Replacing the VAZ 2107 speedometer drive gear without removing the gearbox

In order to replace the speedometer drive on a “classic”, you will need several wrenches (10, 13) and a lift or inspection ditch.

The sequence of operations for replacing the drive is given below. Each number in the image corresponds to a step in the list. The work is performed sequentially and takes about 20 minutes.

Replacing the speedometer drive on a VAZ 2101-2107 car

1. Using a 13mm wrench, unscrew the bolt of the clamp securing the exhaust pipe of the muffler to the gearbox.
2. Unscrew the nut securing the flexible shaft of the speedometer drive.
3. Using a 10mm wrench, unscrew the drive fastening nut.
4. Using a 13mm wrench, unscrew the two nuts securing the cross member to the body. Then we lower the rear of the transmission down so that the studs come out of the crossmember holes.
5. We shift the gearbox to the right and remove the speedometer drive from the hole in the crankcase.

We install the new drive in the reverse order of removal.

To replace the flexible shaft (cable), disconnect the upper fastening of the drive cable from the speedometer and remove it from the hole in the front body panel.

Replacing the speedometer drive

In all this time, I only once had to change the speedometer drive of a VAZ 2107. I don’t know for what reason, but a piece broke off on the speedometer drive drive gear (part number 21060-1702158-00 / 21060170215800). And this led to wear on the speedometer drive gear.

But at first I just thought that the drive was faulty, I counted the teeth (luckily only the middle was ground down), there were 13 of them, as in principle on all cars of this model with a five-speed gearbox, I bought a new one and installed it.

Imagine the surprise when, after a couple of kilometers, the speedometer failed again. Having removed the drive again and contrived, he looked into the hole in the box, while turning the shaft. It turned out that there was a problem.

I’ll write about how to change the speedometer drive drive gear in another article, but for now about replacing the drive.

Pinout DS 2109, 2110, 2112, 2114, 2115

If you understand how to connect the speed sensor, then there is the following pinout that you should follow. At the same time, it is important to understand the essence of the operation of the DS to study the circuit diagram of the sensor, which is attached to this article.

The factory speed sensor of VAZ cars is manufactured with some differences in connections to the block connector. The square-shaped connector is used in Bosh electronics systems. The circle-shaped connector is used in electronic systems such as January 4 and GM.

Types of drives

When purchasing a drive, you still need to be careful. It is advisable to first remove the drive and count the teeth, since their number varies. There are several types of them: 9, 12 and 13 teeth. The installation of one or another drive depends on the installed rear axle, since they have different gear ratios. The 13 teeth are color coded blue.

If you are one hundred percent sure that the drive is faulty, then buy it. But I still recommend that you first figure out the reason why the speedometer is not working and only then make a purchase.

Mechanical drive VAZ 2114 - checking functionality

Another common reason is the malfunction of the mechanical drive, and in particular, the one that is installed when the car is assembled at the car factory has an unreliable plastic rod on which the drive gear is located. There are cases of breakage of this rod and cutting of teeth on the gear. When replacing them, pay attention to the color of the gears, since the VAZ-2114 is equipped with engines with different displacements and due to different gear ratios of the main pair, the gear ratios of the speedometer drive change. Therefore, the color of these gears must be the same. If the speedometer drive fails, replace it with one that has a metal rod.

Replacing the seven speedometer drive

For repairs, you need to drive onto an overpass or a pit, there is no way to do without it. You will also need keys for 13 and 10 and of course the drive itself (part number 2106-1702150-01).

1. in order to remove the part from the box, you need to lower it a little by unscrewing the nut 13 securing the box;
2. use a 10mm wrench to unscrew the drive;
3. Pull it out a little and turn it to disconnect the connector and unscrew the speed sensor.
4. We pull out the part to the end.

Unscrew the box fastening

Unscrew the speedometer cable

Unscrew the speed sensor

Assembly is carried out in reverse order.

Reinstalling the speedometer drive

Note

Now there are still enough fakes on the market, and in order not to buy a low-quality part, check it at least a little. To do this, grab the gear on one side and the output on the other and try to turn it. If the engagement slips, it is better to refrain from such a purchase.

Source

How does the speed sensor affect engine performance?

A special controller has been introduced into the speed detection system, which receives a pulse signal from the sensor. It is the controller that transmits the signal to the electronic control unit, which calculates the amount of fuel required for optimal engine operation. For example, if the speed of the car decreases, the amount of fuel supplied to the engine also decreases. Due to this, it is possible to significantly save fuel and operate the engine in the most gentle mode.

If the speed sensor malfunctions, the control unit will not receive a signal corresponding to the actual speed of the vehicle. Fuel will be supplied evenly no matter how hard the driver presses the gas pedal. In practice, it turns out that fuel is consumed in excess, and the power unit sometimes operates jerkily . Statistics show that a working sensor allows you to save about 2 liters of fuel per 100 kilometers. Another feature of modern cars with speed sensors based on the Hall effect: malfunction of the electric power steering with a faulty sensor (error P-0501).

About the speedometer drive on the VAZ 2107 and its replacement

In order for the driver to be able to control the speed of the vehicle, a speedometer or speed indicator is provided in the design of the instrument panel. Few people think about how it works until it malfunctions. The drive mechanism is responsible for its operation, for which the VAZ 2107 uses a cable. This speedometer cable on the VAZ 2107 is far from eternal, so if a malfunction occurs, it will need to be replaced.

Where is the Charging Relay for VAZ 2107 Injector

where is the relay exercise on the VAZ-2107

As a rule, engine starting problems are observed in winter if the VAZ-2107 is left outdoors overnight. This can happen for a variety of reasons, however, when the battery light flashes on the device panel, you should first suspect a problem with the charge relay . In most cases, such drivers encounter drivers who often poorly maintain their vehicle.

How to change the charging relay on a VAZ-2107, also where it is

? This article is responsible for this decision.

How does a baton work?

This device is on a VAZ-2107

) is located in the same housing as the brush mechanism.

Its main purpose. stabilize the voltage at the generator output. More recently, relays designed as electrical circuit boards have been sold in stores. There was one drawback. relatively short life expectancy. Such devices cannot be disassembled and simply replaced with serviceable ones if they break down.

Basic malfunctions of the speedometer drive mechanism

Structurally, the VAZ 2107 speedometer drive is a flexible steel cable, which is in an armored braid. This braid serves as a fixed base, since the main task of the cable is rotation. When it rotates inside the braid, torque is transmitted, which is removed from the gearbox and transmitted to the speedometer sensor. The braided cable design also uses connecting elements to transmit torque. One of these devices connects the drive to the gearbox gearbox, and the second to the speed indicator mechanism.

Knowing the structure of the drive mechanism, it is necessary to analyze its malfunctions. These malfunctions can be divided into two types:

• The main ones are when the speedometer completely stops functioning and displaying information about the current speed of the car.
• Secondary - when the speed indicator works, but at the same time makes extraneous noise.

The causes of the main types of breakdowns of the speedometer drive of the seven are as follows:

1. Malfunction of the speed dial indicator. It happens rarely, but such a breakdown is not excluded.
2. The flexible shaft has broken, which means the integrity of the steel cable is being compromised. To correct the situation, you need to change the cable.
3. Self-unscrewing of the fastening nuts that secure the ends of the drive mechanism. This damage can be eliminated by tightening the fixing nuts.
4. If the tips of the flexible drive are damaged - the driven and drive gears. When the speedometer on a VAZ-2107 does not work, the reasons for the breakdown may be hidden in a violation of the integrity of the tips, so in case of such a breakdown, you will need to replace the cable. If the speed indicator mechanism is damaged, the last part must be replaced, but the cable may still be in good condition.

5. Flexible shaft drive malfunction. This is one of the most difficult breakdowns, when the breakdown concerns not the drive, but the gearbox. If the gearbox mating socket breaks down, the device will need to be repaired.

Speedometer device

The indicator is designed to inform the driver about the speed at which the car is moving, as well as the daily and total mileage. All information is reflected on the dial located on the dashboard.

On vehicles with a carburetor engine, a mechanical speed meter is installed, on engines with an injector - an electronic one.

The mechanical meter operates thanks to a worm gear and a metal cable through which the torque of the secondary shaft is transmitted. The electronic counter also uses a worm gear, only the rotations are transmitted to the speed sensor shaft. The information is displayed on the display.

Speedometer gearbox VAZ 2107

In order to replace the speedometer drive on a “classic”, you will need several wrenches (10, 13) and a lift or inspection ditch.

The sequence of operations for replacing the drive is given below. Each number in the image corresponds to a step in the list. The work is performed sequentially and takes about 20 minutes.

1. Using a 13mm wrench, unscrew the bolt of the clamp securing the exhaust pipe of the muffler to the gearbox.
2. Unscrew the nut securing the flexible shaft of the speedometer drive.
3. Using a 10mm wrench, unscrew the drive fastening nut.
4. Using a 13mm wrench, unscrew the two nuts securing the cross member to the body. Then we lower the rear of the transmission down so that the studs come out of the crossmember holes.
5. We shift the gearbox to the right and remove the speedometer drive from the hole in the crankcase.

We install the new drive in the reverse order of removal.

To replace the flexible shaft (cable), disconnect the upper fastening of the drive cable from the speedometer and remove it from the hole in the front body panel.

Replacement

The process of replacing a diesel engine is very simple, and even the most uninitiated car owner can cope with it.

• key to 21;
• key to 10;
• crosshead screwdriver.

Execution procedure for VAZ 2110 with drive sensors.

1.Raise the hood, disconnect the “-” terminal on the battery.

2. Determine the location of the sensor. For both old and new models, it is located on the back of the engine at the top of the gearbox.

3.If necessary, use a screwdriver to loosen the corrugation clamp, remove it, and move it aside.

4.Squeezing the antennae on the sensor connector, disconnect

5.Use your hands or using a 21 wrench to unscrew the sensor.

6.Using a 10mm wrench, unscrew the nut securing the DS drive and carefully remove it.

7.If the drive is in order, you can leave the old one, but if it has traces of mechanical stress, we replace it.

8. Having installed the drive, install a new sensor by screwing it clockwise.

9.Connect the connector, connect the corrugation, and the negative terminal.

Changing the electronic sensor

1.De-energize the vehicle's on-board circuit.

2. Using a screwdriver, loosen the corrugation clamp and remove it.

3. Disconnect the wires from the DC by moving the latch.

What is the difference between the speedometer drive of the VAZ 2101, 2103, 2106?

Depending on the gear ratio of the rear axle gearbox, speedometer drives can be of three types. They differ in the number of driven gear teeth (12, 9, 13).

One of the rarest, almost “extinct” on the auto parts market is the 2101 drive without a mark with 12 teeth. It is suitable for Zhiguli gearboxes with a rear axle 2101, which has a gear ratio of 4.3. The VAZ 2102 station wagon (gearbox - 4.44) is also installed on older models, but has a larger reading error (“overestimates”).

Drive 2103 (9 teeth) is marked with red paint - for a gearbox with a rear axle 2103 with a gear ratio of 4.1.

The most popular option nowadays is the VAZ 2106 drive with 13 teeth, which has a blue mark on the body. Suitable for classic VAZ car models with axle 2106 (main gear ratio - 3.9).

How much does a new drive cost?

In auto stores in Moscow and the region, the average price for a speedometer drive is about 300 rubles.

A speedometer malfunction is a non-critical, but quite unpleasant problem. Data on mileage and, most importantly, current speed should not be neglected. The cause of the problem lies in a breakdown of the speedometer or its drive. To repair a VAZ 2107 speedometer, it is enough to have minimal repair skills.

How to check the speed sensor

Speed ​​sensor connector pin numbers

You can check the sensor without removing it from the car. To do this, connect the device as indicated in point “4” and rotate the shaft using the rear wheel. 1. Select a plastic tube of suitable diameter to fit tightly on the sensor axis. 2. Turn on the multimeter in DC voltage measurement mode; the measurement limit is 20 volts. 3. Connect the sensor to the car’s standard connector. 4. Connect the “positive” probe of the multimeter to contact “3” of the sensor, and the “negative” probe to ground. 5. Rotate the roller with a tube and look at the device. If the readings vary from approximately 0 to 5 volts, the sensor is working. You'll have to look for the problem elsewhere.

If there are no signals (changes in readings), we replace the sensor with a new one, suitable for the VAZ-2107. To check without a multimeter, you need to hook up the “control” (or any homemade 12-volt light bulb) with one wire to contact “3” of the sensor, and the other to “ground” and rotate the roller. If the speed sensor is working properly, the light will start flashing.

Basic speedometer faults

Malfunctions can be divided into two types:

• the speedometer does not show the current speed;
• The speedometer drive is noisy.

The VAZ 2107 speedometer may not work for the following reasons:

1. The speedometer is faulty. In this case, the device must be replaced.
2. The nuts securing the ends of the flexible shaft have come loose. To fix the problem, they need to be screwed on.
3. The flexible shaft is broken. It must be replaced to restore the speedometer's functionality.
4. The tip of the flexible shaft or the mating socket on the speedometer is damaged. In this case, you should change the VAZ 2107 speedometer cable or the speedometer itself
5. The flexible shaft drive is faulty or the speedometer drive socket in the gearbox is damaged. This is a rare breakdown, the elimination of which involves repairing the gearbox and is worthy of description in a separate article.

Causes of device malfunction

Signs of a device malfunction include incorrect readings and noise during operation.

The reasons may be the following:

• the counter is faulty;
• the fastening nuts are loose;
• break of a flexible cable;
• the tip or the socket into which it is inserted is damaged;
• the drive is broken or the socket through which it connects to the gearbox is damaged;
• The cable sheath is damaged.

Checking the mechanism for functionality

To diagnose the cause of the meter malfunction, you need to lift the car using a jack and remove the meter cable. At the next stage you will need an assistant. One person rotates the raised wheel while a second person watches the flexible shaft. If the cable rotates, then the reason is in the counter; if rotation does not occur, the cable will have to be changed.

The electronic device is checked by testing the instrument panel. Press reset and turn off the ignition. When the ignition is turned on again, the arrows on the speedometer should move three times. If they remain motionless, this indicates a malfunction of the meter.

Installing a VAZ 2107 speedometer cable

Before installing a new cable, it must be pulled out of the casing, lubricated with Litol grease and inserted into place.

Next, you need to tie the guide wire to the nut securing the cable to the speedometer and pull it from the bottom of the car into the interior.

Further actions are performed in the reverse order of removing the speedometer cable.

After installing the cable, you must insert the rubber protective cover located on the braid. into a hole in the car body. through which the cable passes into the cabin.

This completes the repair of the VAZ 2107 speedometer

The reason for the malfunction of the device often lies in the fact that the VAZ-2107 speedometer drive has failed.

What to do if the speedometer does not work on a VAZ-2110 with an injector

As you know, devices installed in a car allow you to monitor the situation while driving on the streets and monitor the operation of the engine and all other systems. Among others, the speedometer occupies a special place. It is located on the dashboard directly above the steering wheel. With its help, the driver finds out at what speed the car is moving.

In a situation when the speedometer and the injector installed on the VAZ-2110 do not work properly, the person behind the wheel puts both his own health and the lives of passengers at risk. At the same time, he can easily “earn” a fine from a traffic police officer for speeding too high. Thus, a working speedometer allows you to avoid a considerable amount of trouble.

Source

The drive can make noise for the following reasons:

• the cable has a small bending radius. Here it is necessary to re-route the drive;
• The cable sheath is damaged. In such a situation, it is necessary to replace the speedometer drive assembly.

As practice shows, the largest number of breakdowns of the VAZ-2107 speedometer are associated with its drive and can be eliminated by replacing the flexible cable. To do this you will need pliers and a screwdriver. To facilitate installation, you can use steel wire with a length of about 2 m and a cross-section of 0.5 mm. The drive is fixed in the lower part of the crankcase to the gearbox, so repairs require a lift or inspection hole.

We find out how to change the throttle cable on a VAZ 2114

Some car owners are wondering how to change the throttle cable on a VAZ 2114. The reason for this is the great importance of this element for the entire car. Without a cable, no mechanical unit can function in normal mode, because it is this that allows the power unit to operate in the mode desired by the driver. We are talking about increasing or decreasing speed at a certain point in time.

If the driver cannot regulate the engine speed while driving, this can lead to an accident. Also, if problems arise with the cable on the mechanical damper, the machine will also not be able to operate normally. In particular, the car will idle, and pressing the gas pedal will not lead to any effect. It is for this reason that not a single throttle valve has ever been done without a cable.

Replacing the throttle cable In order to replace a faulty or damaged throttle cable 2114, you need to have a whole set of tools on hand.

Among the most important tools are:

1. Spanners.
2. Screwdrivers.
3. High quality pliers.

How to replace the throttle cable on a VAZ 2114

In order to begin the process of replacing the cable, you first need to find it. If a car enthusiast does not know how to remove the throttle cable on a VAZ 2114, then he should act exactly according to the instructions below.

Usually the cable is located between the throttle sector and the gas pedal. Finding the sector will not be difficult, because if you look closely, you will notice that the tip of the cable is attached to it. The cable runs in the area of ​​the car's engine compartment and front shield.

The process of replacing the throttle cable

Additional Information. The front shield refers to the metal shield that separates the car's body and engine. It can be difficult to locate the cable, so in order to find it, you should be as careful as possible during your search.

Dismantling the VAZ-2107 speedometer drive

The actions are performed in the following sequence:

• the car is installed on an inspection hole;
• the ground wire is disconnected from the battery;
• the instrument panel is removed;
• the nut securing the drive to the speedometer is unscrewed and it is disconnected;
• a wire is tied to the eye of the nut;
• the nut securing the flexible shaft to the gearbox is unscrewed;
• the speedometer cable is disconnected from the gearbox;
• the drive is pulled out so that the guide wire remains in it;
• the wire comes untied from the nut.

Wiring fault

As noted above, the wires oxidize over time, become bent and simply dry out. Ultimately, this leads to the complete loss of contact, which previously appeared and disappeared, which led to the incorrect operation of the speedometer.

This problem can be solved in several ways. The simplest is to re-solder the wires and heat-shrink them. The problem may arise somewhere else, but it may not happen. The second method is to replace the entire braid. A more labor-intensive and complex method, but the result is normal wiring operation for a long time. You also need to understand that if the wire is exposed, it can short to ground. There is nothing good about this either, so if you notice this, then you should try to fix the problem as soon as possible.

Possible malfunctions and ways to eliminate them

A jumping meter needle indicates a problem with the car. Repair depends on the cause of the problem.

You can list a number of reasons for device malfunction and ways to eliminate them:

1. If there are poor contacts or damaged wiring, the source of signals from the motor to the device is lost. To detect a wiring fault, you need to check the electrical wires. If damage or breaks are found, the wires must be replaced. Poor contacts are often the result of oxidative processes. To restore functionality, the contacts need to be cleaned.
2. Malnutrition. You should check the voltage on the positive and negative wires, as well as ground.
3. If the tachometer needle floats or does not drop to zero, the reason may be a faulty sensor. In this case, it must be replaced.
4. In the case of a digital device, it may not work if the LED screen is faulty. Such damage is possible with prolonged use. The display cannot be repaired; it can only be replaced with a working device.
5. If the tachometer needle jumps at idle, there may be problems with the distributor. It is necessary to check the status of its contacts. In addition, the cause may be the distributor capacitor located on the cover. It is often punctured during operation.
6. If the tachometer needle jumps, then the reason may be a violation of the integrity of the ignition system circuit. It needs to be checked and the fault corrected.
7. The needle may move erratically after replacing the device. In this case, you need to configure it: adjust the position of the device itself, bring the pointer to zero, check the correct installation and connection. Adjustment is carried out using a toggle switch located on the rear panel of the device.
8. If the needle jumps at high speeds, then the reason is the failure of the switch, which needs to be replaced. Problems with the engine are also possible, but these problems can only be detected by a specialist using special equipment.
9. The cause of the malfunction may be the replacement of high-voltage wires of the ignition system, their wear or damage.
10. The pointer may drop to the lower limit or twitch as the shape of the pulse on the coil changes. The reason is that the cross-section of standard cables has a different resistance. To resolve this problem, you need to reduce the value of the external resistor located on the tachometer microboard.