VAZ 2114 is a restyled model of the well-known “ten” or “Samara”. This car became widely known, so this brand of five-door hatchback can be found on the roads today, despite the fact that this car was removed from the production line several years ago.
This car has an electronic engine control system. Many people know that an injector of this type often begins to behave unpredictably. This usually happens when going to idle. As a result, the revs “float”, and the car owner cannot understand what happened to his beloved vehicle.
It is very difficult to immediately determine why the VAZ 2114 injector stalls at idle. As a rule, this requires diagnostic measures, which are best performed at a service center. However, you can try to understand on your own why the car stopped working as it should. Therefore, it is worth listening to the opinions of professionals who have encountered such malfunctions.
Regulator XX
This is one of the fairly common reasons why the VAZ 2114 injector stalls at idle. Regulators called XX or IXX are special devices that help control engine speed at idle. For the power unit to function properly, some air must pass inside. It, in turn, is detected by the mass air flow sensor, and the fuel controller supplies fuel based on sensor readings. Also, the number of revolutions is controlled by the DPKV. But it is the XX regulator that is responsible for the air supply, regardless of the operation of the air valve.
If an IAC system is installed in the car, then, as a rule, the car owner does not need to warm up the engine for a long time before starting to drive. However, this type of regulator is not capable of self-diagnosis. Therefore, if it fails, the VDO VAZ 2114 dashboard does not notify the driver that this unit needs to be checked.
Poor starting on a hot VAZ 2114
The VAZ 2115 starts ideally in the cold and when starting hot.
stops immediately. After cooling it starts without problems. What could be the reason? Bad hot
launch. one of the diseases of VAZ cars. Therefore, the question is very common. This is 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 "troubleshooting" things change and the problem is discovered in the second round.
If the device does not start hot, we recommend checking the following algorithm:
Topic for beginners. Make sure that the problem is related to the hot condition of the car. Check the battery charge, make sure that the alternator is charging (with a multimeter in voltmeter mode). Are there problems with the starter? If it turns, it doesn’t, or sometimes it turns poorly. take it to an electrician. For everyone else. It is advisable to start repairs with diagnostics. this will help you save money. Approximately 80% of the causes of the problem will be revealed by the diagnostician, the faulty part will be replaced and the car will drive away, and you're welcome.
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.
26 comments on “The VAZ 2114 car does not start when hot, but when driving everything is fine”
Ignition module! Try shooting it hot and cool.
I also had the same bullshit that the tags got confused over time
Look at the crankshaft sensor
Possibly the ignition switch.
READ Changing the Oil in a Ford Explorer 5 Box
try putting a cold cloth on it
So the fuel pressure
The sleeve (copper) in the bell is already broken and the starter stupidly bites (when it’s hot). This is only if everything is fine in the cold.
Antokha, it’s okay to start cold
Are the injectors clogged? try draining the fuel from the ramp and get to work
Measure the pressure in km, see Conditions
Miras, this is your 100% addiction. This happened to four last summer. Until it cools down a bit, does it start correctly? If you change it, it costs about 500 rubles. This is the reason
I had the same thing, only the reason was the fuel pump, I replaced it and everything is fine
Pennies are glued to the retractor, removed and cleaned, or a new retractor!
Andrey, that’s right, what kind of picture can I send?
Miras, here it is, I couldn’t take it off. There seems to be no way out without removing the starter itself. I poked for an hour and a half, went to work
Here with the starting ipos... First of all, understand, look, you shouldn’t change everything because of this.
what kind of starter do you have starter speed
the fuel pump does not create the required pressure, it seems to be checking
Crankshaft sensor see
Battery. It was exactly the same bullshit. I spent 2 months looking for the problem, they replaced everything, but it turned out to be the battery. I changed the battery and everything is fine
Where does a child's stimulating brain come from? The starter turns the engine, you can hear it perfectly
It's a shame that girls are smarter than boys. But aren't you ashamed?
see tags. the belt sound disappeared
Look at the sensor on the thermostat, this is the temperature, but it is also responsible for the rich and lean mixture of fuel, I suffered for a long time and for the first time changed 3 pieces (enough of the defects), I thought I could grab it from the sound, this is the sensor. if the belt fell, the sound would be different, because some valves are open, the starter would spin more easily, as if there were no compression. To check, try removing the chip from the sensor while it is hot and turn on the starter longer, it will start.
Too rich or lean mixture - air flow sensor
We mentioned above that problems with starting the car can arise due to a malfunction of the mass air flow sensor. mass air flow sensor. This element of the car is one of the most vulnerable to the environment, which is why they often talk about its breakdown. If it is very difficult to start the engine when hot, check the operation of this mechanism. This failure may also be accompanied by the following factors:
breakdown when pressing the accelerator pedal, lack of traction at certain moments; reduction in power or vice versa. an inexplicable increase in the potential of the unit; difficulty starting the engine and periodic moments of deformation; explosions inside the exhaust system when the accelerator pedal is sharply pressed; unstable speed due to periodic changes in mixture enrichment.
The fuel mixture of gasoline and air must have a certain consistency, which is formed by the mass air flow sensors and several other parts of your vehicle's electrical and electronic system. If these defects are faulty, you will have to change them and test the car, get the new equipment working.
Self-diagnosis of ICC
To understand that this particular unit is the cause of a stalled engine, it is enough to pay attention to several signs:
- The car's power unit stops working as soon as one of the gears is turned off.
- The revolutions begin to “float”.
- When XX is activated, the motor begins to malfunction.
- As soon as the car owner starts the engine when it is cold, it becomes impossible to increase the speed.
- When the driver turns on the headlights or other light optics, the engine speed begins to drop noticeably.
How to fix the situation
There are several manipulations that will help solve the problem that the VAZ 2114 injector stalls at idle if the IAC is the cause. First of all, you need to disconnect the control unit from the power supply and disconnect the terminal. After this, you need to pay attention to the distance between the flange needles (or rather, their ends) and the regulator. There should be about 2.3 mm between them.
In the next step, the battery terminals are put back into place. After this, you need to turn on the motor for 10 seconds. In this case, automatic calibration of the IAC should occur. If everything is in order, then after this the engine will start normally.
However, this is not the only reason that the VAZ 2114 starts up when cold and stalls almost immediately, or speed jumps occur.
Crankshaft position sensor
When the sensor fails, the speed on a cold engine fluctuates, and the operation of the motor as a whole is disrupted. The computer is not synchronized with the engine, which disrupts the supply of spark and fuel. If the speed starts to fluctuate, this is only the first sign of a malfunction.
You can only check the operation of the sensor using a multimeter, for this:
- Set the tester to a position with a maximum value of 200 mV;
- Connect the tester;
- Close the core with a screwdriver.
The readings of the device should be in the range from 550 to 750 Ohms. If any discrepancies are found, try cleaning the core and repeating the procedure; this may be the cause of the breakdown. Otherwise, only replacement.
Cleaning the throttle body
First you need to disconnect the clamps that secure the hoses going to the remote control. You will also need to remove the pads from several sensors, or rather, the IAC (if any) and the TPS. After this you need:
- Remove the accelerator cable.
- Remove the throttle assembly itself and assess its condition visually. Such self-diagnosis will help you understand whether the VAZ 2114 injector really stalls at idle due to remote control.
- Disconnect the IAC, which is located inside the throttle.
- Assess whether there is accumulated carbon deposits under the sensor. If it is not in the chamber itself, this does not mean that it is also clean under the regulator. As a rule, all cars with decent mileage accumulate a lot of carbon deposits.
- Clean the IAC needle using a specialized aerosol. You need to process all parts very carefully, and then wipe them dry with a clean cloth. You must act with extreme caution so as not to damage anything. Therefore, it is better if you have a compressor at hand.
If the Lada Samara has low mileage or the sensor has recently been cleaned, then problems may lie in other parts.
VAZ 2114 idle speed fluctuates: causes of malfunction and ways to solve the problem
Hello everyone, I want to share with you a problem: idle speed on the VAZ 2124.
My revolutions dropped, after the car warmed up, after re-gassing the revolutions dropped to 500 and returned to 1000. Many said that the idle speed sensor needs to be changed. I read on the forums that there are fakes everywhere, I didn’t bother and immediately went and bought myself an idle speed sensor.
If you look closely, there is a working out, the needle moves left and right, it spins. In my opinion, I paid 250 rubles for this sensor, as I later found out, the workmanship is very poor quality, there are gaps all around.
After that, I found the original sensor and paid 800 rubles for it. I changed the sensor, removed the throttle completely, disassembled and cleaned it. The only problem was that my breather was clogged and I cleaned it.
I thought that I would put it on now and start it. But it was not there. I went for diagnostics and they said that the sensor was lying. I came to a friend and together we installed a new sensor. It works perfectly, no errors, shows the norm.
The main problem turned out to be the absorber. It is designed to allow gasoline vapors that collect in the tank to be sucked through the absorber and through a hose to throw the vapors behind the manifold space. There is a tube coming from the damper. They stand without a filter.
After I removed the hose, the car started working differently. The turnover situation has disappeared.
I hope I helped you, bye everyone!
It is not so easy to immediately determine the specific reason why the VAZ-2114 idle speed fluctuates. Operating such a car is not only inconvenient (you have to constantly monitor the speed and keep your foot on the gas pedal, preventing the car from stalling), but also fraught with consequences, for example, engine water hammer. If you neglect this problem, you can get a serious engine malfunction, the repair of which will cost a tidy sum.
Air filter
If all the reasons described above do not apply, then you should pay attention to the filtration system. This unit also often leads to malfunctions.
On injection-type cars, filters are adjusted to an optimal and universal operating mode. This element is necessary in order to trap dust and dirt, but not impede the passage of clean air. Typically, small panel filters are installed in VAZs. They are considered more efficient and compact. However, cylindrical models are often installed in cars, which quite quickly cease to perform the task correctly. In this case, you will need a simple diagnosis of the VAZ 2114 car and replacement of the damaged element.
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.
The operation of the injection system has always been a weak point of VAZ cars. Low-quality gasoline, counterfeit consumables, inept repairs done by yourself or unprofessional service - the car stalls for any of these reasons.
On older cars of the Samara-1 generation, a similar problem was solved by adjusting the carburetor and ignition. Less commonly, replacing the fuel pump. The electronic injector of the VAZ 2114 is many times more reliable than a carburetor; it starts and works in any weather without causing any trouble.
But if the injection machine still stalls, there can be many reasons for this.
Repair
For self-diagnosis and repair, the air filter must be removed. It is not so difficult to do this on injection-type cars. To do this, you need to open the hood of the Lada Samara and disconnect the DRV.
After this, all that remains is to find the screws (usually there are four of them) that secure the filter and remove them using a shaped screwdriver. After this, you can easily remove the filter. At the next stage, all that remains is to assess how dirty it is and, if necessary, replace this element.
Fuel filter
This element acts as a fuel purifier that enters the engine. If the fuel mixture contains a large amount of dirt, various impurities and particles that should not enter the power unit, this can cause many problems.
If the fuel channel begins to become clogged, the XX sensor will not be able to work correctly. Therefore, this will lead to the VAZ 2114 injector stalling when cold. If the problem is not corrected, the situation may only get worse.
Replacing the fuel filter yourself
Before performing work, it is necessary to drive the car onto an overpass or pit. After this, you need to find the necessary filter. In this car model, it is located under the bottom of the vehicle behind the fuel tank, next to the muffler. After this, you should unscrew several fittings (pipes). It is best to do this using key number 19 M.
If everything is done correctly, the filter can be easily removed. You just need to remember which side it was installed on. After this, it is enough to put the new filter in the same place in the correct position.
If the VAZ 2114 stalls, there may be other reasons. Therefore, it is worth considering them in more detail.
Injection system
If you contact a specialized service center, specialists will definitely check this unit for serviceability. Therefore, when self-diagnosis, this is also taken into account. Often errors in the operation of the power unit are associated with hydraulics. Some of its parts may work correctly, but if the so-called coking of the injectors occurs, then problems cannot be avoided. As a rule, the cause of this phenomenon is low quality fuel. If it contains impurities that cannot dissolve, then all these particles begin to settle on the injection elements. In the first few minutes of engine operation, this problem becomes most obvious.
Although car owners often complain that the car stalls in neutral, engineers have not been able to improve the injectors. It is impossible to completely get rid of sedimentation. In this case, problems often arise not only with cold, but also with hot injectors.
Troubleshooting options
It is clear that if any emergency situations arise with the motor, it is advisable to contact a specialized service. However, this procedure is not always possible. Therefore, it is worth knowing how to independently diagnose the main systems and key parts.
Throttle valve and assembly
When the speed drops at idle and the car stalls, you need to pay close attention to the details of the throttle assembly. Long-term operation of the car on low-quality fuel and untimely maintenance of the air filter can lead to malfunctions of the throttle valve. It periodically jams if debris gets into the equipment
It periodically jams if debris gets into the equipment.
Throttle valve VAZ 2112
The problem can be solved by cleaning the system. The throttle is cleaned using carburetor cleaners. Using a compressor, you need to blow out the damper under the pressure of compressed air. It is not recommended to touch the screws located inside and on the side. If cleaning does not correct the situation, the device must be replaced. This operation is not particularly difficult.
Crankcase malfunction
There is an oil trap in the crankcase ventilation system of the engine. Its contamination can also lead to interruptions in engine operation. Crankcase gases do not allow the engine to function normally, the speed fluctuates, the internal combustion engine stalls.
Sensors
If a gasoline car stalls at idle, then one of the sensors is likely to break. In injection cars with an electronic engine control system, the engine usually starts normally, but then it stops working. It's worth checking here:
- Electronic car indicators;
- DRХХ – device that regulates idle speed;
- Air flow meter (air intake in the carburetor);
- Sensor indicating the position of the throttle curtain.
Electronic control unit in VAZ 2114
Interruptions in the operation of any sensors immediately affect the behavior of the electronics - errors appear in the car control unit. The “brains” of the machine receive unreliable information. It is not transmitted correctly to the engine. It starts working with parameters that do not correspond to reality. Self-testing of this device is not possible. You need to contact a professional for service.
Diagnostics of mass air flow sensor
The idle air control device is usually to blame for engine malfunction when the car idles poorly. But you pressed the gas pedal and the engine started. In the latest VAZ modifications, error information appears on the instrument panel.
When diagnosing, you must use a multimeter. If a part is faulty, it is recommended to replace it with a new one. All sensors are reasonably priced. It is better to start checking with parts that have a simpler design. Then gradually move on to complex devices. We must not forget that the problem may lie not only in the sensors themselves. It is also necessary to check the wiring to them and the presence of stable contact.
Carburetor
If the VAZ carburetor stalls at idle speed, then the jets may become clogged. Low-quality gasoline, deposits from the gas tank, contain small particles of debris. They can easily disrupt the operation of the fuel injection system. It is worth replacing the filter in front of the carburetor and cleaning the device itself. The dispensing part is cleaned using a cleaning solvent, which is sold in aerosol cans. Another reason is often a prolonged lack of carburetor adjustment.
In a mechanical fuel pump of carburetor cars, the filter mesh may be clogged with dirt. This reduces the performance of the device. Wear of the membrane and its destruction often leads to clogged carburetor channels.
Injector
A situation that often arises is that various Lada models, as well as the VAZ 2110 injector stalls at idle. It is necessary to check the fuel pump strainer for clogging. This is a common problem with injection machines. It is better to immediately replace the part with a working one.
Filter problem
If the VAZ 2112 stalls at idle, then the fuel filter may be dirty. This also applies to other models of the concern. Generally, it is not practical to clean it. The part must be replaced. The same should be done with a dirty air filter. Low throughput leads to the fact that the air-fuel mixture simply floods the spark plugs.
Self-checking will not always lead to a positive result. It is often more practical to identify the cause of unstable operation of the internal combustion engine at a car service center. It will cost more, but specialized diagnostics will prevent more serious damage to the car.
Other reasons
First of all, you need to understand that a lot depends on how cold it is outside. If there is severe frost, it is not surprising that an unheated engine will malfunction. Therefore, you have to constantly keep your foot on the gas pedal.
Sometimes the problems are related to the spark plugs. Therefore, it is recommended to check them. You need to understand that these elements do not have a long service life. Therefore, if the car has quite an impressive mileage, then perhaps it is the spark plugs that have become unusable. Soot may settle on them. This often leads to irreversible damage to the elements.
If problems arise specifically with the spark plugs, then you need to find the damaged one and replace it. To do this, it is not necessary to seek help from a specialized center. All necessary work can be done independently.
Problems with engine activation can also arise due to problems in the ECU. It is also worth checking the quality of all connections. There is a risk that the wiring of the VAZ 2114 injector has been damaged. Therefore, it is worth making sure that it is in good working order.
It is also recommended to pay attention to the vehicle's exhaust gas recirculation valve. In this case, a cold engine will stall. To correct the situation, it is enough to replace the faulty unit.
High engine speed at idle: injector
Engine speed and operation at idle actually means that air is supplied to the engine bypassing the throttle valve. In other words, at idle the specified damper is closed. Note that the normal idle speed for different units is about 650-950 rpm. In parallel with this, a common malfunction is that when the engine is warm, the idle speed remains at around 1500 rpm and above. This indicator is a sign of a malfunction that should be eliminated.
It should also be noted that the idle speed “floats”, that is, for example, it increases to 1800 rpm, after which it decreases to 750 and increases again. Very often, increased idle speed and floating speed are the result of the same breakdowns. Let's take a look at a gasoline-injected unit as an example. In such an internal combustion engine, engine speed depends on the amount of intake air. It turns out that the more the throttle valve opens, the more air enters the intake manifold. Then the ECU determines the amount of incoming air, simultaneously takes into account the throttle opening angle (throttle position) and a number of other parameters, after which it supplies the appropriate amount of gasoline.
Another case is when the engine keeps the idle speed at about 1500-1900 rpm, while running smoothly, the speed does not fluctuate. In this case, we can assume that the injector supplies enough fuel in idle mode that it is enough to operate at such high speeds. In other words, there is excessive fuel consumption. These features may be typical for some engines and absent for others, since there is a dependence on the design of a specific injection system (units with an air flow meter, engines with a pressure sensor in the intake manifold). It is obvious that air leaks are a common cause of increased engine speed or floating speed at idle.
Now let's figure out where excess air can enter the intake. You should look for the problem in four main directions:
- throttle valve;
- channel XX;
- device for maintaining “warm-up” speed;
- servomotor for forced increase in speed XX;
As for the first case, the opening of the throttle valve is controlled by the gas pedal. At idle, the engine should run without pressing the accelerator. It is worth considering that on many cars the gas pedal is mechanical, that is, it is connected to the throttle opening mechanism with a regular cable. If this cable is soured, kinked or overtightened, and problems arise with the mechanism itself, then a banal effect of pressing the gas pedal may occur. In this case, the engine will maintain increased speed, since the ECU believes that the driver is pressing the accelerator and the throttle is slightly open.
In the second case, excess air can pass through the idle passage. Such a channel is available on the vast majority of injection internal combustion engines. This air channel bypasses the throttle valve and is called the idle channel. The implementation of the circuit has a special adjusting screw. Using this screw, you can change the cross-section of the channel, thereby increasing or decreasing the amount of air entering the engine and adjusting the idle speed.
As a result, the ECU calculates the amount of air, reduces the amount of fuel supplied and the speed decreases. If the engine is cold, this channel is initially open. In this case, the ECU receives readings from the temperature sensor and enriches the fuel mixture. Problems with speed can arise either as a result of the failure of this device or after a malfunction of the temperature sensor.
The list is completed by a special servo device - the idle air regulator, which is installed in a separate air channel. This solution can forcefully increase idle speed. In various circuits, this could be an electric motor, a solenoid, a version of a solenoid valve, etc. The main task of such a regulator is to ensure a smooth transition of the engine to idle mode after releasing the gas pedal. In other words, the engine does not suddenly reduce speed after closing the throttle, but gradually. Another function of the device is to increase idle speed when the engine starts, and then smoothly reduce it to the required speed. The regulator also increases the speed after increasing the load on the internal combustion engine in idle mode (turning on the air conditioning system, heated seats or mirrors, high or low beam headlights, side lights, etc.). Failure of this device will naturally lead to an increase or floating of idle speed.
Diagnostic features
It is worth considering that there are no exact sequential actions by performing which it will be possible to accurately determine the cause of the malfunction. If the power unit stalls only occasionally, then the situation may not be that serious. There is a chance that this is how the vehicle simply reacts to severe frosts. However, if you have recurring problems, you should contact a specialist.
It is best if the mechanic connects a specialized diagnostic device to the car at a car service center. He will determine exactly where the breakdown occurred and which element should be replaced. Of course, if the car owner has enough knowledge, he can identify the problem on his own. But you need to understand that if such a diagnosis was performed incorrectly, this can lead to more serious consequences. In this case, the final repair of the car will be much more expensive. Therefore, you should think several times before saving.
Visiting a car service center
In a situation where you specifically do not have enough experience in car maintenance, there is a fairly high probability of aggravating the problem by unqualified intervention in the operation of various on-board systems.
It is important to objectively assess your own capabilities, and if you don’t have faith in yourself, then it is better to entrust the repairs to specialists. In a situation where it turns out that the problem is not particularly serious, they will not take much money from you. But in any case, you will be able to avoid many of the troubles associated with unqualified attempts to repair the vehicle.
