Device, purpose and self-replacement of the ignition coil VAZ 2106
Content
The VAZ 2106 ignition coil is a mechanism that regulates the supply of electricity to the distributor and other elements of the ignition system. A bad coil will prevent the engine from starting. Therefore, the owner of the VAZ 2106 must know the procedure for checking its performance and replacing it.
Ignition coil VAZ 2106
The VAZ 2106 ignition system includes:
- ignition coil;
- distributor;
- spark plug;
- low voltage wires;
- high voltage wires;
- egnition lock;
- ignition relay.
appointment
The ignition coil is a high voltage impulse transformer. Its main function is to create a high voltage in the circuit for the formation of a spark. A spark, in turn, is necessary to ignite the fuel-air mixture during the operation of an internal combustion engine. If the coil is faulty, the car simply won't start.
Location
On the VAZ 2106, the ignition coil is installed in the left front corner of the engine compartment. It is fixed on the mudguard with two nuts and can be easily dismantled if necessary.
Device and connection diagram
The central part of the coil is the core, on which about 30 thousand turns of a thin wire of the secondary winding are wound. A layer of thick wire is wound on the secondary winding - the primary winding. One end of both windings is connected to the battery, the other - to the distributor that controls the power supply. During the winding process, thin and thick wire will have points of contact. One of these points must be connected to the voltage switch. In this case, the function of the core of the coil is reduced to strengthening the magnetic field.
Choosing an ignition coil for the VAZ 2106
The design of classic VAZ cars does not put forward excessive requirements for the ignition coil. The coil must meet certain parameters and produce the required voltage. Coils from the following manufacturers can be installed on the VAZ 2106:
- ERA is a domestic manufacturer of components for various cars, offering ignition coils for the VAZ 2106 at a price of 1350 rubles. These coils have a very limited lifespan.
- MZATE-2 offers reliable ignition coils at prices from 600 rubles. In addition to the low price, the products are easy to install and are available in almost every car shop.
- Bosch is a proven manufacturer of auto parts. Despite the high price (from 2700 rubles), German-made coils are extremely reliable and have the longest service life.
- SOATE is another domestic manufacturer that sells ignition coils for the VAZ 2106 at a price of 700 rubles.
Usually, when buying a VAZ 2106, owners are looking for powerful coils at a low price, since the power characteristics of the engine directly depend on the number of turns of the winding. Experienced car owners give such advice:
Look in the store for a contactless ignition kit, specifically for your engine. You can install it yourself - everything is simple there, there are a lot of manuals on the Internet. At the same time, change the spark plugs and wires. Then do not forget to go to a normal carburetor. I put it on a working 4ku with a triple engine myself, it began to go better - without failures, and it also starts up in cold weather. So they will tell you this on any specialized forum - look in Yandex for a VAZ 2106 club or forum. It is also advised to take thinner oil for winter - for example, something like 5w30, there are not so many semi-synthetics. Search to help you. By the way, you always need to pull out the suction on a cold one - less in the summer, of course.
The most reliable are Bosch coils - these are powerful high-quality devices with a maximum service life.
Signs and causes of a failed ignition coil
Many people believe that heating the coil during operation is a malfunction. However, it is not. A high voltage current passes through the winding, so a slight heating of the coil is possible.
Symptoms of a malfunction
The main symptoms of a bad coil are as follows.
- No spark. This is the most common symptom in which it is impossible to start the engine. The coil in this case must be replaced.
- When starting, the engine starts to work and immediately stalls. The reason for this is also a faulty coil.
- The engine runs stably, does not overheat, but fuel consumption increases.
There are also a number of indirect signs of a coil malfunction, which until a certain time do not affect the engine's performance, but will appear in the near future:
- Mechanical damage to the coil body, which can be seen with the naked eye.
- Breaks in the coil windings.
- Coil overheating.
In addition, the driver should be alerted by the uneven distribution of carbon deposits on the candles, as well as the inability to start the engine the first time. If there is even the slightest doubt about the performance of the ignition coil, it is better to check it immediately, preventing the possibility of its failure on the road.
Causes of malfunction
Experts identify two reasons why the ignition coil can fail.
- Use of low quality spark plugs. Cheap candles produce reverse gases, which, in turn, can cause breakdowns in insulators. As a result, the coil tips will quickly fail, and you will have to change the coil along with the candles.
- Strong overheating of the coil body. The coil itself must work in any temperature conditions. However, with frequent overheating of the engine, the coil will also experience thermal overload. This usually happens with aggressive driving or problems with the engine cooling system.
By eliminating the possibility of these causes, you can significantly increase the life of the coil.
Diagnostics of the ignition coil
If you suspect a coil malfunction, first of all, you should check whether voltage is applied to it. This will require:
- multimeter;
- pliers with insulation;
- rubber gloves.
The check itself is performed as follows:
- The voltage supply to the coil is switched on.
- A multimeter is connected to terminal B+ and ground. It should show 12 V.
- If there is no voltage to the coil, then the ignition switch is faulty.
- If voltage is applied, the resistance of the primary and secondary windings is measured. To do this, the contacts of the multimeter are first connected to the terminals of one winding, and then to the terminals of the other. For the primary winding, a resistance of 3-4 ohms is considered normal, for the secondary - no more than 7-9 ohms.
Under no circumstances should the ignition coil be checked for spark. If you lean the wire against the motor housing, then the gap between the windings will increase, which will lead to a breakdown between them.
Replacing the ignition coil VAZ 2106
The ignition coil VAZ 2106 is a non-separable device. It cannot be disassembled and repaired. In case of failure, the coil is replaced as an assembly. This will require:
- a wrench on 8;
- wrench for 10.
Coil replacement procedure
When replacing the coil, safety precautions must be observed. Since the coil is a high voltage transformer, before dismantling it, the car must be de-energized by removing the wires from the battery. Further work is carried out according to the following scheme:
- Remove the high voltage wire from the coil body.
- Unscrew the nut from the "OE" terminal of the coil. Then remove the spring washer and wire end.
- Unscrew the nut from the "B +" terminal, remove the washer and the tip.
- Unscrew the two nuts securing the coil to the mudguard.
- Remove the failed coil and install a new one in this place.
- Tighten the coil nuts.
- Screw the nut with the wire to the "B +" terminal, after substituting a new spring washer under the wire end.
- Screw the nut to the "OE" terminal, replacing the spring washer.
- Connect the high voltage wire to the coil body.
Thus, replacing the coil will take 10-15 minutes. Any motorist can easily cope with the work.
Video: replacing the ignition coil VAZ 2106
Thus, even an inexperienced motorist can check the performance and replace the ignition coil of the VAZ 2106. Particular attention should be paid to the observance of safety measures when working with high voltage.
