Replacing the speedometer cable for a VAZ 2107 injector video

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.

Useful tips

When performing operations with this mechanism, pay attention to the following points:

When purchasing a new element, be sure to check the length of the cable. On identical car models, its size may be different. It is unacceptable to use elements shorter or longer than the standard size.
Before installing a new speedometer cable, it is recommended to apply a layer of lubricant to it. This will prevent premature failure of the mechanism. You can use regular mining or Nigrol.
When installing, try to lay it as it was from the factory. It is unacceptable for the cable to come into contact with moving parts. Also, do not use tight loops when laying. This will increase the load on the cable core, and it will quickly fail even with a good layer of oil.

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.

Is there any error

It is worth noting that the readings on the instrument panel (if it is a mechanical element) may differ slightly from the real ones. But often the error does not exceed five percent.

So, the speedometer readings are affected by the size of the rims, tire profile and gear ratio (if it is a rear-wheel drive car). Absolutely identical cars are supplied from the factory with different axles, with a different gear ratio (on average, it ranges from 3.9 to 4.4 for classic VAZs). Therefore, many manufacturers began to abandon cable speedometer technology.

Drive repair and replacement

Read

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

Using a “13” wrench, you need to unscrew the bolt on the clamp that secures the exhaust pipe to the box.
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.
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.
By moving the gearbox to the right, you can remove the device drive from its seat on the crankcase.
Next, we install a new device and carry out the reverse steps for removal.

Settings

To ensure that the speedometer readings have a minimum error, experts recommend making additional adjustments. To do this, measure the distance from the beginning of the damper to the clutch fork. The parameter should be 86 (5) millimeters.

Next, measure the gap between the end of the damper and the tip of the cable. The normal parameter is 65 millimeters with a margin of 5 mm. If your readings differ from the factory ones, you should adjust the cable tension with a wrench using a lock nut. After this, you can start operating the car.

Photo gallery “Removing and replacing the drive cable”

The procedure consists of a sequence of actions:

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

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

VAZ sensors - the main sensors on injection VAZ cars

So, dear visitors, today we will tell you about the main sensors on the VAZ. Since the operating principle of injection engines in the AvtoVAZ line is the same, in principle we have put together a manual on the sensors that are installed on injection VAZs by the manufacturer, and have prepared a brief description of the operating principles and purpose of each of the sensors below. Indeed, in essence, the very principle of operation of an injection engine is the interconnected work of the “brains” (ECU) and various kinds of sensors; there is a constant exchange of information between them and, depending on the totality of certain indicators of the sensors, the controller prepares the mixture and ensures stable and correct operation of the engine.

So let's start with the DPKV crankshaft position sensor. (pictured above)

Without this extremely important sensor and if it malfunctions, the car simply will not start. DPKV generates signals to the ECU using a special toothed disk, on which, upon careful examination, you can see what appears to be a “missing” tooth; this disk is installed directly on the crankshaft

DPKV on VAZs is located on the oil pump cover. The sensor is quite reliable and its failure is rare. But nevertheless, if it fails, you will have problems. We recommend carrying it with you in the glove compartment just in case.

Let's move on. Another important sensor is the throttle position sensor TPS.

This sensor works in conjunction with the idle air control valve to determine how open the throttle valve is. If this sensor begins to fail or fails altogether, then we will not see a stable idle and the engine speed will live its own life. Dips may also be felt, the engine will pull jerkily, in general it is not pleasant.

Now we are presented with a phase sensor, or camshaft position sensor DPRV.

It determines the position of the camshaft. Not used on 8 valve engines of early injection VAZs. Participates in the formation of phased injection, that is, the desired injector of a particular cylinder works at the right moment. If the sensor is faulty, then the system works as if it were not there, and fuel is supplied in pairs-parallel mode, which leads to excessive consumption of gasoline with all that it entails. That is, you can drive, but it is not necessary; it is better to replace the faulty sensor.

Now let's look at the DD Knock Sensor.

It is installed directly on the engine block between the third and second cylinders. There are two types - resonant and broadband. These two types of sensors are not interchangeable. It corresponds entirely to its name, monitors engine detonation and, depending on the presence and strength of detonation, helps the “brains” adjust the ignition timing (ignition timing). If the sensor fails, the engine will slow down and gas consumption will increase.

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!

Ignition system

Replacing the handbrake cable on a VAZ 2107
As was said earlier, the ignition system of a 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.