Lada Granta troits engine reasons

Troubleshooting is one of the most typical and common malfunctions in engine operation. This happens if one or more cylinders stop functioning or work only partially. The main cause of the malfunction is a violation of the normal combustion process of the air-fuel mixture. Because of this, the internal combustion engine begins to operate unstably both at idle and when driving under load. The failure is almost always characterized by engine vibration and loss of power. Possible misfire with typical loud popping sounds from the muffler.

Causes of engine tripping and their elimination

The Lada Granta engine suffers for a number of direct and indirect reasons. Vibration is not the main sign of a malfunction of the internal combustion engine. This is an indirect manifestation that should be considered along with others. For example, vibration may occur if the engine mount is worn out. To identify the cause of the problem, you need a complete diagnosis of the car.

The check begins with the fuel line, followed by the ignition and air supply systems. Sometimes it doesn’t hurt to test the correct operation of the ECM - perhaps the reason is incorrect readings from failed sensors.

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Spark plug fault

One of the reasons for engine malfunction is late or early ignition, as well as failure to ignite the mixture caused by the absence or insufficiency of a spark. First you need to unscrew the spark plugs and inspect them. The spark plug must be replaced if there is visible damage to the insulator, this is immediately noticeable - the area turns black. Please also pay attention to compliance with the established standards for the gap between the two electrodes.

The next object to be checked are high-voltage wires. Since their insulation is made of rubber or silicone, over time the material dries out and cracks, resulting in “breakthrough” of the wires. A sign of this problem may also be the frequency of engine tripping, when after some time the engine operation stabilizes. Visually, a breakdown is easy to detect in any dark room: start the engine and open the hood - you will notice the glow of sparks on the wires.

The reason for the absence or insufficient spark may be a breakdown of the electronic ignition module. You will need an assistant to check its functionality. The spark plugs are unscrewed and secured to ground, and high-voltage wires are connected to them. After this, one person turns the engine with the starter, and the second looks for a spark.

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Intake problems

The engine may stall due to insufficient air supply to the cylinders or, conversely, due to its excess. The main reason for such a malfunction is the loss of tightness of the intake system, which causes air to leak from the outside. The engine control unit does not take into account excess air, resulting in a malfunction of the motor.

Checking the intake system is not difficult. The easiest way is to pinch the air intake pipe near the air filter. If the system is working properly, the engine will start to stall, but if excess air is sucked in, it will continue to work. Based on the hissing sound, it will not be difficult to find the place where the system is leaking.

Another reason is insufficient air supply to the cylinders. The source of the problem is a dirty air filter. Lack of air may occur due to obstruction of the throttle valve or its incomplete opening/closing. Usually the problem is solved by flushing the throttle assembly or replacing it.

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Sensor malfunction

One of the reasons for the tripping may be incorrect readings from the sensors of the internal combustion engine control system transmitted to the ECU. Due to incorrect parameters, the control unit does not regulate the throttle position. Because of this, he cannot calculate the correct composition of the fuel mixture, the engine begins to operate unstably or other problems are observed. A diagnostic scanner will help correct the situation, which will count errors that have occurred from the ECU and show which of the sensors has failed.

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Fuel system malfunction

Diagnostics of the power system involves measuring the pressure in the fuel system and determining the presence of air. The level of fuel pressure depends on the normal operation of the fuel pump. The main reasons for this problem include the following:

strainer (clogged);
electric motor;
fuel supply;
pressure regulator on the fuel rail.

Problems with injectors can also cause unstable engine operation. They often become clogged with dirt coming from the gas tank. As a result, the correct atomization of fuel is disrupted, or it is supplied in insufficient quantities due to the reduced throughput of the injector.

To check the injectors for functionality and clean them, a special stand is used, on which flushing liquid is supplied through them under pressure. This method creates an imitation of the operation of the fuel system in real conditions, and evaluates its performance. The injectors can be cleaned and washed independently. It is allowed to use any flushing liquid. The nozzle must open in a timely manner when a pulse is applied and not leak. Gasoline should not flow - a working device sprays fuel, since this is the only way to achieve efficient combustion in the cylinders.

If the listed problems are not found, it is recommended to check the engine control unit. It can fail in rare cases; usually the main reason for its malfunction is a change in the factory firmware. This happens when installing an LPG or if the owner did chip tuning by installing software from a third-party developer. An incorrect fuel map can cause gasoline to overflow and, as a result, spark plugs to flood.

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Low compression in cylinders

Low engine compression may indicate that it is worn out or has a malfunction. This means that one or more cylinders are not firing or are firing only partially, resulting in the combustion chamber not being compressed enough. Despite the fact that fuel is supplied in normal volume and of the required quality, complete combustion does not occur. Compression may drop if pistons, valves are burned out, piston rings are worn out, or there are defects in the cylinder head and other elements of the timing system.

Compression is measured in each cylinder separately. If deviations from the norm are detected, the engine must be disassembled for repair and diagnostics.

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Floating engine speed

Engine speed problems can easily be identified by looking at the tachometer. Stable operation of the power unit at idle should not exceed 850 rpm. A small spread of 750 to 850 rpm is allowed. If the tachometer needle jumps chaotically—it goes down, then it goes up—there is a malfunction. This is a fairly common problem, and it is easy to identify why the speed of the Lada Granta is floating. It is enough to listen to the engine running - with unstable idle speed, the noise either decreases or increases.

The floating speed is also indicated by a characteristic vibration that will either subside or increase, transmitted through the engine compartment.

Why are the revs jumping?

The cause of the problem is the specifics of regulating the operation of the power unit at idle by the control unit. It continuously reads data about the status of various engine systems from sensors. If the idle speed becomes unstable, the sensors are given a command to correct the functioning of the system.

A malfunction of the mass air flow sensor may be one of the causes of the problem. During operation, it becomes covered with a thin oil film, the formation of which will certainly lead to breakdown. When excess air is sucked through the inlet into the cylinders, idle speed is disrupted. As a result, the air flow sensor transmits incorrect information to the ECU about the excessive consumption of incoming air. The failure is displayed on the dashboard - a “check”, or engine error, lights up on the screen of the Lada Granta’s on-board computer. In this case, the control unit commands the valves to admit more fuel into the cylinders and equalize the ratio of air and gasoline to prepare the optimal mixture. As a result, the speed increases sharply, and the ECU realizes that there is too much fuel and gives the command to limit the supply. As a result, the speed drops sharply.

IAC (idle air control) can also cause jumps in engine speed, in which case a “check” will light up on the dashboard. The regulator is an electric motor with a cone-shaped needle. Its direct purpose is to adjust and maintain stable idle speed. A faulty regulator stops working normally, and the engine, left without it, begins to randomly increase or decrease speed.

Unstable idle may be caused by a problem with the oil pan ventilation valve. Engine operation is accompanied by the release of gases that accumulate in the pan. If there is a large amount of crankcase gases, they are discharged through the ventilation system through the intake manifold to the throttle assembly. With their help, part of the air-fuel mixture is formed in the combustion chambers. If the valve loses its normal throughput, then less gases enter to enrich the mixture, and the speed begins to float.

The throttle valve may not properly regulate the air pressure entering the combustion chambers. The cause of the problem is an oil film on the walls. The damper drive may also be faulty, causing the speed to involuntarily increase and decrease.

Methods for eliminating floating speed

Any cause of idle fluctuations can be neutralized in the following ways:

Excessive air leak. The intake system needs to be checked for leaks. You can treat the hoses with WD liquid - there is a crack in the place where it instantly evaporates. You cannot seal it with tape or tape; only replacing it with a new part will help.
IAC breakdown. The serviceability of the idle air control can be checked with a multimeter by measuring the resistance. If the readings are between 40 and 80 ohms, the regulator must be replaced.
Malfunction of the oil sump ventilation valve. You can get to the part only after removing the pallet. The valve is dismantled, thoroughly washed in gasoline or kerosene and, after drying, installed in its place.
Problem with DMRV. If the mass air flow sensor fails, it cannot be repaired; it can only be replaced with a new part.
Problems with the throttle valve. If the problem is incomplete closure, the throttle assembly can be washed, for example, with carburetor cleaning fluid or the like.

It is quite easy to fix problems associated with floating engine speeds on your own, especially when you have minimal skills and experience. If you think that you cannot cope with such work, it is better to contact a service station.

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..

When you turn the ignition key of a Priora car, all electronic systems are checked and the check light comes on for a few seconds, this is normal, as it should be. It’s bad when the check light doesn’t light up when you turn on the ignition, which means the check system isn’t working. If the checkbox on a Priora comes on and is lit when the car is started, the owner immediately falls into panic for some reason - at least in most cases. There's no need to panic, but I wouldn't recommend not paying attention. The engine has 16 valves - Priora is equipped with sensors in many components and this may indicate a breakdown. The check light is on on the dashboard of the Priora car, bottom left. Sometimes the check light comes on, you look, and it just drove through a puddle and the knock sensor got wet. The check light is on, it blinks when cold, but there is no need to panic, we need to look for the reasons. Let's make a reservation right away: there are false positives. Read the article and find out all the reasons why the check engine is triggered.

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, AU17D spark plugs are installed from the factory.

Spark plug

Check the spark plugs first. They are the most common cause. Even if the spark plugs were changed not long ago, still unscrew and inspect.

A properly functioning spark plug does not have black deposits on the electrodes and insulator. The candle body is white, without black stripes or dots. The presence of defects indicates that the spark plug has been struck by a discharge and will no longer work correctly. Carbon deposits interfere with the normal formation of a spark and the engine will fail.

Carbon deposits on the spark plug electrodes are the main cause of combustion in an internal combustion engine.

The second reason is incorrectly selected candles. Buy those recommended by the car manufacturer. Too much or too little clearance can cause one or more cylinders to fail.

Recommended spark plugs for Lifan cars

What's the result?

As you can see, if the engine stalls and the check engine light blinks, it is necessary to determine the cause as quickly as possible. A timely call for service or repairs will allow you to avoid subsequent troubles with the catalyst and lambda.

It must be remembered that tripping and misfires do not always indicate a serious breakdown. In some cases, it is enough to replace the spark plugs or explosive wires, while in others the engine still needs to be repaired.

In this case, the spark on the candles will be normal, the injectors will also supply fuel, the compression measurement will not reveal any deviations from the norm, but the “check” in this case will still blink or blink.

The main signs by which you can determine problems with the DPKV crankshaft position sensor. Causes of failures, breakdowns, self-check.

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.

For what reasons may misfire of the fuel-air mixture occur in one or more cylinders? Fault diagnosis, recommendations.

Why does the check light light up on the dashboard? Is it possible to continue driving a car if the check engine light is on? What should you check first?

Why the engine may not pick up speed: gasoline engine, diesel unit, car with LPG. Fault diagnosis, useful tips.

The engine does not start after washing the engine: the main reasons why the power unit cannot be started. What can be done in such a case.

If the check is blinking and the VAZ 2114 engine is shaking, then repair work will need to be done. You need to find out the cause of the breakdown first.

If the engine is running smoothly and unbalanced, it is recommended to check the cylinder. Its malfunction is associated with a breakdown of the spark plugs, oxygen sensor and ECU. The cylinder can fail instantly or evenly. At the beginning, the VAZ engine starts to sputter, fuel consumption increases, engine power decreases, and vibration increases.

If the vehicle is not repaired in time, the engine may fail. This is explained by the fact that gasoline is constantly supplied to the broken cylinder, which is mixed with oil and goes into the crankcase. With a prolonged process, the latter substance liquefies, losing its characteristics. Unit parts operate in critical mode, wearing out and forming chips.

If the check is flashing and the VAZ engine is shaking, then you need to follow the following tips:

start the unit;
open the hood lid;
alternately remove the wires from the spark plugs.

Justine 07/04/2016 — 00:28

Lada Granta, 16 valve, mileage 100 thousand. It all started 2 months ago with a mileage of 95 thousand: I come to the car in the morning, start it, it immediately starts to trip, after a few seconds the check blinks, after a while the error “Misfire in cylinder 4” is recorded " I turn off the car and immediately start it again - everything works smoothly. The same situation could have happened simply after a short stop, when the engine cooled down to about 60 degrees - the car started up in the same way. After suffering like this for a month, swapping coils, replacing spark plugs, changing gas stations, I decided to pour injector cleaner into the tank. While I was looking for the tank with the cleaner, it also started and troubled, but recently it has become less frequent. Even before the start of the tripping, I noticed during startup that the spark plug in cylinder 4 unscrews extremely tightly along the entire length of the thread, and the first three unscrew well. Previously, all 4 spark plugs unscrewed well.

Why can the engine stall when cold and why does the spark plug in cylinder 4 unscrew very tightly?

How to reset an error on Grant

There are three ways to get rid of the “Check Engine” icon:

Fix the problem;
Reset using OBD2 adapter;
Reset without adapter manually.

We use OBD2 adapter

Do you have a high-quality diagnostic adapter and the necessary software on hand? Then resetting will not be difficult. What to do if there is no program or diagnostic scanner?

The easiest way out is to buy a scanner from China. Price – 200-300 rubles. The main condition: read reviews about compatibility. Whether he reads your car or not is a lottery.

Once you have the scanner, insert it into the OBD connector to the left of the glove compartment.

The connector is located in an easily accessible location to the left of the glove compartment lid.

Download Torque Lite program - free version, basic functions work;
We start the car so that power goes to the adapter and error data appears;
We turn on Bluetooth on the phone, add a new device (the adapter will be detected as OBDII);
Open the Torque program - at the top of the screen there will be messages like Waiting for connection, Checking the CAN protocol, Connected successfully;
Open the settings – Fault Codes – Show logged faults.

The saved codes will appear on the screen. There, using Clear logged faults, you can reset all errors and the “check” will go out. Not forever - until the problem appears again.

Open settings – Error codes – Show saved ones.

An option close to a scanner is installing an on-board computer . BC:

Determines the error;
Will show its code and decryption;
It will help you reset.

How to remove a check without an adapter

Everything is simpler here. When you don’t have OBD or a phone with software at hand, you just need to disconnect the terminal from the battery.

which terminal to remove . De-energize the car for 5-7 minutes and all errors should disappear.

Problem with the method : it works less and less often. Only the scanner is guaranteed to reset.

Malfunction of the injector or nozzles

The injection engine fails in the following cases:

The injector is faulty, but this is very rare.
Bad gasoline was poured in or fuel system cleaner was used incorrectly.
Clogged injectors.
The electrical power supply circuit for the injectors is open or shorted.

Engine diagnostics and a competent motor mechanic will help eliminate such malfunctions. To independently check the injector and nozzles, you need experience and special equipment.

How to determine which cylinder has failed

To determine a blocked cylinder, carry out the following steps:

Disconnect the ends of the high-voltage wire from each spark plug one by one.
Record the change in sounds in the operation of the engine with the spark plugs turned off; the previous sound indicates that the inactive cylinder has been turned off; we can conclude that this particular element has failed.

When disconnecting explosive wires, an electric shock may occur. To avoid injury, it is necessary to use a dielectric material in the form of a rubber mat or a dried wooden platform under your feet. When disconnecting, you need to grab the wire, but not the cap, and you cannot touch the car body.

High voltage wires

Checking high-voltage wires is mandatory when diagnosing an engine when it is tripping. There should be no traces of breakdown on them. Spark plug tips must be clean and free of carbon deposits.

After visually inspecting the spark plugs, check the high-voltage wires. There should be no traces of breakdown: black dots or stripes. Due to the breakdown, the current does not reach the spark plugs. This defect is the next reason for the tripping of an internal combustion engine.

Checking the wires yourself will not cause difficulties. They are tested with a conventional multimeter. It is necessary to measure the resistance of each wire.

Video of checking BB wires

Check the wires with a multimeter. Measure the resistance of each wire. It differs for different car brands, but does not exceed 20 kOhm. Good wires have the same resistance. If one of them shows much less or more, then it is faulty and because of it the power unit is tripping.

Independent search for the cause

What to pay attention to:

Check the MAF (mass air flow sensor).
Examine the IAC.
Examine the wiring of the DS (speed sensor).
DPKV (crankshaft position sensor) is the next object of inspection. But the reason, most likely, is not in it specifically, but in its chip or wiring.
The TPS (throttle position sensor), an element of the throttle assembly, must also undergo a thorough inspection in such a situation. Perhaps a simple cleaning is needed.
Check high voltage wires and spark plugs.

Once the cause is identified, the problem must be corrected. Your actions in this case depend entirely on what exactly went wrong.

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Low compression

Trouble the engine due to insufficient compression in the engine cylinders. The decrease occurs: when the rings are stuck on the pistons, the valves burn out. Some car models allow valve adjustment. Incorrectly set gaps are the cause of tripping of an injection engine.

If you have trouble with the engine and one or more cylinders are not working, do not rush to go for computer diagnostics. A scanner check will detect a misfire, but will not indicate the cause. The cylinder is not working - this is already obvious. Before going to a car service center, check the spark plugs and wires. They are most often to blame for engine trouble.

Signs indicating a missing engine

You can find out what is wrong with the engine by examining the following signals:

increased vibration of the engine - this means that the engine is shaking at idle or at low speeds;
change in the color of the spark plugs, they become dark, covered with soot and carbon deposits;
a characteristic exhaust sound indicates that some engine cylinder has lost its function and the engine is running rough;
the appearance of thick white, black smoke from the exhaust pipe;
there is not enough strength to accelerate the car;
increase in gasoline consumption;
the check blinks, indicating unstable speed;
increased intermittent shocks during acceleration, as well as during uniform movement.

A certain sound of an altered stroke in a running engine can also be a consequence of the fact that this is causing the engine to throttle.

The symptoms that occur at low speeds, at high speeds and at idle are similar. How to find out the real reason? If the engine revs intensely at high and also at medium speeds, it means that the valves that allow the gap to increase when the engine reaches operating temperature are faulty. If it throttles at low speeds, the valve clearance increases until it warms up, and then restores.

It helps to determine that the engine has started to stall by the presence of changes in the sounds it makes during operation. Failures are most noticeable when a person is positioned near the exhaust pipe.

The presence of any of the listed symptoms indicates problems in one, two or three cylinders. If the engine periodically fails, then ignoring a serious defect will certainly lead to a major overhaul of the car.

Why does the Lada Granta engine stall?

Causes of cylinder failure

The appearance of missing is caused by the following factors:

failure to adjust the ignition start;
air intake in the brake system;
accumulation of carbon deposits and breakdown of spark plugs;
the integrity of the electrical wire leading to the spark plugs is broken;
the appearance of malfunctions in the capacitor;
violation of the integrity of the intake manifold;
piston valve wear;
the piston rings have become unusable;
failure to adjust the gas distributor valves;
violation of the integrity of the gaskets in the fuel pump head;
wear of oil seals;
adjustments in the carburetor are broken;
air filter clogged;
violation of the vacuum membrane of the advance regulator;

Inconsistency between the spark plug sizes and this type of engine can cause serious malfunctions in its operation.

When a cylinder stops functioning, the engine fails, the reasons that caused this defect entail a loss of power of the power unit, an increase in fuel consumption, and a malfunction of all vehicle systems.

All cars for which AI-92 gasoline is contraindicated. The car will have to be sent for overhaul

Tips In addition, the engine may fail due to untimely replacement of spark plugs or their poor quality. This can be determined by the presence of soot and other defects on the spark plugs. It is advisable to change them at every oil change or at least every other time. At the same time, it is recommended to purchase products from well-known manufacturers, not necessarily from the expensive segment.

This phenomenon is often caused by contamination of the crankcase ventilation or damage to the hoses. In this case, the ventilation system should be cleaned and the hoses replaced.

Often, a malfunction of the ignition coil causes the power unit to trip . This problem can be determined by computer diagnostics and inspection of this part. In this case, the faulty coil should be replaced.

All of the above faults do not require expensive repairs, and you can install them yourself if you have experience and equipment, or for a very reasonable fee in almost any car service center with good recommendations. But sometimes the engine can fail for more serious reasons. Therefore, if all the tips presented above did not help, you probably cannot do without consulting an experienced mechanic. Author: F. Averyev

Elimination methods

To eliminate the tripping effect on a vehicle, you need to have enough time, since it may take a whole day, as well as tools. To work, you will need a set of wrenches, screwdrivers and heads, as well as a multimeter. So, let's look at how to troubleshoot problems that have arisen.

Low quality fuel

Many experienced Kalinovods on the forums describe what is happening to the Kalina engine as the use of low-quality fuel. It is because of this that the “Check Engine” warning light on the dashboard may light up.

The on-board computer recognizes a poor-quality mixture by the combustion process. But that's not the worst thing. Poor quality gasoline can clog elements throughout the system. The consequence of long-term use of this type of fluid can lead to the valve mechanism, as well as the pistons, burning out. In this case, major repairs become inevitable, since parts wear out at an accelerated rate.

If it is discovered that the gasoline is of poor quality, the motorist will face a whole range of repair operations, namely:

Cleaning the fuel tank and replacing the filter.
Cleaning or changing spark plugs.
Dismantling and checking injectors.
And finally, disassembling the cylinder head.

After cleaning, you need to fill it with high-quality gasoline and drive it. The CHECK icon should turn off on its own when high-quality fuel enters the system.

Fuel cells

A clogged fuel pump and filter can cause a tripping effect. So, the fuel pump has a mesh filter that could become clogged. To eliminate the malfunction, it is necessary to pull out the pump and inspect its condition. As for the fuel filter element, it is recommended to replace it, since most likely it is clogged.

Spark generator

Spark plugs and high-voltage wires play a role in spark formation, which also tend to wear out. Thus, the motorist needs to unscrew the spark plugs and inspect them for cracks.

Then, it is worth checking them for resistance and contact. This is done on a special spark plug stand, but it can also be done manually without leaving the car. Owners of old Lada and Volga cars are well familiar with the second method.

High-voltage wires are checked quite simply. Using a multimeter, an indicator such as resistance is measured. For each wire it should be around 5 ohms.

Air supply

The third group, which is responsible for the normal combustion process and the formation of the air-fuel mixture, is the air supply. The main elements of the system can be considered the air filter and the throttle valve.

The condition of the air filter element plays a big role in how the fuel burns. Therefore, when searching for the causes of tripping, it is necessary to examine the condition of the assembly and the part. If the air filter is too clogged or has oil residues, then this is the cause of the engine tripping, since a normal air-fuel mixture is not formed.

The second element of the system, the contamination of which leads to the engine tripping, becomes the throttle. To eliminate the malfunction, it is necessary to remove the unit from the vehicle and clean it. This is usually done using special products or carburetor cleaning fluid. Along with this unit, it is recommended to clean the air supply corrugation.

Motor mechanics

Every motorist's worst dream is damage to the engine mechanics. In most cases, this leads to a major overhaul of the power unit. In this case, tripling could be caused by burning out of the valves and the formation of a gap between the valve and the seat.

To eliminate the malfunction, it is necessary to dismantle the block head and inspect the condition of each valve. If there are burnt elements, you need to prepare for the worst - repairing the cylinder head.

It is also recommended to inspect the condition of the components and parts of the cylinder block; perhaps they are also worn out and require the intervention of the motorist.

Electronics

The “Check Engine” warning light may come on due to faulty electronics, namely the failure of the sensors. This may result in a tripling effect. To eliminate the malfunction, it is necessary to carry out diagnostic operations, namely, check a number of sensors. Malfunction of which meters can lead to motor tripping:

Coolant temperature sensor.
Mass air flow sensor.
Idle speed regulator.
Knock sensor.
Throttle position sensor.
Crankshaft position sensor.

Diagnosis of meters is carried out using a multimeter. To do this, you should disconnect the wire block and ring each pair of contacts.

Distributor and capacitor

If the problem is in the capacitor on the distributor (and it can either fail completely or partially), then the engine will start and can operate properly and stably at idle speed. But while moving, the unit will twitch. This indicates a damaged capacitor. Remove the cover from the distributor, move the slider so that the contact opens. How is it checked? Turn the slider by hand to open the contact.

During the opening process, a spark should jump. If the capacitor is damaged, it will be blue and quite strong.

Diagnostics

At the first symptoms of detonation, you first need to pay attention to the quality of gasoline. It is almost impossible to fill the tank with counterfeit products at branded gas stations. Otherwise, you will have to drain all the gasoline. If this does not help, then there are signs of a controller malfunction. You can diagnose the device as follows:

by turning the multimeter lever to voltmeter mode, set the measurement zone within 200 mV;
the device clamps are installed on contacts “A” and “C” of the controller (see the top diagram);
by tapping a metal object (screwdriver or pliers) on the sensor body, record the voltmeter readings;
if the voltage increases, then the device is working properly and the cause of the explosive processes must be sought elsewhere;
the absence of changes in the multimeter readings will mean that the meter has become unusable and requires replacement.

Knocks in the engine

It also happens that the engine begins to make abnormal sounds that were not previously characteristic of it. And, with an increase in engine speed, the sounds only intensify.

Crankshaft pulley

Most often, we are talking about vibrations of the crankshaft pulley. In this case, you will have to replace it with a new one, since it cannot be repaired. You can also highlight the loosening of the timing belt. To remove this effect, it will be enough to adjust the tension through a specialized service technician.

Flywheel loosening

It may also be that the flywheel is loose. This doesn't happen often, but it's worth checking just in case.

Summarization and decoding of all error codes

All error codes for Grant can be found here.

The check engine light will not come on by itself. There is an indication - there is a problem in the car.

Resetting does not cure the problem - the problem will not go away without intervention;
For an easy and quick reset, OBDII scanner - you can buy a simple one for 200 rubles;
You need to look at the error as soon as it appears - the problem can be either unimportant or critical for the use of the machine.

Write us comments and ask questions. We will answer everything we can!

Why does the engine stall? Causes and methods of eliminating engine tripping

If you, in the company of your friends, say that your engine is missing, they may misunderstand you or simply look at you with “square” eyes. It’s another matter if you complain that the engine is running rough or one of the cylinders is not working, in which case you will be bombarded with a large number of different versions and assumptions taken supposedly from personal experience, as well as advice on what needs to be done in this case . You can, in principle, listen to the advice of friends, there is nothing wrong with that, but I would also recommend listening to the opinions of experts on this matter. In my article today, I will talk about what engine tripping is and where it comes from, you will learn about the causes of this unpleasant phenomenon, as well as ways to eliminate this malfunction. Armed with the information I needed, I decided to visit the mechanics at one popular bus station in our city, in order to find out whether the various “experts” wrote on the forms were true and whether they should be trusted. Simply put, I decided to ask why the engine troubles those who are directly related to this.

The check on Grant caught fire: possible reasons

So, you're on the road, and the engine icon lights up on the dashboard. On all cars this sign looks the same - it cannot be confused with anything else. How to understand what the reason is ?

There is an opinion: you can find out the error code if you enter the instrument panel into service mode . This is when the instrument needles jump in all directions, the display shows information about the car software version.

This is not true - you can find out the software. Error code - not always . You need an OBDII adapter like ELM327 with a display or Bluetooth connection to a phone with a program like Torque (free).

An OBD2 diagnostic adapter can be bought for pennies on Aliexpress. Whether he sees your car is a lottery, since this equipment is unprofessional.

System error

A software failure in the electronic control unit (ECU) can lead to any error being reflected, even if there is none in the engine. The error codes for which the ECU is responsible go from P0030 to P2501.

Errors related to automatic transmission : P0720 – P1701.

Data transmission problems : U0001 – U0305.

A malfunction in the electronic control unit will also appear on the instrument panel. Photo: Drive2 blog KurskCarTuning

Oxygen sensor

Granta divides errors into two oxygen sensors: before and after the converter. Problems with them from burning out.

Codes for the sensor before the neutralizer : P0030 – P0032 / P0130 – P0135.

After the neutralizer : P0036 – P0038 / P0136 – P0141 / P2270 – P2271.

Problems with sensor heating: P1102, P1115, P1135, P1141.

The oxygen sensor, also known as a lambda probe, is often removed when reflashing the car and replacing the exhaust with 4-2-1. If the sensor is on the car and fails, replacement will cost a lot of money.

UCH or CBCH error

What are UCH and CBKE? These are control units for all interior electronics on luxury versions of Lada.

Problems with TsBKE on Grant : turn signals do not work, window regulators take on a life of their own, etc. Replacing the unit is problematic; with labor and parts, expect about 4,000 rubles.

There is an option to transfer the electronics to a relay, as implemented on the Standard and Norma.

Replacing the TsBKE - removing the panel, or dismantling it through the removed instrument panel. Photo: ifoxli.ru

Problems with the mass air flow sensor

The mass air flow sensor (MAF) is installed under the hood immediately after the air filter.

The car runs rough or won't start;
The check is on;
Increased fuel consumption (up to one and a half times).

Mass air flow sensor errors : P0101, P0102, P0103.

Instead of replacing, you can try washing the sensor with a cleaning agent.

Crankshaft position sensor

DPKV - crankshaft position sensor - also has its own set of possible errors: P0335, P0336, P0337, P0338.

Diagnosing the sensor is important, but often problems with it are immediately obvious. If the DPKV fails, the car simply will not start or will operate extremely unstably.

DPKV on Grant costs a penny and is easy to change. The sensor is located in the engine compartment on the oil filter side near the drive disc.

More articles on repair Grants at this link.

Sometimes there are cases when the engine only starts “cold” or “hot”

In this case, the valves are most often the cause; they may have become misadjusted. Valve adjustments should be carried out every 20 thousand km. The essence of this problem is that most likely the valves have large gaps, but after the engine warms up they become smaller and the engine does not leak. The same applies to “hot” conditions - when the engine is cold, the valves are normal and the engine is running smoothly, but after warming up, the unregulated valve is clamped, as a result, the cylinder stops working and the engine begins to stall.

I will end here, I hope my article was useful to you and you found the reason for the engine tripping. If not, seek help from specialists. If you know other reasons for engine tripping, I’ll be happy to hear them, use the comment form.

Finding the cause of the malfunction

The engine starts to stall when the fuel pump malfunctions and does not pump in the required amount of fuel, or when it does not burn completely. The substrate of the first case is not only the fuel pump itself, but also the conductive system. And the second reason may be related to problems with the ignition system, spark plug carbon, or improper operation of the engine valves.

If the fuel system is not working properly

, the feeling that the engine is stalling will develop a minute after the start, and then will only increase. If there is a narrowing of the pipeline, or there is no power to the fuel pump, such problems are not uncommon. You can check this after exposing the relay: start the engine, check the functionality of the pump and relay. In this case, the on-board computer will not show errors.

If there is a problem in the valve apparatus itself, in the spark plugs or in the ignition system, it will also manifest itself. Namely: the engine will start normally, but a moment later it will start to stall. Similarly, the power unit fault light should light up, because standard sensors perceive an excess (or lack) of fuel.

Read more: Where is the Skoda Superb assembled?

When such interruptions in the fuel supply occur, twitching develops, because the amount of gases produced in different engine operating cycles varies.

Valve check

After an unsuccessful replacement of spark plugs, engine malfunctions occur due to the valve. According to statistics, the situation is observed in 20% of cases of the total mass. The part is responsible for opening, closing, and regulating the flow of the combustible mixture.

Valves are now made from different materials, there are many manufacturers on the market, so inconsistencies arise.

An integral element of the valve is a spring, which should provide guaranteed rigidity. Only qualified specialists can adjust the valve, so you will have to contact a workshop.

Conclusions obtained after diagnostics

When carrying out a thorough diagnosis, special attention must be paid to the appearance of the spark plugs. The presence of the following signs is unacceptable:

If an insufficient amount of fuel is poured into the cylinder, it means that the parts and components of the fuel pump are faulty. Increased fuel supply indicates that the fuel injectors are dirty and have become unusable. Impaired settings of the electronic control unit are also the cause of the engine shaking.

Such situations are often observed, as a result of which the engine can also trip:

The lack of engine compression or its low level is the most difficult defect. This type of engine failure can indicate the following facts:

The car owner needs to determine why the engine is stalling and what to do next. It is necessary to seek professional help from the nearest service station, where qualified computer diagnostics of the car’s power unit will be carried out.