Throttle sensor 21099 injector

Hi all! I finally decided to do this. ) And I don’t regret it at all. Let's start in order. We will need: 1) Desire (there is no way without it) 2) Carburetor cleaner 3) Screwdriver 4) Ratchet with a 13 head 5) Hands growing from the right place (the most important thing) 6) Remote control gasket 7) Drilling file

Removing the remote control (I won’t quote pictures from the Murzilka, it’s described there in some detail), before doing this, open the cap of the expansion tank (to relieve the pressure). We disconnect the IAC and TPS connectors, loosen the clamps of the air hose, crankcase ventilation hose, coolant supply and discharge hoses. Using a 13mm socket, unscrew the two nuts securing the throttle assembly to the receiver and remove it from the studs.

Washing and cleaning both the throttle valve and the entire assembly is not a difficult task. But nevertheless, many car owners do not know how to clean correctly, why to clean and when to clean, and having only a little experience in car maintenance, they are afraid to climb under the hood and do anything with their own hands.

In this article we will analyze the entire procedure for flushing the throttle assembly, and I hope that the typical car owner will no longer have all the questions about performing this operation.

Signs of a dirty throttle body

The most common symptoms associated with a dirty damper:

1. poor or unstable engine starting “every time”;
2. unstable idling, speed fluctuates;
3. when driving at low speeds, the car twitches;
4. Difficulties at idle, engine stalls at idle.

All of these signs indicate a dirty throttle body. But don’t rush to draw conclusions and rush to clean the unit, because... the same signs may indicate a malfunction of some sensors: IAC, TPS - these sensors are located on the throttle assembly and may be faulty. In particular, high-quality flushing of the throttle assembly can cure these sensors, but not a fact (by following the link, you can check, clean, replace the IAC, check the TPS, repair and replace it). Also, a faulty mass air flow sensor has similar symptoms. It is advisable to clean the throttle assembly at intervals of 30 thousand km.

VAZ-2110, throttle valve: do-it-yourself cleaning

On fuel-injected VAZ-2110 cars, the throttle valve plays a huge role; the unit is practically trouble-free. But it still requires attention from the driver, since the quality of gasoline is not always high. With the help of a throttle assembly, injection engines outperform their carburetor counterparts - significant gasoline savings and stable operation of the injection system are ensured. But maintenance of the valve still needs to be carried out in a timely manner so as not to disrupt the operation of the entire injection system.

Flushing the throttle valve

In this article we will describe two types of throttle valve cleaning:

These two types differ in the degree of difficulty of cleaning and, accordingly, in quality.

Superficial cleaning

The essence of this cleaning is that we will not completely disassemble the entire throttle assembly, but will go over the valve with a cloth and remove surface dirt.

For work we will need:

• Any cleaning agent: carburetor cleaner, alcohol, thinner, gasoline, wd-40. They differ only in the degree of “removability” of dirt and that’s all.
• Rag.
• Brush.

First of all, we remove the air filter bell from the throttle valve, take our cleaning agent and spray it inside the throttle valve. We begin to clean the surface with a rag and brush. Also, do not forget to open the damper itself and clean it from the back side. This completes our process; we reinstall the air filter pipe and that’s it. But with this cleaning method, we will not be able to completely clean all the insides of the throttle valve, we will not be able to blow through all the holes and channels, so it is better to use a complete cleaning.

Adjusting the throttle valve on VAZ-2108, 2109 and 21099

The throttle valve is one of the most important elements of a car.
It is part of the intake system of a gasoline internal combustion engine and is responsible for supplying air to the engine during the formation of the air-fuel mixture. When the valve opens, the fuel mixture becomes richer, and when it closes, on the contrary, it becomes leaner. The throttle valve can be compared to an air valve. As soon as it opens, the pressure of the surrounding atmosphere and the intake system is equalized. At the moment when the “valve” closes, the opposite situation occurs - the pressure in the system drops to a minimum level.

Main types

Throttle valves can have different designs, depending on the type of carburetor:

— in carburetors of constant vacuum and with falling current, such a damper has the form of a spring;

— in a horizontal type carburetor, the throttle valve has the form of a gate located vertically. Its movement allows you to adjust the cross-section of the diffuser, in the area of ​​which the damper moves;

— in gasoline injection systems, this unit is a separate device, the task of which is to dose air and transfer it further through the system to the manifold.

It is also worth noting that throttle valves can vary in type of actuator - the latter can be mechanical or electrical. What are their differences? Everything is simple here.

1. Electrically controlled throttle valve:

— allows you to adjust XX. This is possible by moving the damper in one direction or another;

— there is no mechanical “communication” between the accelerator pedal and the damper itself.

Electronic systems are more reliable and accurate, which is why they are used in most cars. The system includes an ECU, a group of input sensors, an actuator, switches (installed on the clutch and brake pedals), and a sensor that fixes the position of the accelerator pedal. If additional options are available, the system may involve a brake system, climate control or cruise control.

1. A mechanically driven throttle valve is installed only on old (including domestic) cars. Modern manufacturers have long abandoned this control option. The main difference between this system is that the throttle valve and gas pedal are connected by a metal cable.

Basic faults

Throttle valve problems are easy to identify. For example, when accelerating, you actively press the accelerator pedal, but the car is in no hurry to carry out the command. Such “dullness” is most often explained by problems with the adjustment of this unit. Of course, the remote control unit itself can also fail, but most often the problem is in the damper.

In addition, signs of a malfunctioning damper include:

— “swimming” of idle speed;

— there is no increased speed when starting a cold engine;

- setting the power unit to “cold” or “hot” can cause problems;

— if the gearbox is equipped with an automatic transmission, there may be a jerk when switching to the “Drive” position;

— the servo drive jams and wears out;

— power reduction is possible;

- fuel consumption increases.

When the first signs of a malfunction appear, set aside half an hour of your time to carry out adjustment work. For some reason, many car enthusiasts do not want to get into the carburetor for fear of disturbing or breaking something. In fact, there is nothing complicated in this work. If you strictly follow the instructions, you can correctly adjust the throttle and forget about the problems mentioned above forever.

Adjusting the throttle valve on VAZ-2108, 2109 and 21099

In this article we will deal with adjusting the throttle using the example of the most popular domestic cars - VAZ-2108, 2109 and 21099. This work must be done in two cases - if the throttle valve does not close completely or does not open completely. So let's get started:

1. Prepare the tools you will need for the job - a set of wrenches and screwdrivers.
2. Make sure the throttle valve really needs adjustment. For this:

— loosen the fastening clamp with a screwdriver and discard the thick air hose from the damper pipe;

— loosen the fastening clamp (again with a screwdriver) and discard the second hose, which is connected to the large branch of the crankcase ventilation;

— ask an assistant to sit behind the wheel of the car and press the accelerator pedal all the way;

— at the moment of pressing, carefully observe the behavior of the damper and its final position. With the accelerator pedal depressed as much as possible, the throttle “curtain” should be fully open;

— give the command to the adjustment partner to release the gas pedal;

- check the position of the damper again (if everything is normal, then it should return to its place and close completely).

In a situation where the throttle lock does not fully open when the accelerator pedal is fully pressed and does not close when the pedal is released, adjustment is necessary:

— loosen the cable locknut and unscrew the adjusting nut. Look at the damper. Make adjustments until the throttle valve is fully open when the accelerator pedal is depressed.

— loosen the lock and tighten the adjusting nut. Achieve complete closure of the remote control.

When performing work, be careful with the throttle cable. If handled carelessly or over-tightened, it may break. Such a problem will significantly add to your work (you will have to replace the cable).

History of VAZ 21099

In the early 80s, constructors and designers were faced with the task of creating the most expensive and prestigious car of the VAZ series. It was supposed to replace the VAZ 2106 and become as unified as possible with the 2108/09 generation. Full-size plasticine models were made already in 1981.

Two years later, all the necessary tests of the VAZ 2108/09 were completed. Since by that time the new sedan was not ready and in order not to bother with permits and lengthy approvals for the new car, it was assigned the index 21099. Due to material problems, production began only in 1990, and in the late 90s the era of forced injection and on-board computers. The idle speed, crankshaft and throttle sensors of the VAZ 21099 injector have become a headache for motorists.

This car is a five-seat front-wheel drive sedan with four doors. It is a modification of the VAZ 2109 with a hatchback body. The car differs from the LADA Samara family only in the front radiator grille and the presence of a trunk. The car is well designed and calibrated, has the best handling in its family, high dynamics and stability, and the increase in maximum speed was very popular with consumers, and before the release of the “ten” it was considered the best VAZ car.

Until 1997, “ninety-niners” were produced exclusively with carburetor engines; later, such engines began to be replaced by units with injection equipment. Moreover, initially the idle speed sensor, crankshaft sensor and throttle sensor of the VAZ 21099 were manufactured abroad or installed from similar foreign cars. In subsequent years, production of domestic parts with forced fuel injection began under license.

Under the hood of the "nine"

The standard 21099 engine has a displacement of 1499 m3. The driving wheels are front, the steering is rack and pinion type, the maximum speed is 160 km/h. This car became a revolutionary in efficiency, fuel consumption on the highway was 5.9 liters, and in the combined cycle 8 liters per hundred.

In 2004, AvtoVAZ stopped producing this model, switching to Samara-2 generation cars. However, new cars inherited the old on-board computer and the same ECU sensors. So the VAZ 21099 detonation sensor is also installed on the updated 210115. For some time, VAZ 21099 were produced in Ukraine, at the Zaporozhye SKD Automobile Plant, from Russian components.

What you need to know when buying a used car

Since 1998, the VAZ 21099 began to be equipped with injection engines, which are a priority to buy. Once you own a used car, you will often need to repair it yourself. There is nothing wrong with this; changing the knock sensor of a VAZ 21099, whose injector has begun to act up, will not be difficult. Most operations do not require special training or special knowledge - you can do everything yourself by watching a video from YouTube or reading step-by-step instructions on the Internet.

The best way to check the condition of the engine is to measure the compression in the cylinders. For 21099, the best result will be 13 units, and if it is less than 10, then a major engine overhaul will be required. It is worth considering the fact that the difference in readings when measuring in different cylinders should not exceed 1%. It is not advisable to buy a car with a dirty, oily engine, as this indicates serious damage. Beware of cars with ECU problems, since a failed VAZ 21099 or 21115 throttle sensor can ruin your nerves for a long time, you will get tired of looking for the cause of the breakdown.

Replacement

In fact, changing this sensor is insanely easy. So don't rush to send your car to a service station. Everything can be done with your own hands, the quality will not suffer from this.

1. To remove the throttle position sensor, you first need to find it.
2. As we have already noted, the desired unit is located on the side of the throttle pipe on the throttle valve axis.
3. Having found the element, pick up a shaped screwdriver.
4. Using this simple tool, unscrew a couple of bolts that hold the device.
5. Pay special attention to the gasket that is available under the old regulator. We do not recommend using it again; it is better to immediately buy a new one. Often the gasket is already included with the throttle sensor itself.
6. After removing the old sensor, you can slightly clean the place where it is installed if there is dirt there.
7. Next, a new sensor is installed along with a new foam gasket and the bolts are tightened.
8. Try to tighten the fasteners as far as possible, otherwise the new throttle sensor will quickly lose its effectiveness. The work will have to be done again.
9. There is no need to make any adjustments after replacement.
10. The zero mark on the controller will determine that the throttle is completely closed.

Main malfunctions of the power plant

Many car owners know that the idle speed sensor and knock sensor often fail, ruining the drivers' nerves: the car can simply stall or spontaneously increase the crankshaft speed in the middle of a busy intersection in the city, causing an emergency.

Removing the throttle sensor

The VAZ 21099 throttle sensor often causes trouble, causing on-board computer failures, not to mention uncontrolled driving and the dangers associated with it. As mentioned above, trouble with VAZs often occurs due to flooding or other reasons for the ingress of moisture, which leads to failures of the on-board computer, disruption of the operation of individual sensors or the entire electronically controlled engine unit.

You need to know that the idle air control is an important part of the distributed fuel injection system and is used for proper engine operation in all modes, including idle. The design of this regulator is based on a stepper motor, assembled into a single unit with a cone-shaped needle, on a spring; the idle air control (IAC) is located in the throttle system housing. It is located in the same place as the throttle sensor on VAZ 21099, 2109.

How to adjust the throttle valve on a VAZ 2108-VAZ 21099?

The throttle valve does not open fully:

1) In order to adjust the position of the throttle valve, slightly loosen the cable nut under the letter “B”, and at the same time tightening the nut under the letter “A”, ensure that the throttle valve opens completely.

The throttle valve does not close completely:

1) Slightly loosen the nut under the letter “A”, and then tighten the nut “B” until the throttle valve is completely closed.

Important! 1) Handle the throttle cable carefully so as not to damage it!

For newbies! Question: Where is the throttle valve located in the injection engine on the VAZ 2108, VAZ 2109, VAZ 21099? Answer:

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How does the idle speed sensor work in an injection system?

After the ignition is started, the idle mode sensor extends its rod, which in its maximum state rests against the hole in the throttle pipe. The regulator is then busy counting the steps that return the valve to its original position. It entirely depends on the firmware version of the on-board computer. For example, Bosch firmware is designed for 50 steps. In this case, the injector sends an opening control signal to the VAZ 21099 throttle valve.

Adjusting engine speed

At the time of adjustment, the engine must be warmed up and the sensor must operate in 30 - 50 steps. Depending on the number of sensor steps, the volume of the air mixture that passes into the combustion chamber through the calibration hole changes. You need to understand: the more the sensor rod is extended, the more steps the sensor will produce. When purchasing, you must carefully select the idle speed regulator for VAZs, paying attention to the gap between the rod head and the flange: it should not exceed 2.3 cm!

Forced distribution fuel injection systems also use a mass air mixture flow sensor (MAF), which supplies a certain amount of air into the combustion chamber through the on-board computer. Then the computer determines the optimal amount of fuel that needs to be supplied along with the air mixture for reliable ignition and uniform combustion, ensuring optimal operation of the combustion engine. In this case, the crankshaft sensor provides information about the number of engine revolutions, thereby controlling the idle speed regulator through the on-board computer. According to this scheme, the engine always receives the optimal amount of air-fuel mixture into the combustion chamber and operates with maximum efficiency. If the engine is cold, the controller will specifically increase the crankshaft speed using the idle speed regulator, ensuring that the engine reaches the desired thermal conditions quickly and is able to drive without a long warm-up procedure.

Replacing the Gas Cable VAZ 2108 Carburetor

Press the accelerator pedal fully. In this case, the throttle of the first chamber should open one hundred percent. This can be found by the position of the throttle control sector, which should move to the last position. Release the accelerator pedal, while the entire VAZ 2109 throttle valve of the first chamber is completely closed. The throttle control sector must be completely changed. If this does not work, adjust the drive. To adjust the gas drive of the VAZ 2109, unscrew one of the adjusting nuts.

Turn the other nut to make sure the throttle opens and locks completely. Then tighten the loose nut. When you tighten nut 1, the valve opens, and when you tighten nut 2, the valve closes. Having replaced the gas cable of the carburetor vas 2109, I just changed it to Opel, now I can’t find it either, well, there are no locks, only hood adjustment. so asked. Thanks again to the regulator (dividing strip between blocks.

Replacing the gas cable

The pedal cables and damping element are already covered in rust on the moving parts of the suspension and gearbox. Problems. Replacing the carburetor gas cable VAZ 2109 After expanding all the elements of the multi-spasmodic system, the new parking brake handle protrudes to ensure that the parking brake of the car maintains its position without movement and will not be a prerequisite for various problems.

VAZ 2108, 2109, 21099 Replacing the speedometer cable (high panel) Panel dimensions

Without it, broken cables are clearly visible and more or less revived: the hood cable from Moskvich-2141 perfectly replaces the Felicia gas cable. 2cm fully pressed) flat. changing the cowl cover on a Tiguan. The clutch must be pulled forward as the plastic disconnects the cable from the clutch pedal. I like it, although it was removed, the companion asked me to fall off due to a broken clutch cable. Length about 700.

Diagnostics and repair of HHH

Replacing the sensor is quite simple. First, disconnect the “ground”, the negative terminal of the battery, then you need to release the plastic latch and disconnect the contact block from the idle speed sensor mounted on the throttle pipe of the VAZ 21099. Next, you need to unscrew a couple of fastening screws and remove the regulator from the pipe. Usually everyone loses bolts at this point, since the screw located next to the receiver is very inconveniently located. Car mechanics advise you to first unscrew the left screw, then pull the sensor slightly towards you and easily unscrew the second bolt. It is better to reassemble in the reverse order, lubricating the regulator with oil for ease of installation.

Calibrating a new sensor

Having installed a repaired or new, just purchased sensor, it needs to be calibrated. This is done very simply: connect the negative battery terminal, turn on the ignition briefly (for 5-10 seconds). The ignition is turned off. The device will not be calibrated if the battery has not been disconnected. In a similar way, the VAZ 21099 throttle sensor, the injector of which operates in normal mode, is tested and calibrated.

Auto experts strongly recommend that motorists use DXX produced in the 2112-114830 series. Regulators “KZTA” РХХ 2112-1148300-04 are also popular. It is necessary to take into account that the final mark of the regulator is of great importance, and it is best to buy a device with the same marks as those that were on the broken one. There are four types in total: 01,2,3, 04. They have a strict interchangeability procedure: the regulator with the number 01 can only be changed to 03, and 02 only to 04 and vice versa.

It is noteworthy that the idle speed sensor cannot be diagnosed via a computer; indirect signs indicate its breakdown:

• the engine constantly stalls in idle mode;
• The idle speed constantly fluctuates (although the DPKV is working);
• when the engine starts cold, there is no increase in crankshaft speed;
• The engine stalls right when the gearbox is shifted.

It is noteworthy that the symptoms of a broken DPS are similar to malfunctions caused by a defective DPS. The difference is that the second option can be diagnosed by a critical error on the on-board computer. A check email notification will pop up. It’s good that DXX for VAZ 21099 costs no more than 400 rubles.

Adjusting the throttle valve on VAZ 2108, VAZ 2109, VAZ 21099

Welcome! Today we will adjust the throttle valve on injection vehicles VAZ 2108, VAZ 2109, VAZ 21099.

When do you need to adjust the throttle valve on a VAZ 2108-VAZ 21099? The throttle valve is subject to adjustment when: 1) It is not fully opened. 2) Or when it is not completely closed.

What is needed to adjust the throttle valve on a VAZ 2108-VAZ 21099? 1) Screwdrivers. 2) Wrenches.

How to check whether the throttle valve needs adjustment on a VAZ 2108-VAZ 21099? 1) First, disconnect the air hose, which is marked with the letter “A”, from the throttle valve pipe, and also, together with it, disconnect the hose of the large branch of the crankcase ventilation, which is marked with the letter “B”.

Note! For information on how to properly disconnect the air hose from the throttle valve, see the article “Replacing the throttle valve on a VAZ 2108, VAZ 2109, VAZ 21099”, in the section: “ removal ”, in paragraph “2-3”!

2) Then put one person behind the wheel of your car and ask him to press the gas pedal all the way.

3) At this time, look at what position your throttle valve is in.

Note! The throttle valve must be fully open!

4) Then ask your assistant to take his foot off the gas pedal. 5) At this time, check what position the throttle valve is in; it should be completely closed.

Note! If the throttle valve does not open completely, or does not close completely, then adjust it!

Knock sensor

Very often, the knock sensor of VAZ 21099 and 210115 fails, thereby disrupting engine operation. After all, its main task is to determine the moment of fuel microexplosions.

Any motorist knows that good proper operation of the engine depends on optimally selected ignition timing angles; ideally, they are different for each engine operating mode. This is why there is an ECU, whose main task is to set these angles as ideally as possible using a knock sensor. It is he who can accurately determine that the ignition timing is set incorrectly. The ECU program is written to set the ignition timing as large as possible in order to prevent the engine from going into the detonation zone.

The VAZ 21099 knock sensor, the injector of which has not been cleaned and diagnosed for a long time, fails very quickly, especially if it is a semi-handicraft fake, of which there are more than 80% on the market. After all, it is equipped with a very sensitive element that works on the principle of the piezoelectric effect. This device is mounted directly on the cylinder block.

If the knock sensor of a VAZ 21099, 210115 or other car brands fails, then the engine begins to overuse fuel, overheat and stall, it loses traction and the timing belt wears out greatly. The VAZ 21099 knock sensor is considered broken, the injector of which begins to produce the following tricks:

• the motor is troublesome;
• the car loses dynamics;
• when starting from a standstill and on an ascent, the check engine of the on-board computer lights up;
• The check engine lights up when the car accelerates quickly.

You can buy a VAZ 21099 knock sensor at any auto store for up to 200 rubles, or install a Volgov one, which costs up to 500 rubles and has unsurpassed quality.

Do not skimp on the knock, idle or throttle sensors of the VAZ 21099. And then the injector will be able to serve you faithfully for many years.