VAZ 2114: starts and stalls - 7 reasons and ways to eliminate them

The “fourteenth” model from the domestic automaker AvtoVAZ gained enormous popularity in its time due to its reliability, workmanship, responsiveness and agility of the power unit.

Of course, this car cannot be called ideal. Therefore, problems may arise from time to time. It is not uncommon for the rpm to fluctuate at idle. Such phenomena irritate the driver and lead to unpleasant scenarios on the road. For example, at any moment the engine may simply stall.

It is unlikely that you will be able to solve the problem for a long time by pressing the accelerator pedal in order to maintain speed. Therefore, more drastic actions need to be taken.

How does this happen

If the car is running normally, all you need to do is start it and wait until the engine warms up to the optimal temperature. The tachometer indicator at this moment is at 2-2.5 thousand rpm, and then gradually drops to about 800 rpm as the power unit warms up.

But when there are problems, the idle speed jumps and changes sharply. The range of revolutions difference on the tachometer can be significant, up to 1.5 thousand revolutions. The car seems to live its own life. After some time, this phenomenon stops. But the next time the ignition is turned on, everything repeats.

conclusions

For VAZ-2114 owners, the situation when you have to turn the starter for a long time when starting the engine is a fairly common occurrence. The reasons are discussed above and may relate to many systems: fuel, engine power system and others.

For some reason, it seems that many drivers of this model will be interested in the question of why the VAZ 2114 does not start well . Finding the cause of this phenomenon is not as easy as it might seem at first. This is due to certain difficulties in troubleshooting in this model, since injection systems differ from carburetor systems. The algorithm for identifying possible problems will be built differently, adapting to the design features of the machine.

Causes

The most dangerous thing in this case is inaction. Today we will talk about why the idle speed on the VAZ 2114 jumps, what are the reasons and what actions should be taken in this or that situation.

In fact, the reasons can be very different, so we will try to comprehensively study this issue.

Electronic control unit

It is not uncommon that the electronic brains of the VAZ 2114 car become the source of all problems associated with idle floating speed. If a sensor fails, this affects the ECU receiving incorrect information. Consequently, the engine does not operate at the parameters it needs.

Unfortunately, it will not be possible to independently diagnose and identify malfunctions of the electronic control unit. This requires appropriate experience, special equipment and tools. Therefore, this issue is resolved in a high-quality car service and nothing else.

Sensors

If the injection VAZ 2114 stalls at idle, the problem lies in the sensors sending incorrect signals to the electronic control unit.

There are three sensors that may cause engine malfunction:

• Idle air control or IAC;
• Mass air flow sensor or mass air flow sensor;
• EGR.

If the check shows that the sensors are working properly, then the causes of the breakdown should be looked for in the spark plugs and air filter. And don’t look for the problem only in the sensor itself. It is possible that the wiring connecting it to the ECU is damaged.

Let's look at problematic sensors that potentially cause floating speed in more detail.

If your VAZ 2114 stalls at idle, and it has an injection engine, look for the problem first of all at the IAC sensor. It is mounted on the throttle body, so you can find it near the throttle position sensor . The element we are looking for is secured with two screws.

To check the IAC you will need a multimeter:

• Turn on the ignition;
• Disconnect the wiring block from the sensor;
• Using a multimeter, measure the resistance between the sensor contacts;
• The normal value is about 40-80 ohms;
• If the received data does not fall within the specified range, the regulator has failed;
• The only correct solution to the problem is to replace the sensor.

Next in line will be the mass air flow sensor. It is not uncommon for this to cause floating rpm at idle.

To check, you will also need a device called a multimeter. The voltage is measured between two contacts. The mass air flow sensor connectors are marked with green and yellow wires.

Mass air flow sensor

Before taking measurements, make sure that the engine is not running and the ignition is on. The normal range of the multimeter is 0.999-1.02V. If the data is different, the sensor is faulty . As in the first case, the device is replaced with a similar new one.

This valve is a sensor that belongs to the exhaust gas recovery system. The valve sends some of these gases into the combustion chamber, which ensures more efficient combustion of the fuel. Consequently, the level of toxicity of emissions into the atmosphere is significantly reduced.

The device has a simple design, but nevertheless, it is quite rare that it causes the phenomenon that we are considering today.

The valve seat must be cleaned periodically, otherwise it will negatively affect the stability of the injection power unit. If cleaning has not been carried out for a long time, correct the situation. To do this, use special sprays designed for cleaning the carburetor. Just make sure that the substance does not get on the sensor diaphragm.

Ignition module

As noted, in addition to the normal supply of fuel, a spark is required for the engine to operate. One of the elements in the car’s design that is responsible for sparking is the ignition module.

This element controls the ignition coil, and also sets the ignition timing and, if necessary, changes it. If the module malfunctions, the following symptoms are observed:

• “Trippling” of the motor;
• Misfires and error display in the on-board computer;
• The "Check Engine" light is on on the dashboard;
• Paired cylinders (1 and 4 or 2 and 3) do not work;
• Floating speed and difficulty starting a cold engine.

If a VAZ 2114 (injector) starts and immediately stalls, you should immediately check the ignition module for a malfunction. To check the version with a faulty module, you should install a known working MZ and make sure that it is faulty. If the problem continues, you should start checking the sensors.

Floating speed on the carburetor

On carburetor versions of the VAZ 2114 there is no electronic control unit as such. But this does not mean at all that the problem of floating speed is not alien to him.

Tachometer with high speed

Floating speeds do not occur as often as in the case of an injector, but still. The reasons, as well as troubleshooting methods, vary.

1. The idle speed is set incorrectly, or it got lost during operation. In such a situation, the setting shifts to combining the fuel-air mixture. Here you will need to adjust the speed to the range of 800-900 units.
2. The solenoid valve is faulty. The engine will only run if the choke is pulled out. If you remove it, the engine will immediately stall.
3. The idle jet or channels are dirty. In such a situation, the fuel lacks air. Clean the jet and the problem will go away.
4. Excessive air is sucked in. The mixture becomes leaner, so the engine sputters and stalls.
5. The level of gasoline in the float chamber increases or decreases.
6. The air filter is clogged. The problem is solved by simply replacing the element.

If engine vibration occurs at idle speed of the VAZ 2114, there is no need to worry. It's all about the design of the engine. A similar phenomenon is typical for carburetor engines during cold starts. The engine just needs to warm up to the optimal temperature, after which the vibrations disappear.

The reason for the vibrations is the air-fuel mixture , which is prepared by the carburetor before being fed into the combustion chamber. Low temperatures lead to inefficient combustion of the mixture. Hence the “shaking”.

Although it is not uncommon for vibrations to occur due to the cushions, that is, the engine mounts on which it is mounted. When they wear out, vibrations are possible. Moreover, this does not depend on what type of engine is used - injection or carburetor.

You should always pay attention to the floating speed of the VAZ 2114 and not wait for the problem to manifest itself in some other way. If you delay in identifying the causes and eliminating faults, repairs can be much more expensive.

Fuel pump

Without a stable fuel supply, normal engine operation is impossible. To ensure the engine starts, two factors are sufficient - the presence of a spark and fuel. The fuel pump is responsible for supplying gasoline. In model 2114 cars it is located under the rear seat and mounted directly into the tank.

There may be several reasons why the fuel pump failed:

• Clogged strainer on the fuel pump. In addition to the main fuel filter under the car tank, the pump design includes a mesh to filter fuel from debris. Over time, it becomes clogged, which is why the fuel does not flow in full;
• There is damage in the wiring or the fuel pump is turned off due to a loose connector. The problem can be solved by cleaning the contacts and checking the connection of the chips;
• Overheating of the electric pump is another cause of the stalling engine problem. It may overheat due to short-term and often repeated contact failures in the power supply circuits.

When looking for an answer to the question “VAZ 2114 starts and immediately stalls - what is the reason?”, the fuel pump should be checked first.

VAZ-2114 starts and immediately stalls: reason, how to fix?

Many drivers are faced with a problem when the VAZ-2114 starts and immediately stalls; the reason can be hidden in any little thing. This is a common situation that should not cause the driver to panic. This happens often, and it does not depend on how long your car has been in use. There can be many reasons for this, so you should be prepared for the fact that it will take some time. Sometimes the driver is not able to independently figure out the cause of such a failure, so it makes sense to contact experienced specialists at a car service center. Sometimes the problem lies in the type of engine or in late technical inspection. Typically, such problems arise abruptly and unexpectedly, and therefore can cause trouble for the driver.

What are the causes of car malfunctions?

If your car starts to have such a problem that it stalls as soon as it starts, then it’s time to take the car in for a technical inspection. In fact, there may be several reasons, and before identifying the true one, you will have to go through almost half of your car. Let's look at what you should pay attention to first.

1. The car alarm system is not working properly. Modern alarm systems that are connected to the central control unit have many additional gadgets that can negatively affect engine starting. Sometimes even electronics can malfunction and not work correctly. The auto program does not identify the start and stops the supply of electricity to the injectors, which, accordingly, deprives the spark (no ignition).
2. The idle speed control is inoperative. There can be two reasons for its incapacity - either it is too clogged, or it is not working and will need to be replaced. Poor quality fuel causes blockage and valve failure. Blockages clog the channels through which car mixtures along with oxygen must flow to the parts, this disrupts the ignition process.

To fix this problem, you will need the help of experienced specialists who will carry out ultrasonic cleaning.

Poor quality lubricants may also be the cause. Oil can remain on the cylinder walls and interfere with the normal stroke of the piston. To eliminate this problem, you need to change the oil after thoroughly flushing the engine. The fuel pump is unstable. The device will not have the necessary pressure for the system to operate smoothly, so the fuel supply will be intermittent.

1. Low quality fuel. This problem leads to engine detonation. The integrity of the heat pipes is compromised, and this leads to air leaks and dilution of the combustible mixture.
2. The gas exhaust system is clogged. Failure to remove excess gases will block the engine. This problem can only be fixed at a service station.
3. The fuel or air filter is clogged. If the filters are not kept clean, the system may also fail. It is necessary to monitor the filter parts and periodically clean or change them.
4. The oxygen sensor may fail and become one of the reasons that the car stalls. Correct operation of the sensor depends on the composition of the combustible mixture. If the composition is incorrect, the device will block further operation of the machine.

What do drivers recommend?

In addition to the basic rules for operating a car, while driving and repairing their car, each driver gains additional knowledge and experience.
Such nuances are learned as a result of mistakes made by the owner of the vehicle. Drivers share their experiences with each other, so you should also listen to the recommendations of car enthusiasts. All drivers claim that it is prohibited to disconnect the terminals from the battery, especially from the injectors. A low charge level has a bad effect on starting the engine. You should not disconnect the mass for a long time in modern cars. The electrical unit that controls the engine may delete all data due to a lack of power.

It is not recommended to use the charging-starting device frequently, since it produces too strong current fluctuations, which sometimes leads to the unit burning out.

From the above, it becomes clear that there are many reasons why a car may not start. Even an experienced car mechanic is unable to determine the breakdown immediately. Therefore, if you feel that you cannot cope on your own, feel free to contact a service station. If you still decide to figure it out on your own, then inspect every centimeter of your car. Step by step you will discover the true source of the problem.

Source

When cold, after the first start, the VAZ 2114 immediately stalls (solved) - 2 answers

Yes, this is not a normal phenomenon and is very bad, because it’s winter, and in severe frosts it happens that the battery energy for the first start in the morning is only enough for one attempt, and you need to be sure that your engine will start immediately after the first crank.

In order to eliminate the problem that you described in your question, you need to flush the throttle assembly and the idle air regulator (IAC). When asking such a question, people most often do not know what exactly needs to be done, where to start and how to finish the work, so I will describe the service process to you in as much detail as possible.

We are talking about this device installed on the intake manifold of your engine.

Few tools are required for this work: a Phillips and slotted screwdriver, and a 13mm socket. Also, be sure to buy a new gasket for the throttle assembly and a can of carb cleaner in advance.

.

This domestic cleaner will also work

Before starting work on the engine, first always disconnect the terminals on the battery (it is enough to disconnect one “negative”).

Next you need to remove the air duct running from the air filter to the throttle body.

To do this, loosen the clamps at the ends of this corrugated air duct (marked with blue arrows) and it will easily be removed. If it interferes here on the engine, then disconnect the breather hose and remove the air duct from under your hands

Disconnect the heating hoses supplying coolant (marked with yellow arrows). To avoid antifreeze leakage, leave the ends of the hoses in the upper position, or plug them with something (you can screw in bolts of a suitable size).

Disconnect the chips with wires for two sensors IAC and TPS

Also disconnect the crankcase ventilation hose from the throttle body, it is on the top, and remove the adsorber hose from the bottom. In order not to guess when assembling which hose to connect where, you can mark them with a marker, let’s say make a mark on one with one stick, on the other with two sticks, and leave the same marks on the throttle assembly, or else take a photo of this whole thing before disassembling (when washing the remote control marks may be washed off with solvent).

All that remains is to disconnect the throttle cable and unscrew the two nuts securing the remote control (do not lose the washers and spring washers (grower)

Well, now you can actually remove the throttle assembly itself from the studs. Unscrew the two IAC fastening bolts.

Fuel quality

Always watch what kind of gasoline you fill your car with. In most cases, all of the above symptoms appear as soon as you fill the tank with fuel. Of course, the engine may stall after some time. Therefore, it will be difficult to immediately determine the breakdown

It is also worth paying attention: the reason that the engine begins to stall or stall should always be sought in the gasoline itself. To cure this “disease”, you will need to completely drain the gasoline from the tank and also replace the fuel filter

Unfortunately, you don’t always buy high-quality fuel at gas stations. Therefore, it is worth choosing one brand of manufacturer that sells the highest quality gasoline. Of course, there are times when the car stalls while driving (the reason for this does not lie in gasoline). Please note that an excessively low price is the first sign that gasoline is of dubious origin. And pouring it into the tank is equivalent to driving a car at full speed into a pole.

VAZ 2114 starts and stalls immediately

Dear visitors of the site “Everything about cars”! We will be very grateful for your comments on the video clip “VAZ 2114 starts and stalls immediately”; registration is not required for this. We also ask you to let us know if you have any problems playing the video.

For some reason, it basically starts only 2-3 times.

05/09/2017 – 13:10 Antik Mpimov

I have a VAZ 2110 when cold, it starts for 5 seconds and stalls the second time, it starts for 20 seconds and stalls the third time it starts and works fine. please tell me what is the problem? 

05/07/2017 – 12:23 Alexander Bobrov

Same problem, stalls when first started in light frost. Then during the day, it always starts perfectly, which means it is not the ignition module. In the morning we will measure the pressure in the fuel system. I'll write about the results 

04/29/2017 – 01:36 Yuri Petrov

I have a 2114 ignition distribution module, I changed it because it breaks down and it looks like this - the car starts to stall in the literal sense of the word if you change the speed to 2500, if you spin it up, drive to the service center or store and there is no reason for it to stall. It's just that one of the cylinders won't work. the reason is much deeper. first of all, we look at the filter, then we look at the idle speed sensor, then when we turn the key, we look for the battery oil lamp and the check light to turn on. it failed next to the brains, there are three of them for the fuel fan and the top one can do the brain, whoever has an LPG, look at the throttle valve. The reason may be the air temperature sensor on the thermostat. This situation usually happens due to the fault of the electrician, go to a specialist who can reset everything, although you can reset it through the interior yourself by holding down the button on the dashboard and turning the ignition key. oh my god th constructor 

02.04.2017 – 13:29 Adilbek Kulakhmetov

Hi all. I have a Priora model with the same problem when cold it starts and stalls like this three times and everything is ok I still haven’t found the reason 2 times I went for diagnostics in different places they said there is no error we don’t know the cause the sensors are all normal the reason was never found everything was reprogrammed and the modules I changed the spark plugs and pump pressure, changed the fuel filter, cleaned the fuel pump mesh, all the faults are gone, and it doesn’t even bother me 

03.03.2017 – 09:55 Adilbek Kulakhmetov

Anyone who has encountered this, please let me know

02/22/2017 – 10:46 Vitaly GVS

Hello, subscribed. I hope for reciprocity. There will be many interesting videos on polishing, prev. sales and repairs in general. 

02/04/2017 – 22:46 Ovsiuk

gasoline distribution module

01/22/2017 – 14:19 Adilbek Kulakhmetov

The people found the reason. the reason was in the module, all four pods were replaced with new ones and the opals started up immediately without problems, but strangely the diagnostics did not show this. It turns out that although the module is working, the flow of current is lost there and in the cold the current flows poorly through it, that’s the whole problem. From the very first time it starts without problems, I advise you to do the same, and the date of gasoline also switched to another Euro 5. 

Self-diagnosis in the garage

If you have problems with the operation of the injection system, you should first diagnose the ECU. In this regard, the owners of the VAZ 2114 are more fortunate with the German VDO instrumentation - it has a self-diagnosis mode. On cars with a dashboard from Schetmash there is no such functionality.

VDO dashboard for VAZ 2114

Working with the self-diagnosis mode on the VDO panel is carried out according to the following algorithm:

• With the ignition off, hold the odometer button for several seconds;
• turn the ignition to position “1”, release the button;
• if the arrows start running on the display, everything is fine, press once (information message about the firmware version) and release, with a second press an error code will appear;
• You can reset the error by holding the button until “0” appears.

Injection problems that cause the car to stall can be indicated by the numbers 1 (ECU error), 14,15 (coolant sensor errors), 22, 23 (DPS errors), 33, 34 (MAF errors), 42 (ignition malfunction) , 44, 45 (lean or rich mixture). The disadvantage of self-diagnosis on the VAZ 2114 is that if there are several errors, the system sums up the codes. Thus, the number “22” may mean a TPS error or low on-board voltage and a coolant sensor error (8 + 14).

For more accurate diagnostics of the injector, you need to immediately contact a service center or purchase a diagnostic scanner (it costs about 1000 rubles).

If you have another car, you can find the problematic sensor by replacing the sensitive elements one by one with known good ones.

It starts and immediately stalls when starting a hot VAZ 2115

On a VAZ 2115, it starts perfectly when cold, but when starting hot, it immediately stalls. After it cools down, it starts without problems. What could be the reason?

Poor hot starting is one of the diseases of VAZ cars. Therefore, the question is very common. This happens due to the low quality of spare parts and some design features. It happens that the fuel pump is replaced with a new one, but it turns out to be faulty. “In search of a malfunction” everything is changed, and the problem is revealed already on the second round.

If the car does not start when hot, we recommend checking using the following algorithm:

1. Point for beginners. Make sure that the problem is related to the “hot” state of the car. Check the battery charge, make sure that the generator is charging (with a multimeter in voltmeter mode). Are there any problems with the starter? If it sometimes turns, sometimes it doesn’t, or occasionally turns poorly, take it to an electrician.
2. For everyone else. It is advisable to start repairs with diagnostics - it can help save money. A diagnostician will reveal approximately 80% of the causes of the problem, the faulty part will be replaced, and the car will drive and make you happy.

The rest of the information is for the remaining 20% ​​(diagnostics does not reveal problems) and those who do not have qualified specialists in the access area.

Impact of sensors

Most VAZ-2115 cars operate on the “January 5.1” controller. Crankshaft, temperature and throttle sensors are involved in starting the engine.

DPKV malfunctions usually appear regardless of temperature, but it is worth checking its resistance and comparing it with the data in the calibration table.

Sensors

In injection versions of VAZ cars, the engine design requires the presence of several important sensors. If the car does not start well when hot, the problem may be in one of the following sensors:

Failure of one of the elements is a problem for the driver. Let's look at the symptoms of malfunction of each of them.

The throttle valve is responsible for the flow of atmospheric air into the cylinder group, from which the fuel mixture is subsequently formed. The throttle position sensor transmits readings to the car's computer, which allows it to maintain stable engine operation.

Its malfunction manifests itself as follows:

Because the price of the new element is low - to solve the problem it is enough to install a new TPS. This part rarely fails, but if there are problems with unstable operation of the unit, it must be replaced as a preventative measure.

Another element responsible for reading the amount of incoming air is the mass air flow sensor. The cost of this sensor is quite high, so its malfunction is undesirable for any owner of the “four”.

If your VAZ 2114 starts up poorly and stalls, check the visual condition of the mesh inside the mass air flow sensor housing. Because It is located on the air filter housing - it is easy to get to. Rarely replacing the air filter and getting dirt and oil on the air flow sensor is a sure way to damage the sensor. Its malfunction manifests itself as follows: there is no stable idle speed; there is a failure during acceleration; there are problems with starting the engine (especially when “hot”). Often, cleaning the insides of the mass flow sensor housing with alcohol and a dry cloth helps to correct the situation. To accurately determine the serviceability of the mass air flow sensor, you should use a multimeter.

Important ! If it is necessary to replace the air flow sensor, take into account the part number, because on different versions of the “four”, an element with different settings was installed.

Monitoring the position of the engine crankshaft is an important point to ensure its stable operation. Responsible for this work is DPKV. Its failure is manifested as follows:

• Detonation sounds when the unit is operating;
• Increased fuel consumption;
• The engine does not start the first time;
• Errors 0335 or 0336 during diagnostics.

What are the causes of car malfunctions?

If your car starts to have such a problem that it stalls as soon as it starts, then it’s time to take the car in for a technical inspection. You will like several real reasons, and until you find the true one, you will have to go through almost half of your car. We will consider below where you should mainly pay attention.

See:

1. The car alarm system is not working properly. Modern alarm systems that are connected to the central control unit have many additional gadgets that can negatively affect engine starting. Sometimes even electronics can malfunction and not work correctly. The auto program does not identify the start and stops the supply of electricity to the injectors, which, accordingly, deprives the spark (no ignition).
2. The idle speed control is inoperative. There are possibly two reasons for its incapacity - either it is too clogged, or it is not working and will need to be replaced. Poor quality fuel causes blockage and valve failure. Blockages clog the channels through which car mixtures along with oxygen must flow to the parts, this disrupts the ignition process.

Fuel filter

Another important element in the fuel supply system to the engine is the filter. Low quality fuel and untimely replacement of the filter lead to its clogging. Gasoline enters the cylinders intermittently, which manifests itself in problems with starting and uneven engine operation.

The inconvenient location of the filter element makes it difficult to replace it, so many drivers postpone this procedure until next time. A clogged gasoline filter can also cause a loss of engine power. The problem is solved by replacement. You can also clean the tank as a preventative measure.

Important! When replacing the filter, pay attention to its direction. There are marks on the body of the part that show how to correctly install the element. Also, do not lose the copper rings to securely secure the tubes to the filter.

Wear of sealing gaskets

The design feature of the engine requires the presence of sealing gaskets. They make the engine structure more airtight. If the gaskets in the area of ​​the manifold or cylinder block are worn out or have lost their tightness, then when you press the gas pedal, the engine may stall.

If the gasket burns out, coolant penetrates into the engine in the area of ​​the cylinder block. In this situation, the engine continues to operate, but the number of revolutions decreases sharply. You may notice white smoke coming from the exhaust pipe.

The driver, faced with the problem of turning off the engine, finds himself in an extremely unpleasant situation. In order to eliminate this difficulty, you need to know the reason for its occurrence.