Despite the huge amount of criticism against the Lada Priora, this is one of the most popular cars that have come out of the AvtoVAZ assembly line in recent years. The Priora is equipped with a fairly successful engine with good dynamics, and the interior is very comfortable. And the maximum trim levels offer useful options. But at the same time, from time to time the car brings minor problems to its owners. One of the most popular malfunctions is that the Priora engine (16 valves) is tripping. The reasons for this phenomenon are quite unpleasant. And besides, the motor eventually overheats.
When the driver starts his car in the morning, the engine does not run smoothly as before, but intermittently. At this time, dull sounds are heard from the exhaust pipe. At the same time, a persistent and strong smell of unburned fuel is felt. Vibrations are constantly increasing, and this is fraught with cracks in the pillows. This is how the engine runs when cold.
Trouble the engine: why is it dangerous?
This is a rather critical phenomenon, especially if the unit begins to vibrate during acceleration.
This behavior of the engine is especially dangerous when the driver decides to overtake, but there are cars in the oncoming lane. In the process, while the motor is running, the engine power is significantly reduced. The compression ratio decreases - there may not be enough dynamics to successfully complete the maneuver.
Considering that the Lada Priora has been manufactured since 2007, there are often instances where the engine knocks like on an old car 20 years ago. This is an engine running on three cylinders. It may have the latest firmware, but if the engine of a Lada Priora car is running rough and the check light is on, then such a car will not have much life left.
Possible reasons
Why the check light on the Priora is on, but the engine is running normally - we will try to find out further. To find the reason for the blinking indicator, it is advisable to contact a service station, where specialists will carry out diagnostics and find out the code and specifics of the problem. In different situations, the indicator may light up due to minor defects in a particular car system.
The main factors for the check to catch fire can be the following options:
- If the sensor lights up only while the Priora is driving, you should pay attention to the oil level. If this indicator is normal, it is advisable to change the oil after first checking the engine for defects and damage (if possible in a specialized center);
- The reason for the blinking of the indicator may be low-quality fuel that floods the spark plugs;
- If the engine runs normally but the check light is on, the problem may be the fuel filter or fuel pump. By replacing the appropriate filter elements, you can get rid of the problem;
- If there is no spark from the ignition coil, the check engine may also be activated;
- Faulty high voltage wires can activate the light bulb. They need to be checked and replaced if necessary.
Supply system
If the Priora engine (16 valves) is tripping, the reasons may be trivial. When there is no flash in the cylinder, perhaps there is simply no fuel there. If it has a normal compression ratio, it is worth diagnosing the power system. You should pay maximum attention to the air filter and the pipe. It is necessary to make sure that the clamps are securely tightened, whether the purifier body itself is intact, and whether there is any air leakage from the outside. Also pay attention to the tubes. They must be tightly secured to the throttle assembly. Fuel leaks, cracks, and broken plastic may indicate that some parts are faulty.
THE MOST COMMON REASONS WHEN THE CHECK ENGER LIGHT COMES ON ON A PRIOR
But the Priora has the most common breakdowns. To begin with, it is worth listing the main sensors included in the Priora ECM.
- Mass air flow sensor (MAF).
- Throttle position.
- Camshaft positions.
- Crankshaft.
- Knock sensor.
- Oxygen sensor (2 pcs.).
- Speed.
- Rough road sensor.
And also the actuators can make the “Check” light up.
- Idle air control (IAC).
- Fuel injectors (4 pcs.).
- Ignition modules (4 pcs.).
- Canister valve.
- Electric fuel pump.
All these components are activated through the computer, and therefore, if their operation fails, the “Check” light immediately lights up.
MOST COMMON ECU ERRORS THAT CALL THE “CHECK LIGHT”
In the first place, of course, there will be malfunctions of the oxygen sensor. These devices are installed in the exhaust manifold (sensor No. 1) and after the fuel afterburner (catalyst), No. 2. They read the percentage of CO content in the exhaust gases. Due to soot from burnt fuel, they most often deteriorate. The car begins to lose power, the “Check” light comes on. After all, the computer receives a signal that there is too much fuel.
Alas, it is only possible to accurately determine the reason why the signal may have come on using software diagnostics.
On the second place, the mass air flow sensor deservedly stands. A thin thread made of a special alloy changes resistance depending on the amount of air passing through the nozzle. The malfunction is characterized by severe engine malfunction. The speed “floats”, the power drops, and, of course, the “Check” light comes on. And also the check is only done through diagnostics through the program.
And the camshaft sensor closes the top three. Its malfunction is characterized by an increase in startup time. Sometimes there may be slight jerks when accelerating. Again, there is no way to determine a breakdown without a program.
PRIORA ACTUATORS
Here in the first place is the IAC, a device that regulates the supply of additional air bypassing the throttle valve. It works by means of a micromotor that extends and retracts the shutter mechanism. If there is a malfunction, the engine will not start at idle. Or, conversely, it increases the speed to 1500-2000. "Check" lights up
Then the ignition modules. When it fails, the motor “troubles” and the speed “floats”. Power is lost. And as a result, the “Check Anger” icon lights up.
Faulty injectors give similar symptoms. It is interesting that all breakdowns of actuators, with certain skills, can be diagnosed without a computer. At least they will make the “Check” signal light up. This is done by either replacing it with a known-good unit, as with IAC, or by replacing it in places, as with ignition modules or injectors. And only the adsorber valve requires connecting equipment.
Attention! Many people believe that you can simply reset the errors if the “Check” light comes on on the Priora by removing the battery terminal. However, this will not fix the problem
>RESULT
So what can we say. There is only one conclusion. If the “Check” indicator light on the instrument panel lights up, you need to do computer diagnostics in any case. This is the surest way out.
Nozzle failures, clogging
When the Priora engine (16 valves) fails, the reasons often lie in the injector.
It may be faulty or simply blocked. Beginners and those who like to pour various injector cleaning fluids into the tank often encounter this problem. All this leads to the fact that the dirt first peels off in the tank, then in the fuel line. And eventually it will end up in the injectors, where it will happily get stuck.
Other engine and system malfunctions
- Compression in the engine cylinders is low.
- The cylinder head gasket is damaged.
- The engine control system is faulty.
- The valves of the gas distribution mechanism are burnt out and leaky.
- The exhaust system is leaking.
- The valve clearances are not adjusted (8-valve engines only).
- The hydraulic pushers are faulty.
- The engine air filter is dirty.
- Vacuum hose connections are leaking.
Have you encountered power failures or observed unstable engine operation? What was the reason? We solve similar power unit problems in the comments or on the forum. Let us remind you that along with misfires, other engine malfunctions may appear, for example, floating speed.
Found an error? Select it and press Ctrl+Enter..
Poor quality fuel
This is one of the possible reasons why the engine stalls at idle or while driving.
To return to normal operation, you can try changing the gas station. This usually helps clear up a lot of misunderstandings. It is better to fill the 16-valve Priora engine with good 95-octane gasoline. It's not worth pouring something with a higher octane number. This will only lead to overheating. You can also try replacing the air and fuel filters. Sometimes this solves the problem.
What to do when the Lada Priora engine troits
Repairing a Lada Priora
in artisanal conditions depends on the cause of the malfunction:
- If the combustion of the windings of the injector parts is to blame, remove the cover, and then remove the manifold. Assess the condition of the windings and measure the resistance using a multimeter. The best resistance level is from 11 to 15 ohms. At the lowest level of values, the winding must be replaced.
- If the resistance indicates normal characteristics, remove the fuel rail and thoroughly wash each part with water. However, it is harmful to take on a deficiency in this category if you do not have the ability to repair it - be as careful as possible. For flushing to be successful, open the valves suitable for the nozzle, and then apply an aerosol-type flush under pressure.
- If you have doubts about fuel, completely drain the old one and fill the engine with 8 or 16 valves of 95 gasoline. A high octane number is not advisable; on the contrary, this option may lead to overheating of the engine. If changing gasoline does not help, then change the air and fuel filter units.
- How to check if a spark plug is working properly? It’s actually simple - let the car cool down well, otherwise, when you start unscrewing the elements, you can get a severe burn. After switching off, after just a little ignition, the faulty spark plug will be moistened with gasoline. Also see if the candle can create a spark.
If it is impossible to repair the spark plug so that the engine stops firing, it is completely replaced, and it is not at all necessary to go to 100. Armed with a 10-12 key, turn off the elements responsible for the ignition. Then carefully clean the spark plug from dust, otherwise debris may get into the Lada Priora
.
A tire compressor is suitable for this procedure; in the latter case, a brush. Then remove the spark plug with a spark plug wrench, where the head with the gasket is certainly fixed. New devices are installed with the same screwing.
Car owners know that if the light is on on a Lada Priora, then it is better to deal with this problem promptly. The reasons why the Check Engine light is on may vary. If the light is on on a Priora, it is better to contact a service center to determine the cause of the breakdown, but you can figure it out without involving third parties.
Ignition system
An experienced car enthusiast who is faced with an engine running on three cylinders immediately begins to diagnose the spark plugs. The Lada Priora must cool well, otherwise there is a risk of getting burned when unscrewing it. If after a few seconds you turn off the ignition and check the spark plugs, one of them will be wet with gasoline. It is also recommended to separately check each part for the presence of a spark.
In case of malfunction, the problem is solved by replacing the spark plug. Sometimes it is enough to press down a potentially faulty one with a cap and the machine will resume normal operation. In general, the ignition system in this car is the most problematic part. If the Priora engine (16 valves) is malfunctioning, you can look for the reasons for a very long time, and diagnostics will not yield anything, even if it is done correctly. And only by replacing all elements can a positive result be achieved.
Operating principle of vehicles with ECM Electronic engine management system
Lada Priora Sedan Logbook Preparing for winter.
Starter Cars with a conventional carburetor engine have been replaced by cars in which fuel enters the cylinders through a system of nozzles (injectors). And sparking occurs not in the distributor (distributor), but in a special ignition module. This rather complex system is controlled by a special intelligent unit. You could say it's a computer. It is he who sends signals to trigger all actuators. Therefore, the entire ECM system can be divided into three parts.
- Computer (ECU).
- Actuators (injectors, spark generators, etc.).
- Sensors (Air, oxygen, throttle opening, crankshaft position, etc.)
Diagnostics of spark plugs by plaque
When the engine starts cold or hot, you can check the carbon deposits on the spark plugs. If the coating is white, then this indicates a lean mixture and overheating of the engine. A black tint indicates a rich mixture. In both the first and second cases there are problems with the operation of the electronics. This is either installing new firmware, or replacing the ECU. A normal candle has a brick color. By the way, the engine may stall at idle if the part is damp. This also significantly increases the warm-up time. In addition to the spark plugs, the ignition coil may also be acting up. Priora (8 valves) is equipped with distributor ignition. Overheating of the coil is often observed. You can restore the operation of the motor by simply replacing the element.
Check engine error on Priora
Lada Kalina Hatchback MyLittleFriend Kalinich Logbook Floating speed or Replacing the idle air control
The reasons why the check light on the Priora came on could be:
- incorrect composition of the combustible mixture;
- problems with spark plugs;
- problems with engine speed readings and much more.
Don’t be afraid of the error light shining when you start the engine - this is normal in a Priora! But if the check does not go out for some time with the engine running, you should think about a possible problem.
Let's look at the most common problems that a check may indicate:
The error only appears when the vehicle is moving. In this case, it is recommended to check the engine oil level; it may be very low. If the oil level is insufficient, it should be replaced as it may lose its lubricating properties. In addition, it is worth inspecting the power unit for damage and defects. It is advisable to entrust the inspection of the engine to a qualified technician at a car repair shop. The Check engine light is flashing. Listen to the engine, maybe it's running rough? This fact sometimes causes misfires of the spark plugs.
Pay attention to the gas station where you last refueled your car. The reason may lie in low-quality fuel. Problems with the fuel pump or untimely replacement of the fuel filter also leads to the engine error light coming on.
In this case, replace the fuel filter and fuel pump. The fuel system is leaking. In this case, you should check the fuel filler cap. Replace the sealing gasket or simply tighten the cover. Quite often, the reason for the check to light up may be the lack of a spark from the ignition coil. We also include problems with the operation of the catalyst to this point. Another reason is the failure of high-voltage wires. The elimination method is to check their functionality and, if necessary, replace them with new ones.
Note that the Check engine system is connected to the operation of most systems in your car. The occurrence of a malfunction indicates the requirement for immediate diagnostics of the machine in a specialized center. Timely technical inspection of the vehicle will help preserve your finances. After all, only specialists can correctly understand the malfunction and eliminate it.
It is not recommended to “reset” the check yourself, because truly serviceable systems in your car are the key to trouble-free driving and safety on the road.
the Lada Priora engine troit?
8 and 16 valves and what to do
Lada Priora
- a favorite among Russian cars, sales of modern vehicles are breaking records. Among the advantages of the Priora, owners note a good engine, which, in comparison with other Lada models, has the best dynamics; the interior is also very comfortable. But it doesn’t happen without effort, for example, an engine designed for 8 or 16 valves often fails.
A malfunction results in the motor quickly overheating, working as hard as it can, and then burning out a little later. Newbies are interested in what it means to “trouble” the engine? Experts explain that when you start the engine, it runs intermittently, and dull sounds are clearly audible from the exhaust pipe. Unburnt fuel emits a strong, stuffy odor, vibrations increase over time, and cracks form in the cushions.
Checking the ignition coil
There is simply no special method by which you can check the operation of parts. The instructions for the car indicate one of the methods for self-diagnosis. So, with the ignition turned off, check whether the ignition coil (Priora is no exception) is firmly attached to the engine.
Then they look at the reliability of electrical connections in the low-voltage circuit. If everything is in order, then check for a spark. To do this, the ignition coil is removed. A test plug is inserted into the tip and pressed against a metal part of the engine. Next, turn the starter. If there is no spark, replace the coil. If there is a flash, but the engine does not start, change the spark plug.
Checking the air filter
If the spark plugs and high-voltage wires appear to be in full working order, and the engine still runs, you should check the air filter. Sometimes this element may simply become clogged, as a result of which less air will flow into the engine, which will cause the analyzed breakdown. According to experts, there is no point in cleaning the air filter from contaminants, because the cost of a new element is quite acceptable, so it is better to simply replace the filter that has become unusable with a new one.
Most often, car owners, after carrying out the above measures, manage to get the engine working and, as you can see, carrying out repair work is quite simple and easy. But if difficulties arise during the work, you can watch a training video lesson on the Internet resource, which is taught by real masters of their craft.
Does the car jerk at low speeds or when accelerating? Is the engine running rough and the Check Engine light on? Has the car lost its dynamics and doesn’t drive like before? In this article we will tell you about all the possible causes of these malfunctions and how to solve the problem.
Conclusion
The reasons why the engine in a Lada Priora misfires can be determined independently, but not all car enthusiasts manage to eliminate them on their own. Therefore, if the materials provided in the article did not help, or turned out to be too difficult to understand, it is recommended to contact a car service.
Despite the fact that the Lada Priora 16 valves has many defects, this particular model is the most successful of the many varieties of VAZ. Among the most significant advantages are the following:
- dynamism;
- comfort;
- moderate fuel consumption.
However, this model also brings some problems to its owners, for example, the engine is difficult to start or immediately stalls, and the smell of gasoline is clearly felt even inside the cabin. But the most common problem, according to car owners, is that the Priora stalls when cold, as a result of which the engine quickly overheats. That is, if a car owner starts his car, and the engine begins to work with so-called interruptions, while specific sounds are heard from the exhaust pipe and a strong smell spreads from gasoline that has not burned completely, these reasons will indicate that the engine is running cold. You can fix this type of breakdown yourself, but in order for the repair work to be done correctly, experts recommend fixing the breakdown step by step.
Checking high voltage wires
Quite often the engine starts to stall, not only when cold, but also at speed due to failed high-voltage wires. It is recommended to check the serviceability and functionality of the wires in the following sequence:
- the wires are disconnected from the spark plugs and ignition coil;
- using a special tester, measurements of high-voltage wires are taken;
- If the device indicates that one of the wires is faulty or if a violation of the integrity of the element is visually detected, it must be replaced.
Experts recommend replacing not just one wire, but using a complete set to ensure uninterrupted engine operation.
Other reasons for reduced engine performance
The condition of the exhaust system also greatly influences engine power. The fact is that to protect the environment from harmful emissions during operation of the internal combustion engine, catalytic converters are installed in the exhaust.
As a rule, official services offer to replace a worn-out element, but the price of the spare part is very high. For this reason, on many cars in the CIS, the catalyst is simply knocked out, and the control unit is “deceived” by software or other available methods.
Also, when engine power decreases, it is necessary to separately check the installation of the timing belt or chain according to the marks in order to eliminate the possibility of valve timing failure. Sometimes there are situations when the belt can jump one tooth, the chain stretches, etc.
In this case, the synchronous operation of the valve mechanism in relation to the operating cycles of the internal combustion engine may be disrupted. This leads to various failures, unstable operation of the unit and reduced power.
Let us also add that engine wear and certain malfunctions also affect engine power. As a rule, worn-out internal combustion engines with mileage usually lose about 10% of their declared power.
One way or another, any leaks in the combustion chamber will lead to expanding gases breaking out of the cylinder during fuel combustion. This means that the pressure of these gases on the piston will decrease, and the internal combustion engine itself will draw poorly and operate unstably.
Finally, we note that the reason that the car has lost dynamics may not be the engine, but the transmission. In other words, the power unit develops enough power, but it is not fully transmitted to the wheels.
If, when coasting, it is noticeable that the car immediately begins to slow down, then the problem is obvious, the wheels are slightly blocked. If no problems with the brakes are identified, then automatic transmission diagnostics are necessary. It is better to entrust this procedure to experienced specialists by delivering the car to a service center.
Purpose, design features, installation location of the fuel pressure regulator of an injection engine. Signs of RTD malfunctions, checking the device.
As a result, jerks and dips appear when accelerating, and the car jerks in motion during transitional conditions. Causes and troubleshooting.
The most common reasons why an engine does not develop full power. Why do they occur? Common problems with gasoline and diesel engines.
Why the engine may not pick up speed: gasoline engine, diesel unit, car with LPG. Fault diagnosis, useful tips.
When you sharply press the gas pedal, the engine jerks, jerks and dips appear, the car does not pick up speed: the main causes of the malfunction and diagnostics.
Signs of a non-working cylinder (tribbing and vibration) of a diesel engine. Troubleshooting: compression, diesel injectors, glow plugs, injection pump and others.
What is the danger of this defect?
Having discovered that the engine begins to stall, this defect must be eliminated as quickly as possible, despite the fact that signs of malfunction may disappear after re-gassing. The fact is that such a malfunction can reduce engine power, which will lead to an emergency on the road. After all, every car owner relies on the power of his engine, especially when overtaking, and since the power of the power unit will be reduced, the car simply will not have enough dynamics to complete overtaking, especially in severe frost and ice on the road. Only timely car repairs and finding out the cause of the breakdown will help to avoid a deplorable situation.
Every car owner can do this in his own garage with the simplest tools, if the work is done in stages.
Table: Common Error Codes
Directories of self-diagnosis codes for foreign cars consist of multi-page descriptions. The main alphanumeric self-diagnosis code can be accompanied by a short description in English or Russian by the on-board computer. Since English-language terms are incomprehensible to many drivers, we present the main codes that accompany the illuminated check engine light, with a description in Russian.
| Codes | Description |
| P0100 | Failure of the air flow sensor (or circuit) |
| P0105, P0106 | Air pressure sensor signal abnormalities (may be associated with an open gas tank cap) |
| P0125 | Cooling faults |
| P0130 – P0140 | Incorrect signals, reading failures, lambda probe breaks |
| P0195, P0199 | Failures, signal violations of the oil temperature sensor |
| P0200 | Injector control circuit malfunctions |
| P0201 – P0212 | Defects in injectors by cylinder |
| P0230 – P0233 | Violations of the primary and secondary circuits of the fuel pump |
| P0300 | Misfires |
| P0301 – P0312 | Misfire (by cylinder) |
| P0321 – P0323 | Violations, omissions of ignition distribution signals |
| P0350 – P0362 | Ignition coil malfunctions |
| P0400 – P0402 | The exhaust gas recirculation system does not work |
| P0420 – P0434 | Catalyst malfunctions |
| P0561 | On-board voltage instability |
| P0600 – P0606 | Electronic control unit module errors |
| P1604 | Engine starting system failures |
| P1398 | Crankshaft position sensor failure |
| P1120 – P1125 | Violations of signals from the throttle valve |
| P1605 – P1620 | Flash Memory Failures |
Error code: Gasoline is bad? Check, vibration at idle - Volvo Club | Volvo Club
For budget foreign cars, at the same time as the check engine light is illuminated, the computer can display general error descriptions on the display, such as “power is limited,” “maintenance is due.” In such situations, it is difficult to analyze the exact cause of the signal. The best solution would be to visit a car service center for a full computer diagnostic of the internal combustion engine.
