Bosch 0 258 006 537 Oxygen sensor for VAZ niva 1.7 i (vaz-21214)

What should you do when your car suddenly loses traction or begins to consume gasoline at too high a rate? An experienced technician will tell you that the problem is with the lambda probe and it needs to be repaired or replaced. Owners of foreign cars are especially susceptible to this problem. And really - what to do in such a situation? After all, you yourself understand that nowadays auto parts are not cheap. Is it possible to prevent the breakdown of a lambda probe, what are the signs of a malfunction of a lambda probe, and what is it? Let's look at everything in order.

The main symptoms of a malfunctioning lambda probe

Among the signs that allow you to determine in advance whether the probe is working or not are the following:

• The appearance of instability during engine operation (the engine begins to rapidly gain speed and also stalls sharply);
• Deterioration in the quality of the fuel mixture pumped by air into the cylinder system (this leads to excessive consumption of fuel);
• Uncontrolled and ineffective fuel supply (malfunctions in the operation of the engine and electronic system of the machine);
• Gradual appearance of intermittency in engine operation at idle speed;
• Reduced engine efficiency at maximum speed;
• Problems in the operation of electronic systems (faults in the sensor lead to unstable operation of the engine compartments, since the fault signal is transmitted with a delay);
• The presence of periodic “twitching” of the car;
• The appearance of strange pops when the engine is running;
• Untimely (slow) response of vehicle engine systems to pressing the accelerator pedal;
• The appearance of a constantly flashing light indicating a sensor malfunction on the central instrument panel.

If you find one or more of these reasons in your vehicle, you should consider replacing this device.

Detailed problem definition

Common signs of a malfunctioning lambda probe include the following:

• increased fuel consumption;
• the occurrence of jerking while driving;
• a sharp decrease in the power of the power unit;
• unstable idle;
• the appearance of a sharp, toxic odor in the exhaust gases of a car.

It must be emphasized that the symptoms listed above are not always the result of a malfunction of the oxygen concentration sensor. If these symptoms are detected, the lambda probe must be thoroughly checked. Let's take a closer look at this process.

Where is the oxygen sensor located?

The main purpose of the DC is to assess the quantitative oxygen content in the exhaust gases and send data to the electronic control unit. The latter, based on the analysis, adjusts the position of the ignition angle. Thus, the combustible mixture becomes enriched and depleted.

Systematic operation, low-quality fuel, high temperature conditions are the main factors for premature failure of the mechanism.

The replacement process is not at all complicated, but requires care on the part of the repairman. However, here too, not many car owners are ready to buy original spare parts, preferring cheaper analogues.

To prevent the electronic control unit from identifying a system error, the lambda probe is replaced with one of the following types of decoys:

• Mechanical;
• Electronic.

On Chevrolet Niva models up to 1995. The controller is installed on the metal body of the exhaust manifold. The second generation Chevrolet Niva (after 1995) is equipped with two DCs: diagnostic and control.

The first is located in the exhaust manifold housing, the second is after the manifold coupling.

Access to equipment for preventive maintenance from under the bottom of the car, as well as through the top of the engine compartment.

The average service life of the recreation center is 80 – 110 thousand km. depending on the driver's compliance with the manufacturer's recommendations.

The symptoms are in many ways similar to other breakdowns, so it is important to correctly identify the breakdown at the initial stage.

• Difficulty starting the engine “cold” or “hot”;
• Increased fuel consumption;
• Power reduction;
• Passive acceleration dynamics;
• The engine is not running properly;
• An indicator on the instrument panel indicates the presence of system errors in the electronic control unit;
• Periodic shooting sounds are heard from the exhaust pipe, which indicates an enrichment (leanness) of the combustible mixture;
• Blue, gray, black smoke from the exhaust pipe.

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2022: photos, prices, configurations, characteristics - Torgmash: LADA dealer in Moscow (Moscow and Moscow Region) If one or more signs are detected, immediately contact a service station specialist for a comprehensive diagnosis.

• We install the machine on the inspection channel (pit);
• We turn off the engine, open the hood;
• We wait until the exhaust system cools down to a safe temperature so as not to damage the skin of the hands;
• Remove the limit switches;
• Use the key to “17” to unscrew the sensor;
• We screw in the DC, put on the terminals;
• We start the engine and check the functionality.

DIY replacement completed.

Services that allow you to check punctuation online

Let's move on to listing the services that allow you to check the correct placement of commas on the Internet online.

Service text.ru

This text.ru service, among all the wealth of its capabilities, has the ability to check spelling and punctuation online, which is performed absolutely free. The verification algorithm includes the detection of typos, repetitions of words, extra spaces, two commas, errors in coordination and other linguistic errors, which greatly simplifies the author’s work with the text.

1. To check the text for punctuation errors, go to the specified resource text.ru.
2. Paste the text to be checked into the appropriate window, then click on the red “Check Spelling” button.
3. The text will be analyzed by the service, after which errors will be highlighted in red with the essence of the error found indicated at the top.
4. The results of SEO text analysis will also be displayed on the right.

Resource languagetool.org

1. To work with a resource, go to it, paste the required text into the appropriate window, and click on the blue “Check on the right” button.
2. Problematic areas in the text will be tinted with a light red background, by clicking on which you can familiarize yourself with the essence of the error and options for correcting it.

Service textis.ru

The textis.ru service also allows you to check commas for free. Its functionality is similar to the already described online services - you go to this resource, insert your text into the appropriate window (in the “Insert your text here” window), and then click on the “Check” button.

At the same time, the quality of the check is at a fairly average level, significantly inferior to the already mentioned services text.ru and languagetool.org.

Website online.orfo.ru

This is one of the most famous and popular services on the RuNet that allows you to perform punctuation analysis online.

1. Working with it is the same as the services already described - go to online.orfo.ru.
2. Paste the text you need into the appropriate window, and then click on “Check”.
3. Problem areas in your text will be highlighted with a pink curved line.

Grammarcheckforsentence.com tool

For Anglomaniacs and lovers of the English language, I can also recommend the service grammarcheckforsentence.com. This is one of the most popular English grammar and punctuation checking tools you can find on the web.

Working window of the grammarcheckforsentence.com service

The principle of its operation is similar to other services in the series I describe - you go to the resource, insert your English text into the appropriate window, and then click on the “Check” button.

Do-it-yourself controller diagnostics on a Chevrolet Niva

To check the equipment we use a multimeter. Most motorists have the device in their garage. The sequence of actions is as follows:

• We place the car above the inspection hole;
• Remove the limit switches;
• Connect the multimeter terminals;
• We activate the device to the “Resistance measurement” position;
• We analyze the received data.

If the arrow tends to infinity, the lambda probe is working; if the arrow drops to zero, the part is damaged. Remember that the controller is non-separable and cannot be prevented.

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Less popular causes of failure

Please note that when installing a lambda probe, you cannot use various sealants that are based on silicone. You can also destroy the lambda probe if you try to start the engine many times, taking short pauses between attempts.

Provided that the engine does not start. This will certainly lead to the air-fuel mixture accumulating in the exhaust system. After some time, it will ignite and create a powerful blast wave. Even a poor-quality contact or a short circuit in the output circuit can destroy the device. The total resource of the elements ranges from 30 to 70 thousand kilometers. It largely depends on the conditions under which the operation takes place. The longest service life is for sensors that have additional heating. Most foreign cars use a lambda probe of this design. The symptoms of a malfunction (“Ford Focus 2” or “Skoda” are in your possession) are the same. Therefore, you can diagnose it yourself if you correctly recognize all the symptoms.

Repair or replace the lambda probe?

Just like replacing a fuel pump on a VAZ-2110, repairing a lambda sensor should be carried out at a car service center. However, in most cases, this spare part is completely replaced, since it simply cannot be repaired further. The problem is the high cost of original sensors from an official dealer.

As a result, most motorists decide to switch to using a universal sensor, which is suitable for almost any make of car and costs much less than its original counterparts. In addition, if you want to save money, you can purchase a lambda probe from disassembly. These are used sensors, but they may have a long warranty period. You can also immediately purchase a full-fledged model of the exhaust manifold, in which a lambda probe is already installed.

If the problem is only a small error in the operation of the sensor, you can quickly fix it yourself. The main symptoms of a malfunction are associated with its severe contamination when fuel combustion products settle. In order to understand whether the tightening of the cylinder head bolts affected the operation of the probe or not, you just need to show it to specialists at an auto center.

To dismantle the lambda probe, you will need to first warm up its surface to a maximum of 60 degrees. Then carefully remove it and additionally take out the protective cap. After this, you can begin cleaning with orthophosphoric acid, which helps to easily deal with any (even the most persistent) flammable deposits.

Warming up the surface of the lambda probe

Lambda probe device

At the end of cleaning the sensor, it is necessary to soak the spare part. To do this, you can use products for flushing the engine cooling system or just clean water. At the end of the work, be sure to dry the sensor and install it in its proper place.

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What and how can you check the lambda?

To check, you will need a digital voltmeter (preferably an analog voltmeter, since its “sampling” time is much shorter than that of a digital one) and an oscilloscope, if possible, the measurements will be more accurate. Before checking, you should warm up the car since lambda operates correctly at temperatures above 300C°.

We start the engine, do not disconnect the lambda connector. We connect the negative probe of the voltmeter (ordinary gauge) to the car body. We “poke” the positive probe on each wire contact and observe the voltmeter reading. When the positive heater wire is detected, the voltmeter should show a constant 12 V.

Natural enemies of hedgehogs

Sometimes hedgehogs have to fight back even dogs

In nature, hedgehogs have quite a few enemies that they regularly encounter. Most often, clashes occur with martens, foxes, badgers, ferrets and birds of prey. Understanding. that a fight cannot be avoided, the animal tries to strike first. To do this, he jumps on the enemy, trying to crash into him with his needles. And often this helps: when the enemy feels pain, he runs away.

Interesting fact: foxes have learned to drive hedgehogs into an environment where they do not have the opportunity to curl up in a ball and be completely protected by their quills.

Humans can also be considered natural enemies. People do not hunt hedgehogs, but their activities annually make more and more territories unsuitable for their life. Deforestation, air pollution - all this forces animals to look for a new home, but there are fewer and fewer suitable areas for this.

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Electric snag

The emulator has a microprocessor that corrects the signal for the ECU. The latter “believes” that the sensor is working and passes the data without interpreting it as an error.

In fact, there is no longer a catalyst in the design; instead, a section of the exhaust pipe is welded in.

The cost of the emulator varies from 1,500 rubles, which is 85–90% of the price of a new recreation center. Unlike a standard controller, the emulator has an unlimited service life.

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