A car speedometer is an important part of a safe and comfortable ride. Every car owner knows what this device is intended for, but not everyone can immediately figure out the reason why the speedometer stopped working. And this is an unpleasant thing when the speed indicator shows incorrect numbers or has completely stopped functioning.
There is a high probability of overspeeding and getting. Or not at all fit into the turn. To avoid these unpleasant situations, you should know the principle of operation of the device and most probable causesleading to its breakdown.
The reasons why the speedometer VAZ 2110, 2111, 2112 stopped working
The Hall effect is at the heart of any speedometer. The controller receives data from a speed sensor, which gives a signal proportional to the speed of rotation of the tires. On cars of the "tenth" VAZ family, one of the most common reasons for the failure of the speedometer is the oxidation of contacts. Their cleaning will take about 10-15 minutes, this is the simplest and most effective elimination of the problem.
This video describes the reasons why the speedometer does not work on a car:
But, if this did not help and the speed meter still refuses to work in VAZ 2110, VAZ 2111, VAZ 2112, then the owners of these cars will have to prepare for more painstaking work. The following possible malfunctions include:
- Deformation of wires in domestic cars is also a common "snag". It is necessary to visually check all wires for defects. If nothing was found, for full confidence make a "ringing" of the wires, the inner cores can be damaged;
- Check the fuse. It can simply burn out;
- The problem may lie in the speed sensor itself. In VAZ 2110, 2111, 2112 cars, in this case, it is necessary to urgently replace the faulty mechanism. But, for starters, it is still worth checking the mechanism for operability: remove the device from the box, and connect a drill to the device. If it is serviceable, then the torque will be transmitted to the device;
- It is advisable to check the instrument panel for faults. If it was removed, then the incorrect reverse installation, could result in the arrow hitting the pad.
These are the most likely reasons for answering the question: why does the speedometer not work? This principle should be observed both for the owners of the "injector" engine and for the owners of the "carburetor". If, after completing all the procedures, the problem has not been found and resolved, then in this case it is necessary to carry out a comprehensive diagnosis of the vehicle.
We replace the speed sensor
If the reason is in the sensor, then you can replace it yourself. This can be done with a little experience with the operation of electrical appliances. Procedure:
- Be sure to wear latex glovessince de-energizing on-board system car, you can get unpleasant sensations.
- Then you need to find the sensor. As a rule, on cars of the "tenth" generation, the mechanism is located between the drive and the tip of the flexible shaft.
- Having found the device, it is necessary to disconnect the block with the wire by removing all spring clips.
- Next, using a 22 key, the mechanism is unscrewed from the drive.
- This completes the work, but only a little remains. Next, a new device is installed. This is done simply, but the main thing is to get the sensor rod into the center of the drive. Then it is necessary in the reverse order to tighten all the components, secure and proceed to checking the new mechanism.
Hello my casual reader. In this post I will tell you why the odometer and speedometer does not work and how to restore the operation of these devices.
Yesterday the speedometer and odometer failed. They stopped working at the same time. The ride is not so comfortable. Yesterday I found out why this might be so. Most of them talked about the odometer, but I'm more worried about the speedometer, since I want to know how fast I am driving.
I searched the Internet, read similar problems. I have identified 2 main reasons for myself:
1) Speed \u200b\u200bsensor.
2) The contact on the tidy flew off.
I took up this problem this morning. I found out in advance where the speed sensor is on my car. I have an automatic transmission. I found out everything, the sensor is on the upper part of the checkpoint, on the left side, in the direction of travel, next to the left CV joint.
Location of the sensor. Disconnected.
a large amount of dirt is visible inside the sensor.
I did not wonder about the dirt in this place, because this place cannot be clean.
I cleaned the area around the sensor with a screwdriver and wet wipes. Let it be clean.
The sensor itself is mounted without bolts or nuts. It seems to be clamped into a special hole in the box. To remove the sensor, you need:
- Press with a screwdriver on the sensor holder through the hole in the box.
- Turn the sensor clockwise
- Pull the sensor out of the box body.
See the photo.
How the sensor is mounted
So, I took out the sensor, now you can clean it. Of course, there was a lot of dirt in it. Everything even shone. At the same time I cleaned the sensor connector, it was also dirty.
Sensor pulled out
Speed \u200b\u200bsensor connector
Speed \u200b\u200bsensor, side view
A speedometer is an important part of a vehicle that measures and displays the instantaneous speed of movement, and also calculates the distance traveled by the car. This data is shown by a special sensor that is located on the instrument panel. If this device defective, the life of passengers and the driver himself is at risk, as to follow the rules road traffic and the set speed mode will be difficult for a motorist. That is why every driver should look after technical condition speedometer and be able to timely and independently identify the cause of the malfunction and eliminate it.
The presence of a speedometer is considered mandatory for every vehicle, since it not only helps to determine the speed of the car, but also shows the distance that the car has traveled during its entire operation. The last information is shown by the counting unit, which is included in the speedometer package, and is called the odometer. With its help, the driver can determine exactly when it is necessary to change the oil or, for example, filters. In addition, when purchasing a used car, such data are far from the latest. Also, thanks to the odometer, you can find out intermediate information about the distance traveled. With this function, a car enthusiast can calculate fuel consumption or measure the distance, for example, from home to work.
The correct determination of the speed depends on the main working elements - the flexible shaft and the drive cable. With their help, the rotational movement is transmitted directly from the transmission to the device, in other words, they permeate the entire vehicle system, connecting the instrument panel and the gearbox.
The principle of operation of the speedometer has not actually changed over a century. For such a long time, changes have occurred only in the mechanism of the indicator.
Today, there are two types of speedometers - electronic and mechanical.
The first of them are equipped with an electronic indicator, like numbers on a display, and the second - a mechanical one, in the form of an arrow. The magnetic induction speedometer is the most popular among mechanical instruments. It is equipped with two mechanisms - counting and high-speed. As for the electronic speedometer, outwardly it is no different from the mechanical version, there are only some differences in their work.
AT modern cars mechanical speedometers are practically not used. In particular, due to the fact that their error is significantly greater - 15%, when for electronic ones - only 5%. In addition, the mechanical drive and the elements of such a speedometer can wear out over time and have to be changed, which is a rather complicated and time-consuming operation, since you need to lay the cable straight, without a single bend.
The speed sensor does not work, the reasons
The most obvious sign of a speedometer failure is when there is no movement of its arrow while the vehicle is moving. In addition, the needle may twitch, but the device will still not show adequate speed. There are a number of reasons that can cause problems with the speedometer:
1.If the nut has come off, with which the speedometer shaft is attached to the flexible shaft. This is the most common and commonplace reason why a speedometer can fail. The situation can be easily corrected by simply tightening the nut and tightening the mount securely. However, if this procedure did not give the desired result, one should look further.
2. If the flexible shaft breaks during operation. This often happens during long-term operation of the car, the part can simply wear out and burst. In this case, it will be much more difficult to eliminate the malfunction, but nothing is possible. The situation is solved by replacing the torn element.
3. If the speedometer mechanism itself is broken, which is located on the dashboard. You can eliminate such a breakdown by replacing the mechanism.
4. If the shaft-cable is dry. In such a situation, it is necessary to lubricate the semi-collapsible shaft, which is the main component of the device. It is located in a special shell, which is placed in a PVC tube. It does not allow moisture and grease to enter the mechanism, which is very important for accurate and continuous operation of the flexible shaft. If the liquid is dry, the needle of the device will twitch, and the motorist will hear a typical rustling.
5. In addition, incorrect installation of the speedometer or its elements can cause such malfunctions.
6. If the arrow of the speedometer goes off scale, but does not change its position either during stopping or while the vehicle is moving, this indicates a break in the opposing spring.
The speedometer cable has dried up, how to lubricate, the course of work in stages
In order to lubricate the cable, you will need the following materials and tools:
1.Special grease.
2. Wrenches.
3. Screwdriver.
Getting started:
1.First, you need to open the hood and pull the cable out of the box - this will greatly facilitate the operations with the dashboard. The socket is located in the center of the engine compartment.
3. We take out the element and unscrew a few more screws.
4. Now we take out the dashboard directly from the niche.
5. Disconnect the device, for which it is necessary to unscrew the union nuts on both sides.
6. We take out the flexible shaft towards the drive, spread the ends of the support washer and remove it.
7. The part from the shell must be pulled out in stages.
8. Using kerosene, remove the old grease, after which the parts must be dried.
9. From the drive side, grease the element 2/3 of its length.
10 We insert it into the shell, close it with a locking washer and mount it back.
11. Tighten the pressure nuts tightly.
12. The dashboard should also be refitted.
Replacing the speedometer, the progress of work in stages
To replace the speedometer, it is necessary to unscrew and remove the dashboard in the order described above, and then the speedometer itself. Actually, self replacement speedometer is a rather laborious process, but it is quite possible to carry it out at home. In fact, to replace the speedometer, you just need to disconnect the electrical connectors from the old device and connect them to the new device. To do this, unscrew the cable nut with pliers and connect it to a new speedometer. In some cars, in particular the VAZ 2109, the speedometer cable is first unscrewed from the gearbox. This connection is located near the gearbox, under the bottom of the vehicle.
We unscrew the cable nut using the example of the VAZ 2109:
1. We tie a strong thread or soft wire to a special eye of the nut.
2. From the side of the gearbox from under the bottom, pull the cable towards ourselves so that the end of the wire remains in the vehicle interior.
3. Untie the thread from the old cable and tie it to the new one.
4. Then, you need to pull it into the salon and connect.
Sometimes, there is no eyelet on non-original cables. In this case, we use the nut directly instead. To make the locking washer easier to insert, it should be lubricated with lithol.
In any case, the failure of the speedometer is a rather serious breakdown, which should not be allowed. It is important to know that if in vehicle one mechanism is not functioning properly, this can soon lead to a malfunction of the other. Not to mention the usual rules of the road, which not everyone can follow without a speedometer. By following the above instructions, you can easily find the cause of the malfunction and eliminate it without asking for help from specialists. However, it is worth considering the fact that for each car model there are peculiarities of both dismantling and mounting of this device.
In the overwhelming majority of cases, injection VAZ-2110 are equipped with electronic speedometers. And, as a rule, they are often disturbed by malfunctions, which can manifest themselves in different ways. And if the car owner is faced with a problem when the speedometer on the VAZ 2110 does not work for him, he needs to find out the degree of complexity of the breakdown. After all, the device may not work at all or work, but partially and with visible failures.
To fix the problem, you need to identify the reasons for its occurrence.
Typical causes of speedometer breakdown
It is no secret that on the VAZ 2110 he takes part in the work of the speedometer. If you take a wiring diagram from a car, you will notice that the electronics are powered by mounting block with 10 amp fuse.
When the speedometer breaks down, the first thing to do is check all contacts... Perhaps the malfunction occurred due to the oxidation of one of the contacts.
With the normal state of contacts, it is worth thinking about possible problems in the speed sensor... Or rather, in its connectors. The fact is that they are located so that they are constantly in contact with dust, dirt and moisture. Therefore, it will not be superfluous to twitch the wires a little to shake off possible contamination. Better to try to get them and clean them more meticulously.
Sometimes checking the connectors doesn't help. Then. There is no need to be a specialist and have any special equipment in the garage. An ordinary drill or screwdriver will suffice. You will also need a partner to work..
So, we take a screwdriver, put it on counterclockwise rotation mode and clamp the sensor drive. The partner turns on the ignition and monitors the speedometer. At this moment, you need to turn on the screwdriver.
If the speedometer doesn't work, then it's time to replace the speed sensor. In case of normal operation you need to look for the problem in the drive located inside the transmission.
If we are talking about a speed sensor, then it would be reasonable to check the socket of the shaft of its drive. Often, the shaft wears out, takes a round shape, which does not allow for effective transmission of torque.
By the way, this is what is most often the culprit of the constant twitching of the speedometer needle. Therefore, if such a problem is observed, then the first step is to check the shaft and only then consider other options.
There are also a number of possible reasons for the malfunction of the speedometer on the VAZ-2110. But they can only be detected through deep diagnostics, available only at service stations.
Features of the speedometer
The speedometer on our car is located on the main dashboard... Therefore, if the reasons for the malfunctions lie precisely in the speedometer, then it is necessary to change the entire dashboard, and not its individual element. Unfortunately, while spare parts are separate for such dashboards not supplied. This just complicates the replacement of the speedometer when it breaks down.
In principle, all of the above allows you to quickly deal with the malfunction that has arisen and quickly solve it. But we must remember that if the speedometer on the VAZ-2110 does not work, then it will not be superfluous to contact the service station, where the reasons can be calculated much faster.
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 learns at what speed the car is moving.
In a situation when the speedometer installed on the VAZ-2110 injector does not work normally, a person driving puts at risk both their own health and the lives of passengers. At the same time, he can easily "earn" a fine from a traffic police officer for too much high speed... Thus, a serviceable speedometer avoids a lot of trouble.
What says about a breakdown of the speedometer
The main symptoms of a malfunction of this device are as follows:
- the arrow remains in place, despite the fact that the car is moving;
- when driving, it fluctuates or freezes;
- the device functions normally when it is cold power plant, but later the arrow stops moving.
If the above signs are found, it is necessary to deal with the breakdown as soon as possible and fix it.
Why does the speedometer break down
It should be noted that in some cases it is not difficult to repair the speedometer on your own. Others will require the help of specialists.
So, oxidation of contacts is considered a fairly easy-to-fix malfunction. It is characteristic of it "jumping" of the arrow, despite the fact that the speed of movement remains stable. The elimination of the problem occurs by cleaning the contacts.
The wires are frayed. This reason can be suspected by the chaotic movement of the arrow when starting the engine. Meanwhile, experts note that sometimes the problem does not manifest itself for a long time. It is possible to identify it with a tester.
Broken sensor. The speed control device, the performance of which is questioned, is replaced with a known good one. If the speedometer after this procedure began to function normally, then there is no point in looking for damage further. Often, sensors become unusable after their housing is destroyed, water or dirt gets inside.
Connectors. They are in the VAZ-2110 in a place where dirt constantly gets on them. As a result, the contact is broken and the speedometer needle moves chaotically. The connectors must be completely cleaned and the connection checked.
Often, the speedometer also starts to malfunction due to shaft wear. In this situation, it will be possible to get rid of the problem only after complete replacement the above part.
As you know, on this model, the manufacturer sets electronic speedometer... If it is he who has fallen into disrepair, then this problem is quite serious, since the above device is not sold by itself. For this reason, you will have to buy a whole shield. However, in nine out of ten cases, the problem is actually in a completely different place.
On a VAZ-2110 with an 8-valve engine, the speedometer receives information from the speed sensor. It, in turn, is located in the gearbox. There, through two gears, it receives data on the torque from the gearbox shaft.
Everything works the same for cars with 16-valve engines.
Most often, as noted above, the problem is that the sensor is too dirty. In general, the VAZ-2110 always accumulates dust under the hood. It, when mixed with oil, creates a fairly stable barrier. As a result, the reliability of the speedometer readings becomes unconditional. The problem is solved simply - the sensor is cleaned and dried.
It is worth recalling that it will be more convenient to access it directly through the gearbox, since it is very inconvenient to do this from below.
Another very common reason is power grid problems. It all needs to be checked. In addition, attention is also paid to:
- reliable fastening of wiring in the terminals;
- their general condition;
- fuses located within the mounting block.
In a situation where no damage to the electrical network is detected, you will have to take on the sensor itself. Its breakdown is the third most common cause of speedometer failure. Checking it is done in the following sequence:
- the sensor is removed from the gearbox;
- a drill or screwdriver is applied to the drive, switched to unscrewing mode;
- the ignition turns on;
- pressing the button of the drill, rotate the drive.
In a situation where the speedometer needle begins to move, it should be recognized that the monitoring device is fully operational. This means one thing - the fault lies somewhere in the gearbox. Here, you can only repair the damage yourself. experienced car enthusiast or a professional locksmith. When the arrow does not move from place, it will be enough to replace the sensor itself.
Conclusion
As it is easy to understand, in most cases it is really possible to repair the speedometer on your own. However, in situations where you are not sure about them, it is better to turn to experts. Wrong actions often lead to an aggravation of the problem, which, in turn, results in unnecessary expenses.
