directly in front of the resistor (preferably as close to the plug);
• all positioned connections are deliberately insulated, connect the plug and check the work of the bullshop on the running motor (before you need to reset the ECU errors).

Note that the electronic imitator of the lambda probe does not always lead to the desired result. In some cases, at first the on-board computer is working fine, but then the error occurs again. The problem is solved by flashing the ECU. The task is based - to find the correct version of the software, because it is simply not laid out on the network.

Scope of use of electronic bellows - installation on cars on which the catalyst for one or another reasons is removed, as well as on machines with a HBO installed. You can find more perfect and complex schemes that imitate the work of the regular sensor are more believable. However, such emulators can also be purchased in the retail network. The factory detects of electronic type use a timer assembled on the basis of the NE555 chip.

The reason for the installation of the emulator on cars, which passed on the use of compressed gas, is that in this case the composition of the fuel-air mixture (or rather, its physico-chemical characteristics) changes significantly. The content of toxic substances is increased, which is fixed by the regular lambda probe with all the resulting details.

The procedure for installing an electronic emulator in this case is slightly different, as is its composition.

Consider such a deception using the example of the Zond-4 factory device. It is equipped with LED alarm, which informs about the current state of the fuel and air mixture:

• if the green light is burning, it means a depleted mixture;
• the burning of the yellow LED indicates that the ratio of fuel and air is within the normal range;
• about the enriched mix indicates a red light bulb.

This information is needed because a modified signal is sent to the computer that is not related to the real one.

The deception itself is usually installed in, connecting to the automotive electrical system by means of 4 wires:

• the blue wire goes to a positive terminal of the electric valve of gas-charming equipment;
• the wire of the black color is grounded for a common mass;
• after cutting the CD signal wire, the yellow wire is cling to the lambda-probe tap;
• white connect with the end of the cut wire that goes to the on-board computer.

As in the previous case, all contacts reliably peck and insulated.

Normally, when working on a gasoline, the flavor indicator should not be buried, with any of the three light bulbs, informing the driver about the quality of fuel assembly when switching to gas.

Since the classical CN scheme involves the use of two oxygen sensors, to deceive the second of them, located at the output of the catalyst, a slightly changed scheme is used, in which the 1N4148 diode is present instead of the resistor.

The emulator is set as follows (an example is given for Mazda 323, equipped with a two-liter gasoline power unit):

• tearing the chain of the signal wire KZh (black);
• the anode contact of the diode connect with the end of the cut-off wire, which goes to the oxygen sensor;
• cathode contact with another end, going to the ECU;
• this is also built on the withdrawal of a non-polar capacitor with a par value of 4.7 μF;
• the second condensing condenser goes to the ground;
• wires peck and insulated.

Such a deception allows us to normalize the operation of the on-board computer, but provided that the lambda probe itself is present.

To make sure the performance of O2 sensors, you must have a multimeter. In this case, the verification procedure is carried out according to the following algorithm:

• the multimeter is translated into the measurement mode of a constant voltage, setting up the upper limit at the 20V mark;
• the red contact of the probe of the measuring instrument is connected to the lambda probe connector. Leading to the ECU;
• black contact is thrown on the ground;
• immediately after the start of the motor, we are convinced that the instrument readings are in the range of 0.45-0.55V;
• after heating the power unit, the indications of the multimeter should be dynamically changed from 0.1V to 0.9V, which indicates a good condition of the sensor.

Note that such an inspection actually testifies only that the sensor is operational, but whether it is necessary, whether its testimony is truthful, in this way we will not know.

Refracting ECU

This method to overcome the first lambda probe can be called simultaneously the easiest, and at the same time requiring great caution. The fact is that the fill in the memory of the device of the modified control program really allows you to solve the problem in a charter when the signals coming from the second oxygen sensor are simply ignored. Only information comes from the lambda probe installed before the catalytic neutralizer is taken into account. The data is modified in such a way as if the composition of the exhaust corresponds to the norm.

However, any error (both with the choice of firmware version and at the stage of its fill) is fraught with the fact that restore the onboard computer settings that worked before the start of your actions will not be possible.

You can, of course, try to find the original firmware, but it is a very difficult task, and it is worth it very expensive. In addition, after installing it, you will receive the original factory settings that worked immediately after purchasing the machine, and not those that worked at the time of flashing.

To avoid such troubles, such work should be entrusted to a qualified specialist, having sufficient experience with the ECU of your car model.

The consequences of the installation of lambda probe emulators

Immediately let's say: the desire to save in most cases is turned into a variety of other unpleasant consequences. This statement is true and in relation to the installation of lambda probe decens, and regardless of their type.

Surely those who produced this operation come across one or a combination of the following consequences:

• since the ECU does not receive real data on the composition of the fuel and air mixture, it is not able to effectively control the injection, and this will sooner or later end the deterioration in the efficiency of the power unit and other unpleasant problems;
• any assembly error electrical circuit Flacks or its connection can turn into a better damage to the wiring, and at worst - the failure of the ECU;
• in the process of installing a mechanical type decking, you may accidentally damage the lambda probe, and the emulator itself will not allow you to detect this malfunction;
• regardless of the type of lambda probe simulator, the installation of the device can lead to the failures of the onboard computer.

In other words, allowing the slightest inaccuracy, you risk not only not to get rid of cHECK problems Engine, but also aggravate the situation, that is, lead to even more financial costs than if you solved the problem with a legal way, producing a change in the faulty element of the exhaust system to a new one.

When car owners decide to remove the closed catalyst, the question of installing the decks on the lambda probe is invariably.
Lambda probe is a sensor, as a rule, before and after the catalyst and showing the amount of oxygen in the engine exhaust gases. Works for high temperatures, Therefore, it is equipped with an electric heating element. Also in its composition there is an electrolyte reacting to oxygen in the gas mixture.

Lambda Probe Installation Places

Based on the testimony of this sensor, the ECU controls the fuel injection (if a lot of oxygen increases, if it reduces little). It follows from this that the lambda probe is suitable for engines with electronic fuel injection.

When the sensor fails on the dashboard will burn "Check Engine", so they put the decks on the second lambda probe.

Car designs are different. One lambda probe sensor is provided on the other two. In the first case, the sensor will signal an error if it is broken or the data is not read correctly. And in the second to these malfunctions will be added.
In any case, the sensor malfunctions will go to dashboard With the mark "Check Engine" (the same will be, if you turn off the lambda probe). And in the worst cases - the car will stop starting. Most true way - This is a flashing controller. To do this, you will need an experienced master and good equipment.
Another option to solve this trouble is to establish a lambda probe deck. They are two species: mechanical and electronic.

Mechanical lambda probe

Drawing for the manufacture of mechanical decking lambda probe

Mechanical cheating is a simple spacer between the surface of the receiving pipe and the lambda probe sensor. Spacer - a hollow cylinder of bronze or heat-resistant alloys. Ceramic crumb is placed inside the cylinder and a small pass-through hole is made.
By analogy with the catalyst, ceramics oxidizing harmful gases (CH and CO) with oxygen, and normal readings come to the sensor. You can purchase a finished product, in the market now there are a large number. The price of lambda-probe bending varies from 200 to 900 rubles.

Electronic destruction of lambda probe

Electronic style of deception is a diagram that is embedded between the sensor and the ECU. The meaning of such a scheme is to distort the data from the lambda probe. It is used mainly at. The price of the device from the manufacturer with the built-in microprocessor is 1000 rubles.

How to make a deck of lambda probe do it yourself

Mechanical lambda probe fraud do it yourself

Mechanical cheating is a hollow cylinder into which ceramic crumb is placed and a small hole is made.

You will need a bronze or steel (heat-resistant) billet. On the lathe with this simple drawing, you can quickly make a snap.
It is easy to cheer. You need to find the lambda probe connector and disconnect it from the electrical network. Then unscrew the lambda probe sensor, connect with the made spacer and screw into place. Important moment: cheering is installed on a serviceable sensor.

Electronic destruction of lambda probe do it yourself

Diagram electronic decking lambda probe

Electronic delicate put to the connector. You can do this using a soldering iron, and just trim the wires and insulate them.

First you need to decide on how your specific lambda probe is connected. To do this, familiarize yourself with the lambda probe connection scheme.
Now we collect a device from a non-polar capacitor, a capacity of 1 μF and a resistor with a resistance of 1 MΩ. To work, you will need: a knife, soldering iron, rosin and solder. Squeeze the diagram of lambda probe decks with your own hands.
Installing the deception best to the connector. To do this, enter the device into the wire connector from the sensor. You can do this using a soldering iron, and just trim the wires and insulate them.
There are also more advanced diagrams of the lambda probe emulator for making with their own hands.
As you can see, "fool" the cunning sensor lambda probe is not so difficult. The main thing is to understand the principle of its work and a little bit correctly corrected.

Modern cars are equipped with various systems of control, including lambda probes. The latter also have names: oxygen controller, O2 and DC sensor. This controller is part of the exhaust system that meets EURO-4 EOCSTANDARTS and higher. If the probe faults malfunction, the motor goes into alarm mode, and the error signal is displayed on the panel. To overcome the system, car owners invented to use Lambda Probe Checkout, do it yourselfit can make every car owner who has knowledge in electronics. Today we will understand how to do it.

What is a lambda probe and why do you need cheer

The emergence of such mechanisms was provoked by hard environmental standards. After installing B. modern cars Catalytic neutralizers, there was a need to control the composition of the air-fuel mixture. This feature took a lambda probe.

The name is based on the Greek letter denoting an excess of air in the fuel and air mixture. Lambda probe is a sensor for measuring the quality of exhaust gases. If the lambda probe is faulty, then the EU begins to work on the averaged parameters. This leads to an increase in fuel consumption, power reduction and other unpleasant consequences.

The lambda probe is the most vulnerable sensor in the car, so car owners have come up with special decens, allowing you to transfer the necessary indicators to the sensor or block them at all.

Lambda-probe freezing: instruction

Today there are several options to makelambda Probe Check. The easiest option is to install a mechanical sleeve. Those who are friendly with electronics can make a simple electronic circuit. The third affordable option - flashing the controller. The problem will solve any of the above options, which of them to use depends on the skills and skills of the car owner. It is worth noting that today special devices are sold and if you are not sure about your abilities, it is better to buy a fixture or contact a professional. This will help avoid many problems with the machine.

Mechanical destruction

The first, and the most simple way - the installation of a metal sleeve between the lambda probe and exhaust pipe. For the manufacture of parts, you need work skills on the processing lathe. In addition, you need to prepare a metal blank, preferably from bronze or heat-resistant steel, dumping and set of keys.

If you do not have the skills to work with a turning machine according to the drawing, then it is better to reconcile this business to a familiar specialist. It is important to observe all the sizes and proportions specified in the drawing. The internal cavities of the plug must be filled with ceramic crumbs with a catalytic coating.

After the manufacture comes no less an important stageYou must install the plug. To do this, do the following steps.

After starting the battery, the sensor on the control panel will stop out the error, and the machine will work as a clock. This version of the decking is suitable for all cars in which the sensor is screwed into the housing.

Electronic variant

If you wish, you can adjust the signals that the probe submits to the controller. To do this, use the scheme It can be made subject to the presence of minimal knowledge in electronics.

Such bellows are connected to wires directed to the sensor. Installation location different cars different is the central tunnel between the seats, or even motor compartment.

Here is a list of materials that will be needed in the manufacture of lambda probe decens with their own hands.

• Soldering iron with a thin tip.
• Condenser, non-polar 1 μF Y5V, +/- 20%.
• Resistor 1 MΩ, C1-4 imp, 0.25 W.
• Rosin, tape and knife.

In order for the collected diagram to save the strength of the structure and simply did not break it better to place it in the plastic container and pour epoxy.

To mount a bearing, you must turn off the minus terminal from the side battery. Cut the wire moving from the sensor to the connector. Blue wire connect through a resistor. Condenser sweep between white and blue wire. Inseulate outdoor connections.

If you do not even have the slightest experience with electricians, it is better not to take for this occupation. Today in the automotationals a sufficient number of ready-made solutions, with an easy installation.

Refracting controller

Another option to solve the problem - reflash the control unit. This approach allows you to block data processing from the second oxygen sensor. After flashing, all available lambda probes are removed from the car and no longer used.

It is worth noting that this is a rather risky step. It is better to entrust work to a professional, since there are chances to completely disable all the onboard electronics. It is often impossible to return the factory settings after such manipulations. With caution, it is worth treating and buying ready-made firmware on the Internet.

In any case, a specialist who can easily turn off the processing of data at the system level can easily work on software.

These are all optionslambda-probe beckles, do it yourself You can do each of them, but it is important to really understand the question. Each intervention may entail unpleasant consequences: disruption of the motor, failure in on board computer, electrical wiring damage and much more. Be extremely careful or still trust the work of a professional.

By the solution of one well-known and painful problem is to freeze lambda probe with their own hands. (In the future, we will call it a sensor) converts data into an electrical signal on how much the exhaust gases contain oxygen.

The sensor supplies an electrical signal at the moment when it recorded changes in the oxygen content. The signal is transmitted to the controller that receives the signal and compares the data obtained with the indicators in memory.

When the data is lost With optimal values \u200b\u200b(for the current mode), the control unit changes the duration of the injection accordingly. This is done to achieve maximum engine performance, fuel economy and reduce the number of harmful emissions.

Manufacturers recommend to diagnose the sensor regularly, after about 30,000 km run, and replacement - after 100,000 km. Usually such mileage manufacturers limit the life of the lambda probe. To repair it by the way, it is impossible.

However, few of the motorists are listening to these recommendations, and remember the sensor only when problems occur. As a result, the transferring "anniversary" mark of 100 thousand km, many people get acquainted with an unpleasant signal Check Engine. The reason, most likely became an incorrectly working sensor (well, or already broken).

Lambda probe, made with his own hands, becomes a solution to this problem, and the check engine will stop disturbing you. On cars, which, installed 2 sensors, one before, and the second for the catalyst.

The signals from these two sensors should differ, then the control unit adjusts the injection duration according to the received signals. But if one of the sensors failed or the owner of the car removed the catalyst (as an option -), the signals from two sensors will begin in their values \u200b\u200bto coincide, which will be perceived by the control unit as an alarm mode.

The controller in this case will select averaged parameters for injection control, which will result in an increase in fuel consumption with simultaneous reduction in engine power and its unstable work on the idling. And on the dashboard will light up Check Engine.

In older cars, the sensor is usually installed one (before the catalyst).

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Mechanical type of decking

Decide this problem with the help of a deception of two types. If the mechanical type of deck is selected, the so-called "Space" is set to the catalyst site. This is a detail of bronze or heat-resistant steel, the size of the part must be strictly defined. A small hole is drilled in the spacer, through which the exhaust gases can fall into the spacer.

Gas interact with a crumb of ceramics placed inside the spacer. The crumb is pre-coated with a catalytic layer. As a result of this interaction, the oxidation of CO and CH oxygen occurs and the concentration of harmful substances is reduced.

Signals from both sensors will be differentThe control unit will "see" a change in signal sinusoids changed and will perceive it as a standard operation of the catalyst. This option is the most budget. The mechanical version is equally well suited for almost any car, domestic or imported, on which the sensor is screwed.

Electronic cheating

Electronic type destruction is much more complicated. We are not talking about those "self-defense" ways that are practicing advanced motorists. They themselves sold the scheme and make it using one condenser or one resistor. Surgical technological devices are sold (this is an emulator) with a microprocessor.

These devices able to ensure the correct operation of the control unit, and not just to deceive it. The microprocessor mounted in such an emulator is capable of assessing the exhaust state, to analyze the situation with the signal processing from the first sensor, after which it is formed to create a signal that corresponds to the signal from the second standard operating sensor with a working catalyst.

Refracting

In addition to two types of deception The problem is solved also by flashing the control unit. The meaning of flashing is that the control unit due to the flashing algorithm ceases to take into account the signal from the sensor installed after the catalyst, and focuses in its work only on the signal from the first installed in front of the catalyst.

However, it must be borne in mind that the factory firmware is almost impossible to find, because they do not comply with modern European environmental standards. It remains to contact a familiar specialist (a well-known specialist!), Which will disable the survey of the control unit of the second sensor, will turn off in the program to the program and get a high-quality lambda probe deceit with their own hands.

You can, of course, buy a firmware via the Internet or on the market, but in this case all the risks of possible damage to the engine will be exclusively for your concern. Because you buy "Cat in a bag".