Why does the Lada Granta engine not run smoothly and unstably?

Savings on interior

There are many shortcomings - mostly minor, but annoying - related to the interior. It is strongly felt that the manufacturer saved money on it. For example, the handle for adjusting the seat often breaks - it must be handled very carefully. And the gear lever cover is made of low-quality material, so cracks quickly begin to appear on it.

The interior of the car looks unconvincing: the upholstery is made of fabric, plastic is of low quality, the instruments are designed simply and are not durable. Considering the cost of the car, there is nothing terrible about this, what is much worse is that after six months, fragments of the interior begin to make various noises - everything becomes loose, and it is extremely difficult to deal with this. The door seals begin to let in a lot of dust, and this is also not very pleasant. Window regulators are prone to rapid breakdowns: when lowering the glass, jamming or squeaking is common.

Technical disadvantages

Operation of the new Lada Granta model in a short period made it possible to identify a number of design and technical flaws and weaknesses in the car and characteristic malfunctions of the car. What might a Lada Granta driver not like initially?

• The appearance of a car with a sedan body cannot be considered harmonious and proportional from all angles and colors. But this is a matter of taste.
• There is no engine temperature sensor on the dashboard. Despite the general tendency in the global automotive industry to replace such an indicator with a conventional LED indicator, it is necessary to take into account the climatic features of the large territory of Russia. Here, not only engine overheating is important, but also its current temperature, for example, at the initial stage of operation.
• Creaking body. On some examples of the car, assembly (or design) flaws begin to appear almost immediately. This is especially true for driving on dirt or country roads and when the road surface is damaged.
• The absence of ceiling handles, although not an obvious miscalculation, deprives passengers of an additional point of support and once again indicates the budget class of the car.
• Hard plastic in the interior decoration of the Lada Granta. Although this decorative element is made to last - there are no burrs or wide cracks - over time, all the weak points of the interior begin to creak. This is not so noticeable in comparison with other models, but the number of parts for the central part of the car is smaller here, and there are not so many contact points where squeaks could appear. One of the possible reasons for excess sound in the cabin could be the car windows, which is a sign that their installation in the door seals is not airtight enough.

• Incorrect operation of the climate system. Its rather high efficiency is manifested by an unexpected stepless transition from cold to hot mode, which has a negative impact on the interior materials. Changes in shape, distortions, and swelling of materials on the A-pillars and roof are observed.
• Installing a conventional fuel filler cap.
• Adjusting the headlights involves using a hydraulic corrector instead of the previously used electric one on the earlier model, Lada Kalina.

The second group of shortcomings includes assembly features, which also cannot be classified as positive manifestations of a new car. From these positions, the Lada Granta showed itself in such cases.

1. Severe fogging of the optics of external lighting devices and car windows. The reasons for such manifestations can be either blockage of ventilation ducts or leaking devices.
2. Plastic pipes of the air supply system and engine cooling system can be prematurely damaged due to strong clamping with fastening clamps at the mounting points.
3. The steering of the Lada Grant is not entirely clear. If it is in full technical condition, a certain amount of play in the steering wheel can be noted, which is more likely due to unstable operation of the engine than to the presence of mutual movement of the mechanism parts.
4. If door handles are used carelessly, they do not demonstrate the required reliability and durability.

Frequent gearbox breakdowns

When driving aggressively, the Granta's gearbox does not hold up for long: the gears begin to “die” one after another, the lever simply does not lock in the desired position. The first two gears usually fail first. The problem with the car is hereditary, it was typical for Kalina, but the manufacturer was never able to solve it - or did not want to.

The reasons for gearbox failure are failures of synchronizers and gears; again, it comes down to the desire to save money. If you drive quietly and don’t bounce on bumps, problems with the gearbox may not arise at all, but fans of fast driving should know that the gearbox on this car under their control is unlikely to last more than a year.

Characteristic weaknesses of Grants. Possible malfunctions and first breakdowns of Lada Granta

A lot of drivers preferred this budget sedan, which attracted attention with its affordable price. Surely you won’t have any problems in the first few kilometers, but after about 1000 km the first breakdowns appear. Having studied various forums, review sites and autoblogs, we were able to find out the weak points and difficulties that the owners of the Lada Grant had to face. The designers have already corrected the bulk of the diseases grants and you are unlikely to encounter them if you buy this model after 2013, but they still exist and can happen on used cars of the first batches.

Electrics

• On the first VAZ 2190 cars, the ECU floods (via the wiring harness). To avoid this disease, you need to clean the drainage holes under the hood more often and wrap the harnesses with electrical tape). Later the factory solved the problem.
• One of the most common problems in the first Grants is generator failure (alternator bearings or belt).

Salon

• The gear lever cover cracks and comes out from under the knob.
• Fragile seat adjustment handle.
• The airbag malfunction lamp is often an eyesore. The problem could be sensors in the belts, airbag control unit, or wiring.

Headlights

• The taillights are sweating.
• The rear lights have open and quite large holes on the side of the lamps, and in the future, all the dirt from the trunk will be inside the lights.
• Unreliable fastening of headlight covers.

Body

• The paint on the top of the door quickly wears off and rusts through improperly hung doors.
• The door lock often needs to be adjusted.
• The most common disease of Granta is rust, in doors under factory sound insulation, and corrosion also quickly appears on door opening limiters.

Chassis

• Knock in the front pillar (a feature of Saaz struts).
• The front suspension linkage extension bracket may burst.

Brake system

• Bad, low-quality brake pads (creak, squeal and wear out the brake disc). It is recommended to immediately replace the pads with high-quality ones after purchase.
• Unsuccessful fastening of the handbrake cable.

Cooling

• The thermostat may fail (the problem affects the first models before 2012).

Box

Howl in the gearbox, stiff gearbox when cold, freezing of the handle in the cold. In order to eliminate the problem, it is recommended to replace the oil in the box with synthetic 75w90.

Ask in the comments. We will definitely answer!

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Gearbox howl

The gearbox on Grant is generally problematic: even if all gears work, it is prone to “howling.” This shortcoming of AvtoVAZ cars is also a long-standing one and the automaker still cannot cope with it: for Vesta they had to use a French-made box. Granta was deprived of such luxury, so the transmission howl is still the same as in the old models, except that it was made a little quieter. If you have been accustomed to it for a long time, then it will not become a problem, but if you are not used to it, it can be very annoying.

Inability to gain power

Situations are also possible when the engine makes “heavy” sounds, which is accompanied by the inability to gain full power. And there are reasons for this.

If you purchased Granta new, then the problem may be its newness.

Until a break-in period of 6-7 thousand kilometers is completed, maximum power cannot be gained. Moreover, it is not recommended to increase the crankshaft speed above the 3 thousand mark for the first 2000 thousand kilometers.

Low pressure in the fuel system

If at high speeds it seems to you that the engine:

• does not develop enough power,
• It's like he's hitting a wall
• or when accelerating, “they throw extra weight into tow”

this indicates insufficient pressure in the fuel system. This could be due to a clogged fuel filter. In this case, diagnose and replace the fuel filter.

Bad fuel (gasoline)

The loss of power may be due to low quality fuel, in other words, when you were filled with “badyagu” under the guise of 92 or 95 gasoline. Often, gas stations dilute gasoline with water, or use special “Chinese” cheap additives to increase the octane number of low-grade fuel. In the worst case scenario, you will have to drain all the gasoline from the tank and fill it with new one.

Electronic gas pedal glitches

As in the previous case, the problem may relate to a malfunction of the electronic gas pedal . In addition, there is a chance that the pressure in the ramp is not high enough. The solution to these two problems can be found in the previous section.

The engine will not be able to gain power because the valves are clogged or the spark plugs do not operate stably enough, as a result of which some strokes “skip”.

Insufficient compression

In addition, do not forget about the possibility of low compression in the cylinders, which is less than 1.0 MPa. To find out the reasons for this phenomenon, it is necessary to disassemble the motor. This will make it clear whether the cylinder head gaskets or pistons have burned out, or whether the piston rings have broken or stuck. Among other things, the cause of such compression may be poor adjustment of the timing valves. If the engine has already covered a sufficient mileage, then we are talking about natural wear and tear on the engine components.

On an 8-valve Lada Granta engine, it is necessary to measure compression only after adjusting the valves!

The compression on the Lada Granta should be at least 12-13 atmospheres. If it is more, about 15, then most likely it is necessary to replace the oil scraper rings. If the compression is less, the engine is worn out, it needs to be repaired, it will not develop sufficient traction!

Compression gauge - it is used to measure the compression in the engine

Problems with directional stability when driving fast

Another reminder that this car is not intended for reaching high speeds: at speeds over 120 km/h it begins to have problems with directional stability, and the faster you accelerate, the more serious they will be. The car literally starts to sway from side to side even on a straight line, on a good road - and it’s quite difficult in turns or on an average surface. Interestingly, loading improves stability, so you can accelerate a little faster with passengers.

Unstable engine operation

If the engine runs unstably and stalls when idling, then there are reasons for this. It is quite possible that we are talking about insufficient pressure in the ramp. We also talk about the difficulties in the functioning of the electronic gas pedal.

In the first case, it is worth checking the pressure regulator. Just keep in mind that in new Lada Granta models this regulator may be located in conjunction with the fuel pump. As for the second situation, the check should concern the electronic part of the car, including the power unit adjustment system.

Air supply problems

The problem may also be that there is an air leak in the system. It may be located on the crankcase ventilation hose that connects the inlet pipe to the brake booster. You should carry out additional tightening of the fastening clamps. And, if the need arises, the hoses must be replaced with new ones.

If the problem concerns violation of valve clearances, then the solution requires contacting a service station.

If you own a Granta with an 8-valve engine, it is worth adjusting the timing valves every twenty thousand kilometers.

Or it could be different. If the air filter is clogged, it will be more difficult for air to get through and an overly rich mixture will flow into the injectors. In this case, diagnostics and replacement of the air filter is necessary.

Spark plug

The problem could be the spark plugs.

And, of course, the reason may relate to a malfunction of the ignition system. We are talking about the source of the problem in the form of spark plugs or individual coils. If you have localized the source of the breakdown, then the faulty part must be replaced. On 16-valve engines with ], AU17D[/anchor] spark plugs are installed.

More details in the materials:

• selection and replacement of spark plugs on the 8-valve Lada Granta
• selection and replacement of spark plugs on a 16-valve Lada Granta

An indirect factor that may indicate problems with the spark plugs is increased fuel consumption. However, increased consumption may also appear for a number of other reasons; for more details, see the material: reducing the fuel consumption of a Lada Granta car.

Unreliable braking system

Although there is another argument against driving fast on the Grant: its brake pads cannot boast of quality. They often begin to make squeaks and squeals, and the discs quickly wear out. And this is already very serious; such a problem can easily be considered one of the main ones. Another drawback related to the brakes: the handbrake cable is secured inconveniently, you will have to get used to it.

conclusions

As a rule, improper engine operation is observed for several main reasons. These include the natural deterioration of individual parts, failure to break in the engine, a problem with the fuel line or with the electrical system. In any case, it is necessary to carry out a complete diagnosis, which would allow the problem to be localized and eliminated. If possible, this should be done at a certified service station.

If you do the work yourself, you will need to acquire an electronic error reading system that connects to a computer.

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