Switch VAZ 2108: recommendations and installation conditions

Ignition is the key element necessary for the operation of any gasoline engine. The ignition system delivers a spark in time to the cylinder, where the piston has already compressed the fuel mixture and ignites it. As a consequence, the gases expand, press on the piston. Further movement is transferred to the connecting rod, which, in turn, rotates the crankshaft.

Ignition of the VAZ 2108

The adjustment of the ignition on the "eight" depends on the preferred fuel and engine (2108, 21081 or 21083). Ignition for each motor is accordingly set with a certain advance angle.

To configure the ignition, you need:

• Tachometer.
• Stroboscope.
• The key is 10.

But, as practice shows, a faulty or untimely supply of a spark can be caused not only by an inaccurate setting of the ignition. The reason are non-working candles, insufficient compression , a broken ignition coil, a faulty switch.

Switch VAZ 2108 - an element of the ignition system, which is responsible for feeding control pulses to the coil and optimizing the efficiency of the spark. The quality of the impulse is determined in special conditions. After the installation of the VAZ engineers in the ignition system of the two-channel switch, the engine performance changed for the better:

• There was a more powerful spark.
• Idling has become more stable.
• It became more effective to start the engine in cold weather.
• The fuel consumption has decreased.
• The power losses of the spark in the trampler were lost.

Malfunctions in ignition

Identify and fix all problems is quite simple. Check the candle can be painfully easy, if there is no necessary device. Do it this way: on the engine, the engine is taken in turn to remove the bar-wire from each cylinder. If the armored ship is removed, and the engine does not affect the operation of the engine - it becomes clear that the reason lies precisely in this candle.

Checking the coil is a bit more complicated. It will be necessary to borrow the same spare part, but 100% working. If after the replacement of the coil the problem has disappeared, then it was she who was faulty.

Check for the presence or absence of a pulse using a warning lamp. Often it happens that malfunctions in the ignition system occur during the trip. And not always at hand, the car owner will have a spare switch to VAZ 2108, an ignition coil, a set of candles and so on. In this situation, you can ask for assistance from the travelers or contact the services of the evacuator. The cost of the last service will certainly not please the driver.

To get out of this situation and go on your own further, you need to first find out the cause of the malfunction. The switch is tested in various ways. But for many methods it is necessary to use special instruments and equipment.

Troubleshooting methods

In road conditions, you can check the switch. Disconnect the wire from pin 1 and connect the bulb (12 volts) to the break. When you crank the crankshaft, the light bulb should periodically light up. This means that the switch VAZ 2108 is working.

You can check it differently: disconnect the wire from the tracer and insert a regular clip into the central contact. The last one is connected for a short time (1 second) to the body of the trambler. High-voltage armored wire from the ignition coil put on the master brake cylinder with a contact gap of 1 centimeter.

After these simple operations with the ignition on, a spark must appear. If the latter appeared - the switch is working.

For car enthusiasts who do not understand electronics at all, it's easier to replace a faulty part. It is not at all difficult to take a known good element and include it in the system. The method of deduction can be used to find a malfunction. As practice shows, the coil is the least likely to fail, after it the trampler, then the candles and the switch.

Wiring diagram of the switch VAZ 2108

The VAZ 2108 switch has 7 numbered contacts. Each of them performs a specific function and is connected to a separate element. Namely:

1. On the ignition coil.
2. To the electronic switchboard (to the case).
3. To the ignition switch contact .
4. On the battery.
5. At the Hall sensor.
6. On the ignition distributor.
7. Used for control signal in electronic tachometers and control devices.

In general, the connection of the switch VAZ 2108 is a simple process even for an inexperienced car owner. Problems during the standard replacement or installation of this part should not arise. In extreme cases, anyone can use the help of a specialist or literature on the repair and operation of a VAZ car of the desired model. The scheme of connection of the switch VAZ 2108 has no special difficulties.

The main thing

Whatever one may say, VAZ is a car created without any modern and innovative technologies. Repair of such a car in 80% of cases is made by the owner.

No exception - repair of the ignition system of this car. Switch VAZ 2108 - the most vulnerable part in this system. Skilled craftsmen know that for the "eight" the switch comes from some models of Audi, Volkswagen and other brands of cars.

The spare part from a foreign manufacturer shows a higher resource without losses in the supply of momentum and the production of a spark.