In detail: do-it-yourself repair of a vaz 2106 tachometer from a real master for the site my.housecope.com.
The main problem that arises with tachometers on the VAZ 2106 is the case when the arrow starts to jump constantly. And in this case, to understand what the actual engine speed is at the moment is simply impossible. Also, it is not uncommon for the tachometer needle to not respond to the gas pedal at all, and stands still. If you are having similar problems, then the replacement article below will help you complete this procedure quickly and without unnecessary problems.
As for the tool that will be needed for this repair of the VAZ 2106, you can completely do with pliers and a screwdriver. The first step is to pry off the instrument panel trim from the bottom (you can first use a screwdriver), and pulling it towards you, overcoming the resistance of the latches, take it back. This is how it turns out, as shown in the photo below:
As you can see, there is now access to all indicators and gauges of the instrument panel, including the tachometer. The first thing to do is to disconnect the power plug, as well as all the bulbs that are connected:
When this has been done, you can start unscrewing the fastening "nuts". In some cases, they can be easily unscrewed by hand, and if this cannot be done, then you can use pliers:
After both "nuts" are unscrewed, carefully remove the VAZ 2106 tachometer outward from the reverse side:
If the part needs to be replaced, then we buy a new one, the price of which is about 1000 rubles and we make the connection in the reverse order. It is worth noting that when connecting the bulbs to the tachometer, you must be careful not to mix them up. If you confuse them, then you yourself understand that instead of the "charging" lamp, the handbrake can burn, etc. So take a closer look with this.
Video (click to play).
After everything is correctly connected, we tighten the fastening nuts in place and install the instrument panel in its original position. To lock it in place, you need to apply medium pressure, pressing on the pad until you hear clicks!
A tachometer is used to measure engine speed exclusively for carbureted vehicles.
This is a front panel instrument.
It cannot be called super important, but for a novice motorist who does not yet "hear" the engine of his car, it helps to calculate the number of revolutions of the engine and crankshaft.
He also plays an aesthetic role.
Quite a few car owners like to show off modern appliances on the control panel.
The VAZ 2106 has a four-stroke four-cylinder engine, and within 1 revolution of the rotor of the ignition distributor, the contacts of the breaker, the so-called distributor, open and close four times.
3 - ignition distributor:
How to connect
The tachometer TX-193 of the VAZ 2106 car works on the principle of measuring the frequency of voltage pulses that occur in the primary circuit of the ignition system. In a four-stroke, four-cylinder engine, during one revolution of the rotor of the ignition distributor, the breaker contacts open and close four times. That is, for one revolution of the rotor, four voltage pulses are formed (or two pulses for one revolution of the crankshaft). Thus, the pulse repetition rate is in direct proportion to the engine crankshaft speed, which, in fact, is reflected in the readings of the device.
In order to figure out how to connect a tachometer to a VAZ 2106, you just need to find out the purpose of the wires to be connected:
The white wire is used to connect the backlight of the device;
The red (thick) wire is connected through a fuse to the ignition switch, it receives power when the ignition is on;
White wire with black stripe - for connection to ground in any convenient place;
Brown goes to the "K +" terminal of the ignition coil, the signals from this wire control the tachometer readings;
The black wire connects to the relay for turning on the charging current indicator, which is located on the right side under the hood;
The gray wire with black stripe contacts the oil pressure switch located on the left side of the engine.
First of all, it is necessary to check in general whether the tachometer is connected to the ignition coil. The second reason: the “plus” and “minus” contacts in the battery may have been accidentally confused. Malfunctions may occur if the ignition wires are silicone. In this case, you need to change the value of the resistor value on the board. If your car is injector, the circuit from the ignition module to the fifth contact of the gearbox, and then to the tachometer, may be broken.
If the tachometer needle twitches, then we advise you to carry out the initial troubleshooting in the following sequence:
1. Check the "check" light on the instrument panel, if there is one in your car model. If it is off, then most likely the diagnostics will not show errors.
2. We check the wiring, while checking not only the voltage level on the "plus" and "minus" wires, but also the quality of the contacts. Also, be sure to check for the presence of "mass", this is often overlooked. Usually other consumers, in this case, start to work incorrectly.
3. A frequent cause of jerking of the tachometer needle is bad contacts of the distributor or failure of the capacitor, which is located on the distributor, it is very often punctured - this is the most common reason for the breakdown of the tachometer.
4. Check the ignition system. Often, faults in this circuit lead to malfunctions of the tachometer, especially to a twitching needle.
5. If the tachometer malfunctions appeared after disassembling or replacing it, then it may be necessary to adjust it. First, check its position to see if it is correctly positioned. Second, check the zero position. You can correct it with a toggle switch on the back of the panel.
6. If the needle twitches at high speeds, then this is the first sign of the "death" of the switch.
Fuse # 2 (10A) blown - Check for short circuit and replace fuse
Defective tachometer - Check tachometer
Damaged wiring - Repair wiring
Device, connection and repair of a tachometer VAZ 2106
A tachometer is used to measure engine speed exclusively for carbureted vehicles.
This is a front panel instrument.
It cannot be called super important, but for a novice motorist who does not yet "hear" the engine of his car, it helps to calculate the number of revolutions of the engine and crankshaft.
He also plays an aesthetic role.
Quite a few car owners like to show off modern appliances on the control panel.
The VAZ 2106 has a four-stroke four-cylinder engine, and within 1 revolution of the rotor of the ignition distributor, the contacts of the breaker, the so-called distributor, open and close four times.
For one revolution of the rotor, four voltage pulses occur, or 2 pulses for one revolution of the crankshaft.
Other VAZ models have different engines, so you need to take this into account when installing tachometers.
Pulse measurement is the basis of the tachometer and directly depends on the engine speed of the crankshaft.
Important: each brand of car must have its own measuring device, otherwise the readings will be deceiving.
On a plastic case with a glass holder, there is a milliammeter of the usual classical structure with an attached scale.
On it, the zones of dangerous crankshaft revolutions are indicated in different colors: the preliminary zone (5500-6000) is highlighted in yellow, and the zone of dangerous revolutions (more than 6000) is highlighted in red.
The device is evenly illuminated by an AMN 12-3 lamp.
At the bottom of the scale, there are three colored lights indicating, respectively, the amount of charge, oil pressure and the state of the parking brake.
Inside the tachometer there is a moving coil with a permanent magnet, thanks to which the pulse indicator is set in motion.
The device is electronic, therefore it is powered from the car ignition.
When buying a new pulse meter, instructions for connecting the device must be attached.
You can also find installation diagrams in reference books for motorists.
But still, if you are not an experienced mechanic and have not dealt with electronics, contact a service station: for a small fee, you will save your time.
From this, you will learn how to connect a tachometer! Happy viewing.
And for those who want to self-medicate, the connection process diagram is quite simple:
First, connect the brown wire to the "K +" terminal of the ignition coil. Pulses from the coil through this cord will control the tachometer readings;
We are looking for a thick red wire and connect it through the fuse to the ignition switch. It will receive power from the device from the rechargeable battery;
The next one is a white cable with a black stripe, which leads to the minus. It is used for ground connections.
Auxiliary serve for:
white - connection of the device backlight;
black - connection to the charging relay (located on the right side under the hood of the car);
gray with black stripe - contact with the oil pressure sensor (located on the left side of the engine).
TX-193 with a non-separable design is a complex electronic device, so it is almost impossible to carry out repairs in case of malfunctions at home.
Most likely you will have to purchase a new device.
From this, you will learn how you can modify the VAZ 2106 tachometer. Let's see!
If the tachometer does not work: you need to check if all the corresponding wires are connected correctly.
We call the cable from the ignition coil and check the contact.
It is necessary to measure the resistance of the amperage.
Then we check the “plus” and “minus” outputs of the battery and the circuit between the ignition module with the tachometer contact.
Often the replacement of "native" high-voltage wires with silicone ones can serve as a malfunction.
They have a different linear resistance and the pulse shape will change on the coil winding.
It will not be difficult for a person with certain technical skills to check the device board.
To do this, we disassemble the case:
unscrew the screws securing the case and fastening the tachometer;
disconnect the wires from the tachometer;
turn off the backlight;
unscrew and remove the remaining screws and nuts;
remove the body visor together with the glass;
carefully, using a screwdriver, remove the arrow;
unscrew the screws on the scale of the device;
take out the pins of the temperature sensor from the holes in the board;
lifting the scale, we take out the tachometer.
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It is recommended to repair the tachometer only in a car service or at a service station.
Experienced and knowledgeable craftsmen will be able to quickly identify the breakdown and fix it.
Otherwise, you risk being left without the device.
Some, let's say, "jack of all trades", manage to make a case for the meter from coffee cans, lengthen the wiring or replace cables. But such tuning is not recommended, even for the sake of convenience or "bells and whistles".
A tachometer is used to measure engine speed exclusively for carbureted vehicles. This is a front panel instrument.
It cannot be called super important, but for a novice motorist who does not yet "hear" the engine of his car, it helps to calculate the number of revolutions of the engine and crankshaft. He also plays an aesthetic role. Quite a few car owners like to show off modern appliances on the control panel.
The VAZ 2106 has a four-stroke four-cylinder engine, and within 1 revolution of the rotor of the ignition distributor, the contacts of the breaker, the so-called distributor, open and close four times.
Other VAZ models have different engines, so you need to take this into account when installing tachometers. Pulse measurement is the basis of the tachometer and directly depends on the engine speed of the crankshaft.
Important: each brand of car must have its own measuring device, otherwise the readings will be deceiving.
On a plastic case with a glass holder, there is a milliammeter of the usual classical structure with an attached scale. On it, the zones of dangerous crankshaft revolutions are indicated in different colors: the preliminary zone (5500-6000) is highlighted in yellow, and the zone of dangerous revolutions (more than 6000) is highlighted in red.
The device is evenly illuminated by an AMN 12-3 lamp. At the bottom of the scale, there are three colored lights indicating, respectively, the amount of charge, oil pressure and the state of the parking brake. Inside the tachometer there is a moving coil with a permanent magnet, thanks to which the pulse indicator is set in motion.
The device is electronic, therefore it is powered from the car ignition.
When buying a new pulse meter, instructions for connecting the device must be attached. You can also find installation diagrams in reference books for motorists. But still, if you are not an experienced mechanic and have not dealt with electronics, contact a service station: for a small fee, you will save your time.
In this video, you will learn how to connect a tachometer! Happy viewing.
And for those who want to self-medicate, the connection process diagram is quite simple:
First, connect the brown wire to the "K +" terminal of the ignition coil. Pulses from the coil through this cord will drive the tachometer readings.
We are looking for a thick red wire and connect it through the fuse to the ignition switch. It will receive power from the device from the rechargeable battery.
The next one is a white cable with a black stripe, which leads to the minus. It is used for ground connections.
These are the three main wires. Auxiliary serve for:
White - connection of the device backlight;
black - connection to the charging relay (located on the right side under the hood of the car);
gray with black stripe - contact with the oil pressure sensor (located on the left side of the engine).
TX-193 with a non-separable design is a complex electronic device, so it is almost impossible to carry out repairs in case of malfunctions at home. Most likely you will have to purchase a new device. From this video, you will learn how you can modify the VAZ 2106 tachometer. Let's see!
