Fighting speedometer breakdowns on VAZ 2106, 2107 and 2108: how to change the drive and cable?

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.

The speedometer on the VAZ 2110 does not work, diagnostics of the fault, replacement with your own hands

1. Types of breakdowns
2. Replacement nuances
3. Replacing the speed sensor

It’s hardly worth reminding that the speedometer allows you to determine your current speed, as well as provide information about the number of kilometers traveled over a certain segment or over the entire period of operation of your VAZ 2110.

Fallen arrow

Today, most domestic “ten” cars are equipped with an electronic odometer. All sorts of malfunctions and problems happen to them, manifesting themselves in one way or another.

This is not to say that its breakdown is something very serious. But when the arrow falls down or jumps from one reading to another, although you do not change the speed, there is little pleasure in such situations. The most important thing is that you are not able to control your own speed. And this leads to unnecessary fines and more tragic consequences.

Therefore, if problems arise with the speedometer, it should be repaired or replaced.

Types of breakdowns

There are several reasons why the speedometer may stop working effectively. Let's look at them in our table.

Don't rush into buying a new replacement device. First, check the old speedometer for possible malfunctions, try methods for eliminating them.

Replacement nuances

Everyone knows the location of the speedometer - it is the main part of the dashboard, one of two large indicators, located next to the tachometer.

Dismantling the shield

Unfortunately, the peculiarity of repairing the speedometer on a 10 is such that it is almost impossible to purchase spare parts for this unit. Therefore, the only solution is to replace the entire shield.

The only advantage of replacing the speedometer shield is the ability to rewind the mileage traveled. So the cost of repairs can be partially offset by the fact that your odometer will show significantly less mileage than the actual mileage. And this can be used profitably when selling a car.

https://youtube.com/watch?v=3j9poXBMjxk

Replacing DS

After the diagnostics have been carried out, you find that the needle falls or constantly jumps from top to bottom due to a non-working speed sensor, then this problem can be solved with your own hands.

Removing the speed sensor

You will need special keys for this work. It is recommended to replace the speed sensor on the power unit:

• Disconnect the negative terminal from the battery;
• Remove the contact chips;
• Using a key, remove the problematic speed sensor;
• If the rod fails, you will have to dismantle the drive. Do this work very carefully and consistently.

If the abnormal behavior of the speedometer needle has led you to the need to change the entire speedometer assembly with the shield, we strongly do not recommend doing such work yourself. Only having extensive experience, a wealth of knowledge and skills gives you the opportunity to carry out such manipulations.

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.

Answers from experts

Maria Zheludeva:

Everyone, I see, are specialists! 1.) First, check the viability of the decree itself. speed. Press the odometer reset button (daily mileage) and holding it down, turn on the ignition, but without starting the starter. The devices should come to life. The speedometer needle will describe a semicircle and return to its place. 2.) if this happens, the speed sensor is most likely to blame. He is at the checkpoint. Or its wiring. 3.) In other cases - a regular email check. circuits and contacts of the specified items.

Sergei Rublev:

Change the cable, same thing happened. Just insert it the right way.

Ruslan Saniev:

I’ve been traveling without it for six months now, it’s even more interesting

Alexey Sorokin:

unscrew the speedometer cable from the speedometer itself and from the drive on the box, look at the connections, if you change something, either the cable or the drive

RADIO SERVICE TechSvyaz:

maybe the sensor is in the box or the dashboard is faulty

Alexey Zolotov:

a sensor or a transmission pulley for it, but it’s unlikely (if the gear on it is metal) on the Priors the bitch fucked up the plastic bastards!!!

Sherzod Shakadirov:

Replace the speed sensor in the transmission.

DRUSHA:

You remove the panel and fasten the cable to the speedometer. The most difficult thing is to push it into the hole under the dashboard. You push it into the hole and screw it to the box (I don’t know what it’s called to the piece of hardware on the box).

Antikhach:

remove the panel and unscrew one end. the second one is by the box.

Vlad Ternovsky:

and don’t forget to put the sealing rubber back on the shield

Sergey Salnikov:

autolibrary /vaz/vaz-2107/3539-vaz-2107-07i-zamena-gibkogo-vala That's how many times I ask. Why do internet search engines exist?

closet:

car-exotic m/vaz-cars/vaz-2107-car-transmission-2

Speedometer device

The indicator is designed to inform the driver about the speed at which the car is moving, as well as about 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 electric one.

The mechanical meter operates thanks to a worm gearbox and an iron cable, through which the torque of the secondary shaft is transmitted. The electric meter also uses a worm gear, only the rotations are transmitted to the speed sensor shaft. The information is displayed on the screen.

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.

Drive repair and replacement

Read

To repair or replace this device, you need to perform the following steps:

1. Using a “13” wrench, you need to unscrew the bolt on the clamp that secures the exhaust pipe to the box.
2. Then we unscrew the fastening nut of the flexible shaft, the fastening nut of the drive and the nuts with which the cross member is attached to the body.
3. The next step is to lower the rear of the gearbox so that the studs can come out of the holes in the cross members.
4. By moving the gearbox to the right, you can remove the device drive from its seat on the crankcase.
5. Next, we install a new device and carry out the reverse steps for removal.

Speedometer does not work on Chevrolet Lacetti reasons, repair

There is probably not a single modern car left whose speedometer needle is driven mechanically - by a gearbox and a cable. Today, almost all speedometers and odometers are digital. In a Chevrolet Lacetti with an automatic transmission, the speedometer and odometer receive information from the automatic transmission control unit, which in turn works in tandem with the MR140 or HV240 electronic control unit. But today we will talk about malfunctions of the Chevrolet Lacetti speedometer with a manual transmission.

Why the speedometer does not work on a Chevrolet Lacetti

The speedometer is stuck at zero.

The electronic speedometer needle and the electronic odometer on the Chevrolet Lacetti tidy are directly connected to the electronic control unit and speed sensor.

The speed sensor is a rudimentary Hall sensor that rotates thanks to a gear pair - a plastic gear and a drive gear mounted on the car's differential in the gearbox housing. It's simple - the faster the gear drive pair rotates, the more potential the speedometer receives and the further the needle deviates from zero.

Drive gear pair

In the case when the speedometer does not work at all, the needle is firmly stuck to the zero mark at any speed, there is a high probability of breakage or wear of the drive gear pair.

However, there are times when the speedometer on a Chevrolet Lacetti simply incorrectly indicates the speed; instead of 120 it may show 20 km/h or the needle may move jerkily. In all these cases, it is necessary first of all to check the functionality of the device itself, but its design is quite reliable and cases of failure are extremely rare. In most situations, the reasons for refusal are more banal.

Troubleshooting algorithm

Drive gear pair on the speedometer.

First, let's look at the mechanical causes of the malfunction. If the gear pair of the speed sensor drive fails, the needle may twitch, it may work normally on a cold box, but after warming up it may malfunction. This is a sure sign that the drive gear located on the differential housing directly behind the bearing has failed, worn out or shifted.

Speedometer drive gear.

The code of the original part is 90125064, its price is in the range of 700–800 rubles.

To replace or repair a gear, it is not necessary to remove the entire gearbox. It is quite possible to get to it from under the car, but to do this you need:

1. remove the wheel drives;
2. unscrew the transmission sump;
   Differential tray.
3. drain the oil;
4. Remove the plastic mudguard from the driver's side;
   Drive pair location.
5. Use a special key to remove the differential and replace or adjust the gear, since in some cases it simply jumps out of its seat.

At the same time, you can change the oil in the manual transmission and inspect the differential with drives. This is something that concerns mechanics, but there are several reasons for a non-working speedometer related to electrical and electronics.

Other reasons

Check the speed sensor contacts. They could have oxidized.

The most common reason in our case is oxidation of the contacts on the speed sensor.

To fix the problem, simply remove the terminal block from the sensor and clean the contacts.

The reason is a leaky connector, into which moisture gets in and the resulting corrosion of the contacts. But other wires that are connected to the sensor and the speedometer itself can also oxidize. For example, connectors C108, S202 or C202 may oxidize. To find out the state of the contacts, just test the corresponding circuit with a multimeter.

Fuse blown

Location of the fuse box under the hood.

Another common reason is the blown fuse Ef19.

Its rating is 15A, and it is located in the mounting block under the hood. The fuse is responsible for supplying power to the instrument panel.

Photo gallery “Removing and replacing the drive cable”

The procedure consists of a sequence of actions:

1. The negative terminal from the battery is disconnected.
2. First you need to disassemble the device panel, or rather remove it.
3. To disconnect the cable, you need to unscrew the fastening nut.
4. Then a wire is screwed to its eyes.
5. Then, having unscrewed the nut securing the cable to the gearbox, we disconnect them.
6. When removing the cable, you should throw the wire in the car.
7. Having untied the old cable, you need to tie a new one, lubricating it with lithol.
8. Then, using wire, we pull the new part into the car interior.
9. Installation is done in reverse order.

Upon completion of the repair work, you should check how the meter will work.

Replacing the cable in a bicycle derailleur

Since replacing a cable is a repair process, the person doing it will need a certain tool kit:

• a set of hex keys (and it must contain a 5 mm key);
• and wire cutters.

Moreover, the procedure for replacing the rear derailleur cable is almost identical to the process of changing the front derailleur. Only the latter will need to be set to easy gear before loosening the cable clamp screw

Well, the designs of these two switches are somewhat different - you also need to pay attention to this. It’s also worth remembering how the cables were routed before replacement.

Also, after the cable replacement procedure, you should definitely adjust the rear (or front) derailleur.

Actually, the replacement is carried out in stages, sequentially, step by step:

1. The rear derailleur is set to a position strictly opposite the smallest bicycle sprocket. The end of the cable must be cut and the clamping screw loosened. And first you need to remember in which part of the screw (top or bottom) the clamped end of the cable was located. Since this circumstance can have a significant impact on the correctness of gear shifting.
2. Using a five-millimeter hexagon wrench, you need to loosen the shifter fasteners and then remove it. This will give access to the protection cover.
3. The cover latch must be turned counterclockwise to remove.
4. And the removed cover provides the repairman with the opportunity to see the tip of the cable under the large spring. And you need to take a good look at how it is installed there in order to understand how best to remove it.
5. The cable must be pulled out completely, assisting the process through the tension regulator channel.
6. To help the cable head release, you need to carefully move the spring away. And in exactly the same way it will need to be removed when installing a new cable.
7. A new cable must be installed in the vacant space. And you need to stretch it tightly to the location of the old cable. For convenience, you can guide the cable with the end of a thin screwdriver or even an awl. And at the end it is better to make sure that the cable is installed exactly as it should be.
8. Now you will need to put the shifter cover in its original position. And secure it with the previously removed lock, this time turning it clockwise.
9. The shifter is installed in its place immediately before pulling the cable through the braid.
10. The cable is pushed into the braid until its end appears in the area of ​​the rear derailleur. And there is one significant nuance. If the cable “doesn’t want” to fit into the braiding, it always gets stuck and clings to something, it (the cable) will probably have to be changed.
11. At the very end, you need to make sure that the rear derailleur is directly opposite the smallest of the bicycle chainrings. Attach the cable and secure it to the screw.
12. Cut off the excess cable with wire cutters, leaving only 3 centimeters, and crimp its tip.

After the procedure for replacing the gear shift cable on a bicycle, it is necessary to thoroughly test the functionality of the shifter. And the switch too. This must be done before the bike begins to be used to its full potential. It must be tested on a special stand. And if this is not done, then the brakes may fail at the most inopportune moment.

Just keep in mind that the bench test and the conditions of the real road can vary greatly.

(87 votes, average: 4.71 out of 5)

Video “Replacing the speedometer cable”

This video shows how to change the indicator cable on a VAZ 2107 ( the author of the video is Alexey Romanov).

Welcome! Speedometer cable - it is responsible for transmitting speed from the gearbox to the instrument panel of the car's speedometer. One end of this cable is connected to the drive gearbox, which is located on the gearbox, and the other end is connected to the speedometer mechanism itself, which in turn is located on the instrument panel.

Note! To replace the cable, you will need to stock up on the following set of tools: First, be sure to stock up on basic tools, such as a screwdriver and wrenches. Next, you will need to take pliers, and also a wire approximately 2 meters long and with a diameter of 0.2-0.5 mm to make it easier to replace the cable!

Summary:

Where is the speedometer cable located? It is located near the bottom of the gearbox housing and is attached to the gearbox. For clarity, so that you have at least the slightest idea of ​​where the cable is located, look at the photo below, where the arrow indicates the cable:

When should you change the speedometer cable? It must be replaced if:

• Failure, and therefore the speedometer will not show any values ​​on the instrument panel.
• And also when it is deformed and when the nut that secures it to the gearbox or to the speedometer mechanism breaks.

Note! If you have a nut securing the cable to the gearbox, or to the speedometer, then the speedometer needle will jump sharply when driving!

Basic malfunctions of the speedometer drive mechanism

Structurally, the VAZ 2107 speedometer drive is a flexible metal cable, which is located in an armored braid. This braid serves as a fixed base, because 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. To transmit rotating torque, connecting elements are also used in the braided cable design. 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:

Replacing the speedometer cable of a VAZ 2107

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

The prerequisites for the appearance of the main types of breakdowns of the speedometer drive of the seven are as follows:

• Malfunction of the speed dial indicator. It happens occasionally, but such a breakdown cannot be ruled out.
• The flexible shaft has broken, in other words, the integrity of the iron cable is broken. To improve the situation, you need to change the cable.
• Self-unscrewing of the fastening nuts that secure the ends of the drive mechanism. This damage can be removed by tightening the fixing nuts.
• 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, therefore, in the event of such a breakdown, it will be useful to replace the cable. If the speed indicator mechanism is damaged, then the last part must be replaced, but the cable may still be in good condition.
• Flexible shaft drive malfunction. This is one of the most severe breakdowns, when the breakdown concerns not the drive, but the gearbox. If the gearbox mating socket breaks down, it will be useful to repair the device.

Also, during the use of the seven, a type of breakdown may occur, such as the appearance of extraneous noise emanating from the speed indicator. The reasons for this phenomenon are:

• The bending radius of the cable is small, so it begins to rub very hard against the braid and creak. The damage can be corrected using the alignment method. If the device is not damaged, then it needs to be reinstalled.
• When the braid is damaged. The prerequisite for damage is a violation of the integrity of the protection layer of the armored base. If the protective base is damaged, the drive must be replaced .

Only after a breakdown has been identified can a decision be made to fix it. Most often, the cause of speedometer malfunction is the cable, so let's look at the process of replacing it.

Ignition system

As mentioned earlier, the ignition system of the VAZ 2107 car and the tachometer needle are interconnected; they cannot exist without each other. And if the arrow twitches, and all the above tips did not help, you should pay attention to the condition of the ignition elements. First of all, inspect the wires for damage or lack of contacts.

It is quite possible that there is a break inside the device itself. The photo shows a wiring diagram, study it to get an idea of ​​where the wires go and where they come from. If the power system has a carburetor and a classic ignition system is installed, then it is possible that a breakdown of the capacitor installed in the lower part of the distributor has occurred.

In most cases, the needle jumps if there is a malfunction in the ignition system. It is quite possible that the Hall sensor is malfunctioning. But in this case, unstable engine operation will be felt. If you have an injector, then you should check the condition of the engine speed sensor and all connecting wires.

Very often failures occur after the tachometer has been disassembled or replaced. If you have performed such actions, then you need to carefully check whether the device is installed correctly, is the connection made in accordance with the diagram, is the arrow at zero when the engine is stopped? It is worth noting that there is a toggle switch on the back of the device; it is designed to set the needle to zero.

But there are times when at idle the needle behaves quite well. But at speed, when the speedometer passes the mark of 80 or 100 km/h, the needle begins to twitch strongly. In this case, it is even possible that misfires may occur. This is a sign that there is a breakdown in the ignition switch and it needs to be replaced urgently. That's all that can be said about the device designed to measure crankshaft rotation speed.