UAZ vehicles break down quite often. However, there is an opinion among users that, no matter what kind of malfunction occurs associated with such a car, it will always be able to reach the exact destination, and after the road you can spend repair work. UAZ car owners jokingly call them a legendary historical SUV.

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Machine for strong men

Of course, the "Russian jeep" does not have an attractive appearance, such as modern vehicles, however, is quite durable. In addition, the car has high technical and, as a result, operational characteristics.

In the modern vehicle market, it is impossible to find a unit that would correspond in its properties and qualities to the well-known UAZ "Patriot". If we talk about the price characteristics of such a car, then, probably, alternatives is practically non-existent today. That is why users with particular zeal acquire such a vehicle for various purposes.

Traditionally, the car has a simple appearance, comfortable performance features, affordable price range and can pass on any road surface. In other words, using the UAZ "Patriot", you should not think about how many holes, stones, potholes or curbs are on the road, since such a car will pass always and everywhere.

Despite the vast number of various advantages of such a car, users and motorists do not hold back their claims to it. Unfortunately, various breakdowns or so-called childhood illnesses repeatedly occur, which can be corrected by carrying out repairs or by replacing certain parts. Let's take a closer look at the main malfunctions and its possible options their elimination.

Loose loops

There is an opinion that the reasons associated with sagging hinges in UAZ vehicles come from the primary models of such a unit. They were fitted with canvas roofs. As you know, the previous model of the car with a canvas roof did not subject the hinges to high loads. However, during the modernization, the doors of the unit became much heavier. That is why the hinges do not withstand such a load.

Naturally, many parts were replaced in new cars, but the hinges were never upgraded. Thus, vehicle owners observe a situation where, during prolonged use of the vehicle, they begin to sag, thereby violating the overall geometry. Subsequently, such a malfunction can lead to various unforeseen situations related to the car body.

Competent and professional specialists of service centers claim that the owners of UAZ “Patriot” vehicles were able to independently solve the problem associated with loops. For example, many owners are trying to unload the doors in order to transfer the bulk of the weight to the body of the unit. To carry out such an action, it is necessary to install a specialized unit that will allow you to transfer the spare wheel to the car body. In fairly common situations, owners approach drastically to solving such a problem. They install specialized aluminum pads under the lower hinges of the door. In the future, this does not allow them to sag or deform.

Manufacturers also paid attention to such criteria, so in 2015 UAZ Patriot cars were produced with reinforced hinges, which allows owners to use the unit without undue problems. However, it is important to note that this variation of the car, released in 2015, is also equipped with a specialized upgraded axle installed near the hinges. back door.

Body corrosion

These problems are quite typical for many vehicles, but UAZ vehicles are most susceptible to such a malfunction. Owners repeatedly turn to specialized salons in order to correct the situation by applying any logos, emblems in places where corrosion occurs.

Competent and experienced specialists of service centers can fix such a problem, but manufacturers also did not leave it unattended. Since 2014, UAZ Patriot vehicles have been produced using innovative technology. This allows you to use the most high-quality and technologically advanced paints and varnishes that serve for many years.

Fuel hose malfunctions

Every second owner of this vehicle faces this problem, however, manufacturers do not confirm the presence of malfunctions in a car of this brand.

If there are various traces indicating chafing of the fuel hose, it is necessary to replace this part. It is important to note that many spare parts initially have certain defects. Experienced Specialists service center recommend that the owners of the UAZ "Patriot" pre-inspect the components so that later there are no unforeseen situations. If the fuel hose is replaced in a service station, then the specialists independently examine the part and install it according to the existing scheme, which is provided by the manufacturer.

Wiring faults

For cars of the UAZ "patriot" brand, various malfunctions associated with wiring are quite characteristic. Repeatedly, users observe how the car turns on high or low beams, wipers and other devices at will. Fortunately, this serviceability is not found in every vehicle.

Vehicle wiring done according to the latest innovative technologies. However, in different situations, depending on the place of assembly of the unit, non-standard types of wiring can be fixed, which leads to various malfunctions.

It is recommended that in the event of a breakdown, contact experienced specialists at the service center so that they check the various wire connections. A professional approach will eliminate the consequences of incompetent assembly. Thus, the user will save himself from many problems.

Bearing wear

Wheel bearing wear is a fairly common disease for many vehicles, including UAZ Patriot. There is an opinion that manufacturers use low-quality parts, as a result of which the owners of the unit at an early stage of using the car are faced with such a malfunction.

Experienced service center experts claim that wheel bearing wear occurs due to the fact that the user does not operate the vehicle correctly or does not follow the maintenance schedule. To avoid such problems, all maintenance recommendations must be followed. It is necessary to change the lubricant in a timely manner and contact the service center to identify a wide range various malfunctions or malfunctions in the overall functioning of the vehicle. If you do not neglect the rules of maintenance, then every owner of a domestic SUV can avoid excessive wear.

Chassis malfunctions

When it comes to a variety of malfunctions of the Patriot, the owners talk about the wear of specialized kingpin liners front axle. This is usually due to difficult operating conditions. Often the owners of the unit buy a vehicle in order to move off-road, so it is important to ensure the optimal functioning of the chassis this car. There are a number characteristic faults when the front axle kingpins fail. In this case, it is enough to contact the competent and competent specialists of the service center. Professionals in a short time will help to eliminate the malfunction and carry out the appropriate Maintenance considering gap adjustment.

In other words, the UAZ "Patriot" is the best vehicle for off-road driving. The main thing - do not forget that any unit requires care. It is important to regularly contact experienced professionals who will be able to identify faults and fix them in a short time without harm to the car owner himself.

Frequent malfunctions of the "Patriot"

When starting the engine, the crankshaft does not rotate:

– unreliably connected or oxidized terminals of the accumulator;
– the accumulator is discharged or is faulty;
– Violation of the integrity of the electrical wiring in the starter circuit;
– the traction relay of a starter is faulty;
– the starter is faulty;
- the teeth of the starter drive gear or the teeth of the ring gear - flywheel are worn out;
– Disconnected engine ground bus on the car body.

The crankshaft rotates but the engine does not start:

– there is no fuel in a tank;
– the accumulator is discharged (the crankshaft rotates very slowly);
- the battery terminal is not securely fixed or oxidized;
– elements of the ignition system are damaged ( gasoline engines);
– the wrong backlash in spark plugs (gasoline engines);


- faulty solenoid valve blocking the fuel supply (diesel engines);
– air in the fuel system ( diesel engines);
- Mechanical failure of the gas distribution system.

Unstable start of a cold engine:

– the accumulator is discharged;
– unreliably connected or oxidized battery terminals;
- failure or incorrectly adjusted interelectrode gaps in candles (gasoline engines);
- system is faulty preheating(diesel engines);
– the system of injection of fuel (gasoline engines) is damaged;
– Damage of system of ignition (petrol engines);

Intermittent starting of a hot engine:

– Damage of system of injection of fuel (gasoline engines);
– low compression in cylinders.

When the starter is turned on, there are extraneous noise:

– teeth on a gear wheel of a starter or a ring gear of a flywheel are worn out or broken;
– there are no or unreliably tightened bolts of fastening of a starter;
– Worn or damaged parts of the starter.

Stopping the engine after starting:

– unreliable connection of elements of system of ignition (gasoline engines);
– air leakage in the injection system or intake manifold(gasoline engines);

Unstable engine operation Idling:

– the filtering element of the air filter is dirty;



– camshaft cams are worn out;

– Damage of system of injection of fuel (gasoline engines);

Idle Misfires:

– the interelectrode gap is incorrectly adjusted or spark plugs are worn out (gasoline engines);
– defective high voltage wires(gasoline engines);
– air leakage in the injection system, intake manifold or hoses (petrol engines);
– Damage of system of injection of fuel (gasoline engines);

– Uneven or low compression in cylinders;
– Disconnected or leaky crankcase ventilation hoses.

Misfiring throughout the engine speed range:

– polluted fuel filter;


– air leakage in the injection system, intake manifold or hoses (petrol engines);
– the interelectrode gap is incorrectly adjusted or spark plugs are worn out (gasoline engines);
– The ignition coil is faulty (gasoline engines);
– the nozzle is faulty (diesel engines);
– the distributor breaker cover is faulty (gasoline engines);
– Uneven or low compression in cylinders;
– Damage of system of injection of fuel (gasoline engines).

Engine vibration during acceleration:

– the interelectrode gap is incorrectly adjusted or spark plugs are worn out (gasoline engines);
– air leakage in the injection system, intake manifold or hoses (petrol engines);
– Damage of system of injection of fuel (gasoline engines);
– the nozzle is faulty (diesel engines).

Unstable engine operation:

– air leakage in the injection system, intake manifold or hoses (petrol engines);
– the fuel filter is hammered;
– Malfunction or low pressure of giving of fuel by the fuel pump (gasoline engines);
- blocked drain hole fuel tank or fuel lines
– Damage of system of injection of fuel (gasoline engines);
– Injectors are faulty (diesel engines).

Low engine power output:

– the gear belt of a drive is incorrectly established;
– the fuel filter is hammered;
– Faulty or low fuel supply pressure by the fuel pump;
– Uneven or low compression in cylinders;
– the interelectrode gap is incorrectly adjusted or spark plugs are worn out (gasoline engines);
– air leakage in the injection system, intake manifold or hoses (petrol engines);
– the system of injection of fuel is faulty (gasoline engines);
– nozzles are faulty (diesel engines);
- Incorrectly set fuel injection timing fuel pump(diesel engines);
– Jamming of brakes;
- Clutch slip.

Backfires in the engine:

– the gear belt of a drive of the mechanism of gas distribution is incorrectly established;
– air leakage in the injection system, intake manifold or hoses (petrol engines);
– Damage of system of injection of fuel (gasoline engines).

Low oil pressure in the engine:

- low oil level or wrong grade;
– The gauge of pressure of oil is faulty;
– The bearings of the engine or the oil pump are worn out;
- engine overheating;
– the safety valve of pressure of oil is faulty;
– polluted strainer oil receiver.

The engine is running after the ignition is turned off:

- engine overheating;
– Damage of system of injection of fuel (gasoline engines);
– the electromagnetic valve of a stop of the engine (diesel engines) is faulty.

Noises in the engine

Detonation in the engine during acceleration:

– the angle of an advancing of ignition is incorrectly established (gasoline engines);
– the type of spark plugs does not correspond to the required one;
– low octane number of fuel;
– air leakage in the injection system, intake manifold or hoses (petrol engines);
– excessive soot in the combustion chambers;
– Damage of system of injection of fuel (gasoline engines).

Whistling or wheezing noises:

– the inlet collector or a laying of a throttle (gasoline engines) is not tight;
– Leaky exhaust manifold gasket;
– Vacuum hoses are leaky;
- A blown cylinder head gasket.

rattling noises:

– worn out valve train or camshaft;
– wear of auxiliary elements of the engine (water pump, generator, etc.).

Detonation or dull noises:

– Bearings of the bottom head of a rod are worn out (noise decreases under loading);
– Main bearings are worn out (noise increases under load);
– Impacts on the piston (especially on a cold engine);
- Auxiliary elements of the engine are faulty (water pump, generator, etc.).

About the book: Management. Edition 2002.
Book format: djvu file in zip archive
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Language: Russian
The size: 5.1 mb.
Download: free, without restrictions and passwords

Electrical equipment of UAZ vehicles. Device, troubleshooting.

Given various schemes connection of electrical equipment elements UAZ-469, UAZ-31512, UAZ-452, UAZ-3741 and their modifications, the procedure and sequence for determining many faults, as well as others helpful tips for diagnostics and repair of electrical equipment of UAZ vehicles. Designed for individual owners. It may also be useful to specialists involved in the repair of electrical equipment.

During the operation of UAZ vehicles, various malfunctions of electrical equipment may occur. Some of them affect technical condition of the car, cause interruptions or failures in the operation of the engine, starting system, lighting and signaling devices, others, although they do not affect the performance of the main units of the car, create inconvenience for drivers.

Finding any of these faults, especially for inexperienced drivers, often becomes an intractable problem and takes a lot of time. This book is designed to help UAZ drivers to master the design and operation of electrical equipment, as well as quickly find a malfunction in them using simple and visual diagrams.

Since 1972, UAZ-469 has been mass-produced in three versions: UAZ-469, UAZ-469B and UAZ-469BG. Introduced since 1985 new system indexation of models and in accordance with it, the UAZ-469 became - UAZ-3151, UAZ-469B - UAZ-31512, and the medical modification of UAZ-469BG became - UAZ-3152.

Since 1985 construction model range 3151 was repeatedly improved, new engines were installed, the transmission was modified, optional equipment, as a result of which new modifications appeared - 31512, 31514 and 31519.

UAZ cars are considered the most versatile and practical vehicle. Many residents of our country choose these domestic cars. Cars of this brand have one indisputable advantage - it is really possible to repair UAZ on your own.

Ulyanovsk car factory manufactures vehicles off-road. In wartime, the ZIS-5 was made here, and when the war ended, the GAZ AA lorry was made. Since the mid-1950s, the production of the GAZ-69 began, and the first independent development of the plant was the UAZ-450, the ancestor of the famous "tablet". Then, for a very long time (more than 30 years), mass production of the "goat" - UAZ-469 was launched. The cargo UAZ-3303 also found its admirers among consumers. Almost all of the above machines can be repaired with your own hands.

The main breakdowns of UAZ cars

The work of a master in a car service

The simplicity and maintainability of UAZ vehicles have always been highly valued by those who bought them - rural residents, off-road enthusiasts, army men. Operation of the UAZ 469 is possible at any time of the year, in any climatic and road (or off-road) conditions. The biggest load falls, as a rule, on the engine, clutch and suspension. Spare parts for these units can be found without problems.

The engine of UAZ cars often overheats, especially if you drive off-road. This, in turn, leads to the destruction of the pistons and cylinder liners. As a result, many motorists have to change power unit assembled. To make it easier to restore the UAZ 469 with your own hands, you can use the repair manual. So motorists will be sure of the correctness of their actions when replacing failed vehicle parts.

Typically, the repair of UAZ vehicles is associated with the replacement of body elements and its alteration. Motorists who decide to repair their car on their own should always remember that such operations require certain calculations and skills, since the rigidity of the body after repair should be the same. In addition, it is advisable to arm yourself with special electrical equipment circuits, they will always come in handy. Having studied the diagram, it will be possible to understand which wires the equipment is powered by, which ones it is connected to. If there are difficulties with this, it is better to entrust the restoration of the working capacity of your car to experienced specialists.

You can always repair, for example, UAZ 390995 by watching the corresponding video. Proper restoration of UAZ Hunter and other models of cars from the Ulyanovsk plant will extend the life of the vehicle.

Separately, it is worth noting the repair of mufflers for UAZ cars. The location of the part is considered very inconvenient. If you have to drive off-road for a long time, the muffler, as a rule, just pulls out.

Engine parsing

UAZ vehicles are reliable, they excel in harsh Russian conditions. Even the primitive-looking UAZ "tablet" is capable of great feats. But he will need frequent repairs, including engine restoration.

Some issues can be dealt with on your own. For example, if the engine does not start, you need to flush the sump of the fuel tank with gasoline and blow it out compressed air. If the engine overheats, it is necessary to check whether it has enough coolant.

During the operation of UAZ vehicles, other engine problems may occur. It is worth disassembling the motor only if the following factors are present:

• engine power is reduced;
• increased oil consumption;
• lubricant pressure decreases;
• motor smokes;
• knocking or noise is heard;
• significantly increases fuel consumption.

When removing the engine, you must follow the standard regulations. First you need to install the car above the inspection hole, fill in oil and coolant. Then you have to remove air filter and disconnect the muffler intake pipe. After that, disconnect the oil cooler hoses, heating and cooling systems. Next, the radiator is removed. Then you need to disconnect the damper drive rods from the carburetor and all electrical wires from the engine. The next step is to disconnect the clutch release cylinder, unscrew the mounting bolts. It remains only to disconnect the gearbox, and then remove the engine itself. At the same time, the gearbox transfer case must remain on the frame. When installing the motor, all steps are performed in reverse order.

Some repairs you can do yourself

You will need special tools to disassemble the engine. It is easiest to disassemble it on a rotary stand. It is necessary to start work with a thorough cleaning of various contaminants. After the motor has been disassembled, it is necessary to degrease and clean all its parts from carbon deposits. You can do this, for example, mechanically. Then the rubbing surfaces must be lubricated with engine oil.

It is desirable to install one-piece connections on nitro-lacquer, and threaded parts - on minium. A torque wrench is best for tightening bolts and nuts.

All new UAZ Patriot models are equipped with an ECU at the factory. This allows the vehicle systems to work with higher accuracy, as well as to diagnose components using standard tools. If the car is not equipped with an on-board computer, you can purchase one and install it yourself. At the moment, two main types of BC are most common: Prestige and Multitroniks. These models allow you to read the main types of computer errors and display them on the display.

By default, all errors that occur during operation electronic systems are recorded in the ECU log and can only be viewed with the help of special equipment at the service station. The most critical ones are displayed on the control panel as a CheckEngine icon. In this case, the vehicle usually exhibits serious malfunctions and requires emergency repairs. Installation of BC allows you to solve minor problems in a timely manner, without leading to breakdowns. In addition, at on-board computer there is a function to reset some errors. They sometimes occur during the operation of the car, but are insignificant and do not require elimination, but as a result, some systems may be disabled.

Error codes

Consider the algorithm for working with BC using the example of the Prestige device line. To display the system status on the display of the device, enter the MAINTENANCE menu and select the ERRORS / DIAGNOSTICS section. When codes appear, you can read them or reset them.

Group 04

• 0420 - indicates a malfunction of the catalyst. It is most likely clogged and interferes with the normal exit exhaust gases. Most often occurs with Euro 2.3 and 4 engines.
• 0443 - malfunctioning adsorber valve
• 0445.0444 - short circuit of the absorber valve wiring
• 0480 - problems with the operation of 1 fan
• 0481 - malfunction 2 fans

Group 03

These codes basically describe ignition system problems. Among them, the most common are:

• 0301-0304 The error number corresponds to the number of the cylinder that has the misfire. The usual reason for the appearance is clogging, incorrectly set clearance, and so on.
• 0327 - Incorrect operation of the knock sensor
• 0335 - crankshaft sensor malfunction
• 0340 - phase sensor error. Usually appears as a result of oxidation inside the sensor. To fix a malfunction, sometimes it is enough to remove it and rinse it with a special rust converter. The element is located on the cylinder block. If after cleaning the error repeats, this indicates its failure.

Group 01

This series of codes is responsible for malfunctions of a large number of sensors, for example:

• DMRV;
• coolant temperature.

The most common is p0106. It signals a malfunction of the intake manifold pressure sensor. There are several main reasons for its appearance and ways to eliminate it:

• Oxidation of contacts, in this case it is necessary to treat them with a solvent or a special spray.
• Blockage in the air supply pipe. In this case, in addition to special flushing agents, for example, for carburetors, use a steel cable for mechanical cleaning. At the same time, its thickness should not exceed 0.8 mm.

After fixing the problem, the error must be reset and checked if it reappeared after starting the engine. If it occurs again, check the electronic components or perform a more thorough cleaning.

Useful video:

Error 0704

May be due to a problem with the clutch. The ECU can read an error if the pedal switch breaks. One reason could be a weakened return spring. It is necessary to check the entire node and only then reset the BC.