The lubrication system of an internal combustion engine performs four main functions: it reduces the friction force between the mating elements of the power unit, cools them, protects them from corrosion and cleans them of fuel combustion products and wear. To perform these functions, a certain oil pressure is maintained in the engine. Insufficient or excessive pressure will lead to rapid wear and destruction of rubbing parts. Pressure control is carried out using a special sensor and indicator (control lamp on the dashboard). We will tell you when this indicator lights up and what actions the car owner should take.
The VAZ-2115 oil light is on
February 6, 2015, 16:34 #1
Good afternoon everyone. I have a VAZ2115. After the engine warms up, the oil light on the instrument panel lights up. When driving at speed, the lamp does not light up and comes on again at idle. Oil level is normal. Tell me what could be the reason and whether it is possible to drive a car.
Eastern region of Voronezh region
6 February 2015, 17:09 #2
There is only one reason, engine wear. You can ride, but the question is how long. Try changing the oil and filter. Maybe it will help. Measure the oil pressure with a mechanical pressure gauge.
VAZ 2131 Antel Ford Focus
February 6, 2015, 18:03 #3 + 1
ajirkov36, February 6, 2015, 17:09, #2
There is only one reason, engine wear. You can ride, but the question is how long. Try changing the oil and filter. Maybe it will help. Measure the oil pressure with a mechanical pressure gauge.
Andrey, the question asked by the topic master is completely hackneyed. These are the basics of car enthusiasts, this is where training in driving schools begins. Not knowing these basics, well, what can I say? They have created more consumers, etc. V
Skoda Octavia A7 1.4 TSI DSG
6 February 2015, 18:17 #4
Denis 318, February 6, 2015, 16:34, #1
Good day to all. I have a VAZ2115. After the engine warms up, the oil light on the instrument panel lights up. When driving at speed, the lamp does not light up and comes on again at idle. Oil level is normal. Tell me what could be the reason and whether it is possible to drive a car.
Check the oil pressure, maybe change the oil. pump
13 February 2015, 19:23 #5
Denis 318, February 6, 2015, 16:34, #1
Good day to all. I have a VAZ2115. After the engine warms up, the oil light on the instrument panel lights up. When driving at speed, the lamp does not light up and comes on again at idle. Oil level is normal. Tell me what could be the reason and whether it is possible to drive a car.
maybe just the Khan oil pressure sensor. Another option is to wash the oil separator screen on the valve cover
Sverdlovsk region. Kamensk-U
Daewoo Matiz 0.8 Mx
February 14, 2015, 07:34 #6
Denis 318, February 6, 2015, 16:34, #1
Good day to all. I have a VAZ2115. After the engine warms up, the oil light on the instrument panel lights up. When driving at speed, the lamp does not light up and comes on again at idle. Oil level is normal. Tell me what could be the reason and whether it is possible to drive a car.
Check the breather to see if there is smoke in it when the engine is running, if so, then this is engine wear and the oil is diluted with gasoline, and the main thing is to check the compression.
How does the oil pressure indicator work in the VAZ 2114/15
The oil pressure indicator warning lamp in VAZ 2114/15 cars is located in the lower left corner of the dashboard and is shaped like an oil can. In normal mode, it lights up for a few seconds when the engine starts and goes out. The lamp is an indicator of the oil pressure sensor, with which it is connected via the electronic engine control unit. The sensor is installed in the upper part of the cylinder head (on the rear side of the engine). Its main element is the membrane. When pressure changes, it bends, closing and opening contacts. When the ignition is turned on, the pressure is low because the engine is not yet running. The light comes on. After starting the power unit, the oil pump starts working, pumping lubricant into the system. At the same time, the pressure increases, the membrane bends and opens the contacts. The light goes out.
A burning oil pressure light may indicate a malfunction in the engine lubrication system.
Operating principle of the lubrication system
Lubrication of moving engine components occurs according to the following principle: oil gradually flows into a recess located in the sump, after which it is sucked in by an oil pump, passed through an oil filter and again supplied to the loaded components.
The latter include:
- crankshaft plain bearings;
- cylinder walls;
- cylinder head;
- all gear mechanisms.
A sensor that monitors oil pressure is installed at the top of the cylinder head, at the point where the lubricant passages end. Thanks to this, the sensor monitors the oil at all stages of its movement, starting from the oil pump and ending with the camshaft.
The design of the ODM itself (oil pressure sensor) includes only three main parts - its housing, electronic contacts for signal transmission and a sensitive membrane. Depending on the oil pressure, it either closes the electrical circuit or opens it. If the pressure is less than the permissible threshold (0.65 Bar), then the sensor is triggered and the oil light for VAZ 2114 lights up on the panel.
Reasons why the indicator light may come on
The indicator light can light up both while driving and at idle speed. Before making assumptions about the causes of possible malfunctions, you should observe the behavior of the light bulb. If it lights up periodically and only while driving, the problem should be looked for in the sensor wiring. If the lamp lights up when the engine is idling and does not go out, this may be due to:
- faulty pressure sensor;
- low oil level;
- too liquid (not corresponding to the class or expired) oil;
- oil pump malfunction;
- oil filter wear;
- contamination of the oil receiver mesh;
- wear of the crankshaft liners.
Let's consider each of these situations in more detail.
Sensor Wiring
Flashing of the indicator light while driving may be due to damaged insulation of the sensor wire. The wire, under the influence of vibration, shorts to the ground of the car, which causes the sensor to operate. This problem can be eliminated by thoroughly inspecting the wiring and replacing the damaged section.
One of the reasons for the light to come on may be damage to the pressure sensor wiring.
Features of diagnostics
Before carrying out diagnostics, it is recommended to conduct a visual inspection of the device for damage to the controller housing, stains from fluid leaking from the motor and other changes.
If oil traces are detected, you need to make sure that the malfunction is in the sensor; inspecting the power unit will help make sure of this. When consumables leak from the regulator, the cause of the problem is related to wear on the seal. And if oil dripping occurs from the terminal connectors, you cannot do without replacing the controller. To more accurately determine malfunctions during the operation of the device, diagnostics using a voltmeter will help:
To do this, you will need a pit or overpass and follow the following instructions:
- unscrew the bolts securing the protective coating of the unit;
- dismantle the protection;
- if DDM is detected, start the engine;
- disconnect the power cord from the device;
- use a tester to diagnose the voltage (voltage norm is 12 volts).
If the voltage is low, the cause of the malfunction is the display unit or the contacts of the electrical circuit, as well as its break.
Useful tips
To prevent problems associated with a drop in oil pressure, the following recommendations should be followed:
- Fill the engine with oil recommended by the car manufacturer, paying attention to the viscosity grade.
- Change the oil and oil filter in a timely manner.
- Do not use non-original spare parts for repairs.
- At least once a quarter, carry out diagnostics of the lubrication system with mandatory pressure measurement.
- If the pressure indicator light comes on, do not operate the vehicle until a complete diagnosis has been carried out.
Ignoring the oil pressure indicator signals can have serious consequences for the car engine. Any malfunction of the lubrication system can lead to a major overhaul of the power unit. Try to keep it in working condition and pay attention to all signals given by the indicator light.
The oil pressure light is on. Looking for a reason
Hello.
I have a VAZ 2115, injector, 8 cells. 2002 204000 km mileage. The engine already feels worn out. Help me to understand. I had the following situation: after 8000 km I buy the same oil (zik 10w-40) and filter. After changing the oil everything was fine. I drove around the city for about 2 weeks (I drive about 20-30 km every day) and when I started the engine in the morning, the oil pressure light started to stay on for about 3 seconds.
Then every day it gets longer and longer. As a result, I came to the conclusion that when I started it in the morning, it was on for about 12 minutes. Then I drove along the highway for a distance of 100 km. Along the way, the light began to flash and eventually came on. I turn off the engine, wait a couple of minutes, then start it and the light goes out. Then after a while it flashes and lights up again. First I tried replacing the oil filter. Did not help.
Then I tried replacing the oil pressure sensor. We took it from a friend from his working car, put this sensor on my car and everything is the same: The lamp lights up when the engine starts, then goes out after a while. Then I removed the valve cover and washed it well. Then he removed the multilayer mesh from it, soaked it in kerosene, rinsed it well, cleaned it and put it back. This seems to have helped quite a bit, but the problem remains.
Then I went to a garage mechanic I knew and we screwed in a pressure gauge instead of the oil pressure sensor. Cold engine pressure 3.5; on hot 2.4. He said this is the norm. But the problem remains. It doesn’t seem to have been damaged by the pallet, so it should be intact, and besides, there is protection. Now I'm going to remove the oil pan and look at the degree of contamination. And also wash the pan and oil intake. Has anyone encountered this problem? Tell me what to do? By the way, I’ve been driving like this for about 3 weeks now. The engine hasn’t knocked yet)))
Add a comment Cancel reply
Car sections
The most interesting things on the site:
Why the oil pressure light on the VAZ 2114/2115 is on: reasons and solutions
One of the parameters of engine operation is oil pressure. To ensure uninterrupted and high-quality functionality of the power unit, each driver must constantly monitor the maintenance of the required oil level in the engine. If the oil pressure light comes on on the dashboard of a VAZ 2114/2115, you must immediately take some action. The indicator will light up in cases where there are certain problems with the oil pressure in the engine unit system.
Why does the oil pressure light come on in the VAZ 2114/2115
There are several likely reasons why this car light suddenly comes on. And only based on an accurate determination of the cause can the necessary actions be taken to eliminate the malfunction.
The indicator may light up in two cases:
at engine idle speed;
when the car is moving.
Each of these cases has its own causes of malfunctions.
The indicator in the form of an oil can lights up in situations where there is any problem with the oil pressure
The light came on at idle
The oil pressure light may come on (or blink) at idle, and if you press the gas pedal, the icon will immediately go out. In this case, the most likely causes of malfunctions are the following:
the crankshaft liners are worn out: the oil pressure will drop due to the fact that the gap between the thinned liner and the car’s connecting rod has increased;
the oil receiver mesh is severely clogged: one of the most common reasons why a light bulb suddenly lights up. Various types of sediment are gradually deposited on the surface of the engine sump. At the moment when there are too many deposits, the pump can no longer supply enough oil to operate the engine;
wear or any problems in the oil pump: another probable reason why the indicator may light up on a VAZ 2114/2115. Due to a breakdown of the pump itself or any part of it, oil does not enter the engine in the required quantity;
the sensor is faulty: it is quite possible that the oil level and the engine itself fully meet their basic characteristics, and the problem lies in the sensor;
the wiring is shorted: problems in the car’s electronic system can also cause the engine oil supply system to not operate correctly.
The oil can indicator light came on while driving.
In cases where the oil pressure light suddenly comes on while the car is moving, it is advisable to stop immediately. Probably the following failure or breakdown occurred:
the oil level in the engine unit is below the Min mark;
the oil filter could be clogged - this leads to the fact that the pressure invariably decreases;
it's time to change the oil - in cases where the car owner does not replace the substance in the engine for a long time, it loses its working properties.
Causes of problems
The lamp indicates problems with insufficient oil pressure in 2 ways: flashes periodically or is constantly on.
If the lamp blinks periodically, the reasons may be as follows:
The first 3 reasons arise due to negligence in servicing the power unit. When the oil is not changed on time, it loses its lubricating properties and its fluidity is more like water, causing the pressure in the system to drop. For the same reason, a lot of dirt accumulates in the oil pan, clogging the oil filter and the oil intake screen. The problem is solved by removing the pan and pump, cleaning and flushing the system with a complete oil change.
When the spark plugs do not function well and misfire (they flash every once in a while), the fuel mixture that enters the combustion chamber is not burned, but flows into the crankcase. The longer you drive on bad spark plugs, the more gasoline ends up in the crankcase and dilutes the oil.
It doesn’t matter what kind of fuel supply system you have - carburetor or injector
The presence of fuel in the oil is easy to determine: with the engine running, you need to remove the crankcase ventilation pipe and carefully sniff the smoke or insert a gas analyzer probe into it. You will feel the smell of gasoline immediately, and the gas analyzer will show the presence of CO in the exhaust gases. The issue is resolved by immediately replacing the spark plugs (sometimes along with high-voltage wires) and engine lubricant. Short circuits in the wires are detected by testing with a special device, and when it is not there, they simply need to be changed.
If the red oil level lamp of the VAZ 2114 is constantly on, then one of the following malfunctions is evident:
- the crankshaft plain bearings are completely worn out;
- oil pump failure;
- loss of a significant part of the lubricant;
- problems with electrical wiring;
- failure of the pressure sensor.
The last fault is the most harmless and is detected using a new sensor. Another option is to find a mechanical pressure gauge with a tube and, screwing it into place of the sensor, briefly start the engine. If the pressure gauge shows at least 1 bar, the motor is fine, and the bad part needs to be replaced.
Only opening the engine will help you deal with the liners and the oil pump. Perhaps the screen in the oil pump is clogged or the gear pair has a large output. The wear of the main and connecting rod bearings is determined visually, and the wear of the crankshaft journals is determined using measurements. Electrical wiring faults are rare and are usually caused by old wires whose insulation has become unusable.
What to do when the oil pressure light is on in a VAZ 2114/2115 car
Depending on the cause of the malfunction, the driver’s actions will differ when this indicator lights up.
If the oil pressure light in a VAZ 2114/2115 lights up when the engine is fully warmed up and the car is stopped (idling), the following actions will be required:
If the cause of the malfunction is wear of the crankshaft liner, serious car repairs will be required. Depending on the general condition of the machine, you may need either a complete replacement of the crankshaft, or large-scale repair of the shaft and replacement of the bearings with new ones. It is advisable to contact a car repair shop.
In the event that the oil pressure has dropped due to debris and deposits in the receiver grid, each driver can independently eliminate the cause of such a malfunction. It is necessary to clean the mesh and also remove accumulated debris and adhered dirt from the tray. It is also recommended to flush the engine with special flushing oils at the next oil change.
A faulty oil pump can only be removed in one way - by replacing the pump itself. If the car owner does not understand the design features of the VAZ 2114/2115, then it is also better to seek help from specialists.
If the oil pressure sensor is faulty, it is also recommended to replace it. It should be noted that recently, more and more often, owners of domestic cars are diagnosing problems with pressure sensors. This is explained by the fact that auto shops and car markets often sell spare parts of dubious quality.
It is better to entrust the search for a short circuit in the wiring to an auto electrician.
Video: the oil pressure light came on at idle, what to do
However, what should be done if the oil pressure light comes on while driving? The first step is to stop on the side of the road or in any convenient place where the car will not become a hindrance to other road users:
After stopping, it is advisable to check the oil level in the engine unit. It is quite possible that its level is below the Min mark, which is why the indicator in the cabin came on. It is necessary to add working fluid and continue driving. If the light comes on due to lack of oil, then the problem is considered solved.
The light may come on immediately after replacing the oil with a new one. This is a completely normal situation. You must wait 20 seconds - the indicator should go out.
If the indicator does not go out, the cause of the malfunction lies in a poor-quality oil filter. We'll have to replace it.
Video: the oil pressure light came on while driving, what to do
We fix problems ourselves
The oil can icon may not light up for various reasons:
- wiring problems;
- malfunction of the sensor itself;
- the indicator light has burned out;
- The fluidity of the oil is temporarily impaired due to low temperatures and prolonged storage.
The first three reasons can be considered a signal to action, since they must be eliminated as soon as possible for safe operation of the machine. The fourth reason has only one way out - start the engine and wait for the oil to spread throughout all components and parts.
The first indicator on the left shows malfunctions in the engine lubrication system
Preparing tools for repair
To troubleshoot the oil pressure light, you may need the following tools and devices:
- screwdriver with a flat thin blade;
- pressure gauge;
- new indicator light;
- wires;
- sensor.
Operating procedure
First of all, car enthusiasts are advised to start by inspecting the sensor and its connector, and only then move on to solving other issues.
If the sensor has a whole body and the connector is connected correctly, then it is recommended to check other elements of the system
To make it easier to find a fault, it is better to adhere to the following operating scheme:
- Check the connector that connects to the oil pressure sensor. As a rule, the sensor is located on the engine cylinder block, usually on the rear side. You can find out the exact location of this element in your car's manual. It is recommended to remove the connector, make sure that it is clean and free of dirt, and then connect it back. If this simple procedure does not help, move on to the second point.
- Measure the oil pressure with a pressure gauge. It should be within the range specified in your vehicle's owner's manual. If this is not the case, change the oil pressure sensor.
- After this, you can remove the wiring from the sensor and connect it to the engine ground. If the oil can in the passenger compartment does not start to burn, then you will have to check the entire wiring or change the indicator light.
- It is easier to replace the light bulb on the indicator - it is quite possible that it has simply burned out, and therefore does not light up at those moments when it is necessary. It is enough to remove the protective strip from the instrument panel, unscrew the old lamp and insert a new one.
- If this does not help, then the last chance to fix the problem is to replace the wires. You can usually visually notice abrasions or breaks. It is recommended to immediately replace the entire wire rather than trying to rewind it with electrical tape.
Why the oil pressure light on the VAZ 2114/2115 is on: reasons and solutions
One of the parameters of engine operation is oil pressure. To ensure uninterrupted and high-quality functionality of the power unit, each driver must constantly monitor the maintenance of the required oil level in the engine. If the oil pressure light comes on on the dashboard of a VAZ 2114/2115, you must immediately take some action. The indicator will light up in cases where there are certain problems with the oil pressure in the engine unit system.
Why does the oil pressure light come on in the VAZ 2114/2115
There are several likely reasons why this car light suddenly comes on. And only based on an accurate determination of the cause can the necessary actions be taken to eliminate the malfunction.
The indicator may light up in two cases:
at engine idle speed;
when the car is moving.
Each of these cases has its own causes of malfunctions.
The light came on at idle
The oil pressure light may come on (or blink) at idle, and if you press the gas pedal, the icon will immediately go out. In this case, the most likely causes of malfunctions are the following:
the crankshaft liners are worn out: the oil pressure will drop due to the fact that the gap between the thinned liner and the car’s connecting rod has increased;
the oil receiver mesh is severely clogged: one of the most common reasons why a light bulb suddenly lights up. Various types of sediment are gradually deposited on the surface of the engine sump. At the moment when there are too many deposits, the pump can no longer supply enough oil to operate the engine;
wear or any problems in the oil pump: another probable reason why the indicator may light up on a VAZ 2114/2115. Due to a breakdown of the pump itself or any part of it, oil does not enter the engine in the required quantity;
the sensor is faulty: it is quite possible that the oil level and the engine itself fully meet their basic characteristics, and the problem lies in the sensor;
the wiring is shorted: problems in the car’s electronic system can also cause the engine oil supply system to not operate correctly.
The oil can indicator light came on while driving.
In cases where the oil pressure light suddenly comes on while the car is moving, it is advisable to stop immediately. Probably the following failure or breakdown occurred:
the oil level in the engine unit is below the Min mark;
the oil filter could be clogged - this leads to the fact that the pressure invariably decreases;
it's time to change the oil - in cases where the car owner does not replace the substance in the engine for a long time, it loses its working properties.
Replacement
Replacing the oil level sensor on a VAZ 2115 is carried out using the same algorithm as on a VAZ 2114.
The procedure itself is quite simple if certain conditions are met. First of all, the car is installed on the inspection hole. Then the following steps are performed:
- The engine is stopped and the battery terminals are removed.
- The engine compartment protection is removed.
- The tip of the wire is removed from the block, which is located near the filter.
- Use a rag or cloth to clean the sensor.
- Using a socket wrench, the element is unscrewed from the mounting location.
- The sensor is removed carefully. Care must be taken to ensure that the float is not damaged.
- A new device is being installed.
If, after replacement, a leak reappears in the area where the DDM is located, then the excess pressure relief valve has probably failed. The latter is attached to the oil pump. This malfunction must be corrected within 2-3 weeks, otherwise other elements will fail in the future. In particular, the oil pump will be first in line.
All motorists should remember that the presence of oil in the engine is the key to long service life of the power plant. If leaks occur, they should be corrected in a timely manner by replacing filters, rings and other components. The oil level is monitored by appropriate sensors that indicate insufficient lubricant.
What to do when the oil pressure light is on in a VAZ 2114/2115 car
Depending on the cause of the malfunction, the driver’s actions will differ when this indicator lights up.
If the oil pressure light in a VAZ 2114/2115 lights up when the engine is fully warmed up and the car is stopped (idling), the following actions will be required:
If the cause of the malfunction is wear of the crankshaft liner, serious car repairs will be required. Depending on the general condition of the machine, you may need either a complete replacement of the crankshaft, or large-scale repair of the shaft and replacement of the bearings with new ones. It is advisable to contact a car repair shop.
In the event that the oil pressure has dropped due to debris and deposits in the receiver grid, each driver can independently eliminate the cause of such a malfunction. It is necessary to clean the mesh and also remove accumulated debris and adhered dirt from the tray. It is also recommended to flush the engine with special flushing oils at the next oil change.
A faulty oil pump can only be removed in one way - by replacing the pump itself. If the car owner does not understand the design features of the VAZ 2114/2115, then it is also better to seek help from specialists.
If the oil pressure sensor is faulty, it is also recommended to replace it. It should be noted that recently, more and more often, owners of domestic cars are diagnosing problems with pressure sensors. This is explained by the fact that auto shops and car markets often sell spare parts of dubious quality.
It is better to entrust the search for a short circuit in the wiring to an auto electrician.
Video: the oil pressure light came on at idle, what to do
However, what should be done if the oil pressure light comes on while driving? The first step is to stop on the side of the road or in any convenient place where the car will not become a hindrance to other road users:
After stopping, it is advisable to check the oil level in the engine unit. It is quite possible that its level is below the Min mark, which is why the indicator in the cabin came on. It is necessary to add working fluid and continue driving. If the light comes on due to lack of oil, then the problem is considered solved.
The light may come on immediately after replacing the oil with a new one. This is a completely normal situation. You must wait 20 seconds - the indicator should go out.
If the indicator does not go out, the cause of the malfunction lies in a poor-quality oil filter. We'll have to replace it.
How to check and replace the pressure sensor
If you notice that the VAZ 2114 oil pressure sensor is on, then first of all you should check the serviceability of the oil pressure sensor itself. In order to do this, you will need a special device based on a pressure gauge that allows you to measure oil pressure directly.
To make the measurement itself, you will need to remove the oil pressure sensor from its socket and install the device in its place. After this, you need to start the car and look at the pressure gauge readings. If everything is normal, then the arrow will show pressure in the range from 0.65 to 0.7 kgf/sq.cm.
If the measurement results are lower, then the problem should be looked for either in the oil filter (it should be checked first) or in the oil pump itself. In rare cases, the indicator light can also be caused by absolute wear of the crankshaft bearings, requiring their complete replacement.
If you don’t have a special oil pressure gauge at hand, but you need to check the serviceability of the sensor, then you can resort to the “field” test method. To do this, unscrew the DDM and start the car starter (there is no need to start the engine). If oil begins to fly out of the open hole, then the pressure in the system is completely normal and you can continue driving.
Having discovered that the reason why the oil pressure lamp is on on the VAZ 2114 lies in the pressure sensor itself, the latter should be replaced. It's very easy to do.
To do this, you only need a regular 21 open-end wrench, and the operation itself is performed as follows:
- Open the hood and remove the protective cover from the engine.
- Find the sensor (it is located on the left side of the engine, next to the timing belt) and remove the cap with the connector from it).
- Using a 21 key, unscrew the sensor from its socket.
- Screw in a new sensor instead of the broken one.
- Connect it to the electronic system by putting a cap with contacts on it.
Replacement of DDM VAZ 2114
As you can see, the whole procedure is very simple and will only take a few minutes.
Another important point worth mentioning is the frequent failure of pressure sensors, accompanied by oil leakage through them. This is caused by a malfunction of the excess pressure relief system on the oil pump, as a result of which the total pressure in the system increases greatly and oil leaks through the sensor socket. To eliminate this problem, you will have to replace the oil pump with a new one.
>Useful video
You can get more information from the video below:
