VAZ 21099 - do-it-yourself repair: operation and repair manual

History and technical characteristics of the VAZ 21099

This is a front-wheel drive car (sedan body), which was produced in 1990-2004. The manufacturer launched a series of all-wheel drive Lada Victoria cars, but due to the high cost, Victoria was not successful. In Ukraine, it was produced from 2004 to 2011 at the ZAZ plant. At different times they gathered in Syzran, Zaporozhye, Togliatti, Kherson. The cars are equipped with a carburetor or injection engine with power from 64 to 135 hp. Maximum speed – 155 km/h. The gearbox is mechanical. The engine location is front, transverse. The average cost of the model is 130,000 rubles.

Initially they were equipped with a high instrument panel. Since 1999, cars have been produced with Euro interiors and Euro panels. In 2004, this Lada model was discontinued. It was replaced by the VAZ 2115. After purchasing a license to produce cars from ZAZ, AvtoVAZ produced 21099 (sedan).

Its production finally ceased in 2011. As with other VAZ models, a repair and operation manual for the VAZ 21099 – carburetor – was issued. And a separate repair and operation manual for the VAZ 21099 injector. Maintenance and operation of these vehicles vary. The publication of the manual continued until the production of cars ceased.

Known modernizations of VAZ 21099

In 1997, the model was restyled and received the name VAZ-2115. She became the first representative of the new Samara-2 family . This is what AvtoVAZ continued to produce after it stopped producing the VAZ 21099 in 2004.

As for the aforementioned Lada Victory model, at the time of assembly it had a rear spoiler, 14-inch alloy wheels, and a 1.6-liter engine . Thanks to its excellent characteristics, it was exported to Europe.

Repair features

This model, like all other Ladas, loves repairs. Unlike their foreign counterparts, they break down more often. But the cost of servicing this car is much lower than foreign cars. Replacing the same racks will be several times cheaper.

Experienced car owners improve and tune their cars. Thus, they correct some of the manufacturer's flaws.

Maintenance of this car for a novice driver is divided into 3 types:

Do-it-yourself problems.
Malfunctions that can be fixed at home, but with the help of a specialist.
Repairs carried out only at service stations.

The last type includes:

camber - toe;
wheel balancing;
recovery after a serious accident;
some types of body repair;
electrical diagnostics by computer;
engine boring;
flashing the on-board computer;
resetting errors on the computer;
vulcanization, etc.

The second type includes work that the owner himself can only partially do. If the driver is a beginner, he does not yet know how to weld, repair wiring, carry out work on engines, and does not know the structure of the car well. In such cases, experienced car owners or mechanics are called to help.

Weak spots

What weak points does the body of the domestic nine have? Let's try to find out.

If rotten or deformed elements of the car body are detected, they must be removed and appropriate measures taken to restore the integrity of these areas.

The most vulnerable areas of the VAZ 2109 body include:

Front floor, reinforced sills, doors, fenders and rear underbody;
The hood has relative endurance, but over time it begins to lose its former properties. The area above the battery is especially affected. This is where Nine owners most often notice the formation of rust;
A noticeable problem that many drivers face is the fuel tank floor;
Optics reflectors and a muffler also cannot boast of a long life without the appearance of signs of rust.

Corrosion is obvious
Corrosion is the main enemy of almost all domestic cars. Although anti-corrosion coatings are done quite well, time, weather conditions and the characteristics of our roads kill everything, rust actively begins to eat the metal and this problem must be dealt with.

Vehicle Owner's Manual

An experienced car owner can repair a VAZ 21099 with his own hands. To do this, you should obtain a car repair and operation manual. Now this book can be bought from other drivers or. In it you can find:

technical characteristics of the model;
types of faults;
repair options;
recommendations for use;
electrical circuits;
light bulb markings;
list of special fluids;
useful tips.

Motor

The VAZ 21099 engine is a simple and reliable mechanism that can perform its job properly for a long time. The owner is only required to carry out timely maintenance, changing the oil and filters.

The base model of the car was equipped with a 70 hp engine. and a volume of 1.5 liters. However, there were also small-scale modifications with a rotary engine, as well as with a less powerful 1.3-liter engine. The most popular models were those with fuel injection.

The introduction of a modern injection system made it possible to increase engine power without any intervention in its design. The operation of the engine itself has become more stable - the injector is not as sensitive to different gasoline as the carburetor. By replacing the obsolete carburetor injection system with an injector, it was possible to increase the engine power by 11 hp, which significantly increased the dynamism of the car.

Repair VAZ 21099 injector Main problems and their quick repair

A malfunction in the injection system indicates the need for repair of the VAZ 21099 injector

, as it leads to significant fuel consumption, a drop in engine power and unstable idle speed.
All this is easily adjustable on cars with a carburetor. But those adjustment manipulations that are performed on carburetors are fundamentally unacceptable for the injector due to the global differences between these two systems. Repairing a VAZ 21099 injector is complicated by the fact that the design of the injector itself does not provide for its adjustment. A wrench and a screwdriver are not the most commonly used tools for injector repair. But, strictly speaking, there is nothing to repair in the injector. The injector is controlled by electrical signals that come from a microprocessor
, and in order to issue them, it monitors signals from sensors installed on and in the engine. The only work that can be done on an injection engine to adjust it and stabilize its operation is flushing the injector, or rather flushing the injectors.

Injection diagram for VAZ 21099

The system for supplying the fuel-air composition to the cylinder block consists of the following functional elements

a filter for cleaning the air entering the engine system;
sensor for recording air consumption readings;
set of connecting hoses;
injector control boards;
gasoline filter;
gas tank;
pressure control devices in the system;
injector mounting frame;
nozzles;
top cover of the cylinder block.

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Injector flushing procedure

The contamination of injectors with tar deposits is primarily caused by the desire of companies that own gas stations to buy fuel cheaper and sell it at a higher price, and at the same time mix into it everything that increases the volume:

benzene;
sulfur;
water;
olefin;
sometimes it's just dirt.

The whole process is discussed in detail in the article:

"How to flush an injection engine yourself."
After consuming such a “cocktail”, a tarry coating forms
, which does not contribute to the normal operation of the engine. The procedure for cleaning the nozzles and flushing the injector will consist of the following manipulations. Before starting work, you need to stock up on special flushing liquid, new spark plugs and a syringe or powerful syringe. It is best to invite an assistant to perform this type of work. He does not need any qualifications in car mechanics; his task will be to maintain constant engine speed by pressing the gas pedal.

The manipulation algorithm is as follows:

Flushing liquid is mixed with gasoline in a volume of 1.5–2 liters;
connecting the intake manifold and the brake booster is disconnected
A mixture of gasoline and rinsing is introduced into the adapter using a syringe;
For the flushing mixture to react and clean the surface of the nozzle, it is enough to pause for 20 minutes. After this, the engine starts and idles. The speed must be constantly maintained with the gas pedal;
After injecting the flushing solution, white smoke will come out of the hose along with pieces of black dirt. It will be greater the less frequently the injector is washed;
It is best to inject the washing mixture In this case, the quality of washing will be higher. After injecting the entire volume of flushing, the engine can be turned off;
It is necessary to install new spark plugs only on a cooled engine, for which a certain time is allotted.

As a preventive measure, to reduce the degree of contamination of injectors, repair of the VAZ 21099 injector must be carried out every 5,000 km. mileage

, adding special additives with a cleaning effect to the gas tank as a preventive measure. It is strictly not recommended to use solvent as a cleaning agent, as it will simply corrode the silicone on the injectors.

Engine diagnostics

After purchase, absolutely any VAZ 21099 car needs to be taken to a service center for valve adjustment. The valve assembly is the weak point of this machine, and if the engine is many years old, then adjustments should be made as often as possible. In addition, at the same time it is worth measuring the compression and listening to the engine. If the car accelerates poorly, the following malfunctions are possible: wear of the piston group, burnt valves, or problems with fuel equipment. It is clear that if there is low compression or burnt-out valves, it will be necessary to do a major overhaul of either the entire engine or just the timing belt.

As for fuel equipment, it is easiest for owners of injection versions. It’s worth starting with computer diagnostics. Before going to the service center, you need to find the VAZ diagnostic connector. It is usually located behind the dashboard, just below the glove box. But there are times when it is placed in another place, for example, in the area of the passenger floor mat. In some cases, there is no connector at all or it is cut off.

Carburetor VAZ 21099

In order not to needlessly go to the service center, you will have to arm yourself with the electrical circuit of the injection “nine” and carefully inspect all the wires. If the VAZ diagnostic connector is found, you can try to diagnose it yourself by purchasing an additional cable and watching tutorials on the Internet. But it’s better to go to a specialist.

Owners of carburetor versions may be faced with the fact that, due to wear, it will not be possible to adjust the fuel equipment at all. There's nothing you can do about it; you'll have to replace the carburetor completely. But it’s better to spend money and buy an injector conversion kit. In the future, this will not only make it possible to quickly carry out diagnostics through the VAZ 21099 connector, but also spend less money on gasoline, make it easier to start the car in cold weather, etc.

Considering that engine repairs for such a car are inexpensive, it makes sense to immediately change the ignition. Install a new coil, good high-voltage wires, new spark plugs. Replace the timing belt, fuel pump and other elements that often break. By immediately investing in engine repair, you can drive for many kilometers without breakdowns.

Heart examination

Any edition of the manual says that the most important part is the engine. The driver knows that each vehicle has its own resource. In this case we are talking about 150 thousand kilometers. In most cases, the machine lasts longer, but proper care is important for this.

First of all, you must follow the maintenance rules. The manual provides detailed advice on when and how to change each part. You can handle almost all consumables with your own hands.

Car cosmetic repair

Like any other VAZ car from previous years of production, the 99th model may have problems with the condition of the body. The rusted areas will have to be digested; most likely, careful anti-corrosion treatment of the sills and bottom will be required. The weak point of this car is the doors. They constantly sag, their handles come off, their locks break. The only way to solve the problem is to spend a couple of days thoroughly refining them. Usually, owners strengthen the hinges, replace the cables with new ones, and replace the rubber seals.

Some new owners decide to soundproof the interior. After dismantling it, you can detect wiring faults and other problems. This stage of work is very important; during it, you can also replace the panel with a more advanced one (from a VAZ-2115), and diagnose the stove and dashboard. If you make an effort, the unpleasant noise of plastic when driving will disappear, and the car will become more comfortable.

External cosmetic repairs of the car are done at the discretion of the owner. Considering that a car, even with a very high-quality repair, will still look outdated, there is no point in bringing it to perfect beauty. It is better to spend time and money eliminating all technical faults.

Content

Injection diagram for VAZ 21099
Injector flushing procedure Algorithm

The injector is controlled by electrical signals that come from a microprocessor

, and in order to issue them, he monitors signals from sensors installed on and in the engine.

The only work that can be done on an injection engine to adjust it and stabilize its operation is flushing the injector, or rather flushing the injectors.

Carburetor repair VAZ 2109

Installing a carburetor in a VAZ 2109 car

If the car moves jerkily during the start and when accelerating, the carburetor is most likely clogged. Carburetor needs repair. Installation of the device in a car is shown in the photo. To troubleshoot you need:

Replace high-voltage wires under the hood.
Start the engine several times.
The engine will not start, but the carburetor will be cleaned well.
The wires are installed in their original position.
The engine starts.

Advice: If the carburetor is not cleaned after three attempts, it is better to use another method of troubleshooting.

The carburetor is removed from the car.
The element is blown out with compressed air. In this case, you need to get acquainted with the literature or contact a specialist.
In addition, all parts of the carburetor are washed after completely disassembling it.

These are just a few examples of how repairs and maintenance are carried out at VAZ. Any car owner can get acquainted with the repair of all components of a VAZ 2109 car by watching a special video.

Injector flushing procedure

benzene;
sulfur;
water;
olefin;
sometimes it's just dirt.

The whole process is discussed in detail in the article:
“How to flush an injection engine yourself.”

After consuming such a “cocktail”, a tarry coating forms

, which does not contribute to the normal operation of the engine.

The procedure for cleaning the nozzles and flushing the injector will consist of the following manipulations.

Before starting work, you need to stock up on special flushing liquid, new spark plugs and a syringe or powerful syringe. It is best to invite an assistant to perform this type of work. He does not need any qualifications in car mechanics; his task will be to maintain constant engine speed by pressing the gas pedal.

Algorithm

Flushing liquid is mixed with gasoline in a volume of 1.5–2 liters;
connecting the intake manifold and the brake booster is disconnected
A mixture of gasoline and rinsing is introduced into the adapter using a syringe;
For the flushing mixture to react and clean the surface of the nozzle, it is enough to pause for 20 minutes. After this, the engine starts and idles. The speed must be constantly maintained with the gas pedal;
After injecting the flushing solution, white smoke will come out of the hose along with pieces of black dirt. It will be greater the less frequently the injector is washed;
It is best to inject the washing mixture In this case, the quality of washing will be higher. After injecting the entire volume of flushing, the engine can be turned off;
It is necessary to install new spark plugs only on a cooled engine, for which a certain time is allotted.

As a preventive measure, to reduce the degree of contamination of injectors, repair of the VAZ 21099 injector must be carried out
every 5,000 km.
mileage by adding special additives with a cleaning effect to the gas tank as a preventive measure.

It is strictly not recommended to use solvent as a cleaning agent, as it will simply corrode the silicone on the injectors.

How to determine a malfunction in the engine

The main criteria for determining motor malfunctions are:

The engine will not start.
It works unstably and stalls at idle.
There is no full power during operation.
Connecting rod bearings knock at idle when the throttle valves are opened sharply.
A muffled piston knock that occurs when the piston “beats” in the cylinder.
Knocking noise from intake and exhaust bearings.
Low oil pressure when the engine is idling.
Increased oil consumption.
High fuel consumption.
Engine overheating.
Rapid drop in coolant level in the expansion tank.

Any malfunction requires periodic or major repairs of the VAZ 21099 engine.

Periodic engine repair

The VAZ 21099 car engine requires constant maintenance and maintenance of parts and components in good condition. This will increase the service life of the machine and the periods between major repairs. Main types of work:

Tightening the bolts securing the camshaft bearing housing.
Tightening the fastenings of engine components.
Periodic change of filters.
Change oil if necessary.
Adjusting the gaps between the camshaft cams and levers.
Idle speed adjustment, including exhaust gas toxicity control.
The condition of the piston system can be determined by checking the pressure in the cylinders.
Coolant level monitoring.
Replacing spark plugs.