The reasons listed above are the most common, and their elimination allows the mechanism to return to work.If after the inspection you could not find anything, we recommend that you drive the car to a service center. Experts will be able to identify the problem and fix it. You may need to replace a regular unit, which is quite realistic to do yourself.
Before connecting the tachometer to the engine, you need to consult a specialist whether the device is suitable for your car model. Install it on or near the dashboard. The black terminal (minus) must be connected to the body. Red (plus) should be connected to the terminal of the ignition switch with a voltage of 12 V. The device input wire is connected to the terminal of the switch or the breaker of the distributor (depending on the type of ignition system). If a backlight is provided, connect its wire to the size switch.
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If your car has a diesel engine, the input wire should be connected to the W-terminal. In some generators, it is absent - then it must be removed with an insulated wire. For this, the unit is removed and disassembled. You will see that there are 3 wires going from the winding to the generator rectifier. Insulated wire can be connected to any of them. Now all that remains is to assemble the generator.
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As practice shows, the failure of the speedometer and tachometer is quite common.
On the one hand, such breakdowns do not affect the basic functions of the car, and on the other hand, the driver does not receive important information, which can lead to more serious malfunctions or even an accident.
Therefore, if your speedometer stops working or the tachometer needle starts to "live its own life", you need to urgently take any action.
In this article we will look at what and how to do it.
During operation, have you noticed that the arrow in the auto speedometer is inactive (at any speed)?
The first thing to do is to check the broach of the fastening nut of the tips of the speedometer, as well as its drive.
If, after checking, no comments were found or the work performed did not bring the desired effect, then there is a risk of damage to the speed indicator drive or breakage of the flexible shaft.
In the latter case, the part will have to be changed. At the same time, do not forget to apply high-quality lubricant to the area near the seal (Litol-24 may be suitable for these purposes).
Once the job is done, slide the shaft through the seal to help distribute the lubricant over the cable.
The appearance of a knock while driving may indicate a malfunction of the flexible shaft of the speedometer.
The reasons for this phenomenon include large bends in the cable under the dashboard, dents, and so on. Make sure the rounding radii do not exceed 10 centimeters.
Sometimes, while driving, you can notice a "growling" sound, roughly in the front of the car. The cause may be the speedometer cable, which often makes noise in the absence of proper lubrication.
This is one of the most important auto devices. Its task is to show the number of revolutions of the engine crankshaft at a certain point in time.
Failure of the tachometer is not so critical. But in the long term, it is she who can cause engine malfunction and new costs for the motorist.
So how to deal with a breakdown, and what could be the main causes of a malfunction?
In fact, there are not many of them. In the case of an electronic tachometer, the LED screen of the device most often fails. In this case, it is problematic to make repairs - it is better to replace the display.
Contacts of the tachometer Nissan Qashqai.
Failures in the operation of the tachometer are often caused by a decrease in the quality of contacts or faulty wiring (in this case, pulses from the engine to the device may not be received at all).
To eliminate such troubles, it is necessary to carefully examine all the wires for cracks and breaks.If you find a crack, just solder it, and if you find a break, replace part of the wiring.
The failure of the tachometer can be caused by the failure of the engine speed sensor.
It is not difficult to diagnose the problem - the tachometer needle starts to "jump" in different directions. There is only one way to return the tachometer to "life" - by replacing this element.
Please note that the above faults and their remedies are general in nature. Each car model may have its own nuances, and we will talk about some of them in more detail.
The speedometer on the VAZ stopped working.
In most domestic autospeedometers and odometers are mechanical. So, when a mechanical odometer fails, the main reason (almost always) is a cable break.
This problem can be easily diagnosed by the characteristic noise in the front of the dashboard.
After the breakage, the steel wires begin to touch the inner part of the shell and "ring". The main reason for the breakage is the large radius of curvature during the installation of the cable.
Mechanical speedometer malfunction can manifest itself in different ways. For example, the arrow on the device often lies "dead weight" or, conversely, shows deliberately false information.
In such a situation, you need to make sure that the speed sensor is working and that there is voltage on it. Also inspect the terminals for moisture.
If there is voltage on the sensor, then the problem must be looked for in the device itself. In such a situation, it is easiest to replace it.
It happens that a sensor malfunction is associated with some kind of mechanical damage. In this case, you can try to disassemble the drive and fix the problem on your own.
In the event that there is no voltage at the sensor, it is necessary to check all electrical connections on the way to the device - wires, blocks, terminals. It is likely that the contacts are broken or oxidized.
The new cars are equipped with electronic speedometers and odometers, which receive data from the speed sensor at the checkpoint.
Consequently, there can be two breakdowns - either in the odometer itself (in this case, it is necessary to completely change the dashboard).
Or in the sensor (we talked about it above).
VAZ tachometer malfunctions.
In a VAZ tachometer, the causes of a malfunction may differ, depending on the types of engine.
On a carburetor car, there are three wires from the tachometer.
One wire is connected to the "K" terminal of the ignition coil, and the other two are powered (respectively, "plus" and "minus").
To find out the cause of the breakdown, it is necessary to disconnect the terminals going to the tachometer and connect the latter directly to the battery (the "K" terminal remains in place).
Now you can try to start the engine. If the tachometer does not "come to life", then the problem is in the device itself or in the ignition. If the engine speed indicator is working normally, then the fault must be looked for in the wiring.
On a car with an injector, four wires are connected to the tachometer.
Of these, the first goes to the ECU, the second to the crankshaft position sensor, and the third and fourth to power.
In this case, the malfunction can only be identified by computer diagnostics. Without this work, all that is available is an inspection of the pads and an attempt to replace the crankshaft sensor.
If you change the high-voltage wires to silicone, then this can also lead to twitching of the arrow.
If the speedometer on the Priora stops working, the first thing to do is to remove the terminals from the battery for a while.
Did not help? - Then look for a fault in the device circuit. First, check the integrity of the dashboard fuse.
If it burns out, replace it (but first, make sure that all contact connections are cellu).
If the problem persists or if the fuse is OK, check all wires from the speed sensor to the dashboard. This can be done with a multimeter.
If there are no complaints about the wiring, check the motion sensor with a special scanner.If there is a malfunction, the element must be replaced.
The health of the motion sensor can be determined by the behavior of the odometer. If the speedometer does not work, and the odometer is counting kilometers, then the sensor is working properly, and the breakdown must be looked for elsewhere.
For example, problems can be in the soldering on the printed circuit board of the dashboard or, even worse, in the gearbox. But you can find out only at the service station with the help of a qualified master.
As for the tachometer on the Priora, there are three reasons for the malfunctions:
violation of the tachometer supply circuit. In this case, you need to carefully crimp all the terminals and replace the damaged wires (if any);
violation of the controller's functionality (the signal does not reach the tachometer). Only the replacement of the device will help here;
failure of the tachometer itself. This option is the most costly, because you cannot change the device separately - you need to buy a new panel.
Has the speedometer stopped working on the Daewoo Nexia? The first thing to do is check the engine index (depending on the year of manufacture, it can be of four types).
This parameter is very important, because each of them has its own characteristics of the speedometer. For example, in engines with the F16D3 and A15SMS index, information to the speed indicator comes from the sensor, and with the A15MF and G15MF index - through a conventional cable drive.
In cable-driven speedometers, the main malfunction is the breakage of the cable ends (over time, their edges are simply erased and stop working normally). To determine the problem, you need to remove the instrument panel and unscrew the nut that secures the cable.
If everything is fine with the tip, pick up the cable and try to ride a little. In the case when there is no rotation in the hand, it is necessary to climb under the hood and twist the nut that secures the cable to the gearbox.
Here, such malfunctions as a poorly tightened nut, cut teeth on the gears of the reducer, or a damaged cable end can "emerge".
For engines F16D3 and A15SMS, where there is an electronic speedometer, the main malfunction may be the speed sensor.
Popular reasons are moisture ingress or breakage of the unit itself. To check the sensor, you can try to remove it and turn the shaft with a drill or screwdriver. If the speedometer is working properly, then the reason is in the plastic gears of the reducer.
The most common malfunction of the tachometer on the Nexia is the breakdown of high-voltage wires.
Often, the malfunction with the twitching of the arrow on the device disappears after the first pulling of the wire between the distributor and the ignition coil.
It is possible to diagnose such a malfunction in the dark, when the sparks are clearly visible.
If everything is fine with the coil and wires, and the tachometer still refuses to work, look for the problem in the switch or the wires going from it to the tachometer.
In the article, we only briefly examined the reasons for the breakdown of the tachometer and speedometer of the VAZ, Nexia and Priore, as well as ways to eliminate them.
But often this knowledge is enough to feel more confident when diagnosing faults and carrying out minor repairs.
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Yeah. In the car 2005 we will find a distributor
You will even find it in the 2007 car, if she is SONYA, and if DUNYA, then you are right.
Essentially the topic: - Send the confectioners and get away from them. Yes, the conder is controlled by the ECU,
but if the ECU does not see the revolutions, then you will not start the engine either, and you are not talking about it
I had something like this on the dun (16kl. Uz), the reason is in the tachometer itself (device), more precisely in the board (bad
soldering). Disassemble the panel there with continuous crap.
‘Hor-sheff’ * ’324701 ′ * ’28 .9.2007, 2:23 ′]
Engines start the car on the move. Those. do you think the confectioners go to hell? And then they took 4000 rubles from the forehead!
The fact that the goat starts up is understandable Otherwise, how would you know that the tachometer does not work
But you still didn’t explain what kind of Ksyusha it is, 8 or 16 cells, and this is important. Signal on tahu is taken from them
in different ways: - 8kl. from the ignition coil;
-16 cl with ECU (similar to VAZ).
But in both cases, you remove the panel (it takes 2 minutes) and an LED probe with a resistor
100-500 ohms you check the signal at the connector. The pin is calculated elementarily by the panel.
As for the condenser, first of all it is necessary to check the serviceability of the pressure sensor (the pressure itself
in the system, the confectioners probably had the mind to check). The sensor is located on the right mudguard under the air duct. You unhook the connector, check with the control panel for the presence of a spring when the condender is on, if everything is ok, then insert the jumper into the connector (you can use a paper clip) and try
start the condender, if ok, then the sensor is to blame or the freon pressure is low. And so on.
Daewoo Nexia belongs to the middle class cars. He began his history in 1984. Only then it was called Opel Kadett. When the German manufacturer took the car out of production in 1991, the license for its production was bought by Daewoo Motors. The car went through a deep restyling and in 1994 appeared on the South Korean market under the name Daewoo Racer, and a little later began to be sold around the world as Daewoo Nexia. It was discontinued in South Korea in 1997, but production continued in Vietnam, Egypt, Romania and Uzbekistan. Moreover, in the last of the above countries, the production of the car continues today.
At different times, various engines were installed on the car. In total, during the production of the car, four different types of engine were provided for it - their indexes F16D3, A15SMS, A15MF, and also G15mMF.
Based on the type of motors used, various speedometers were installed on the cars. For A15MF, G15mMF engines, a mechanically driven speedometer was used, which was equipped with a special cable. On more modern engines F16D3 and A15SMS, the vehicle speed data was transmitted to the device from the speed sensor.
However, in both the first and second options, there are some design flaws that can appear during long-term operation of the car and cause a malfunction.
Depending on the type of drive, each type of Daewoo Nexia speedometer has its own malfunctions.
For a speedometer with a cable drive, the main malfunction is the destruction of the cable ends, made of plastic and having the shape of a tetrahedron. During operation, their edges are erased and cease to transmit torque to the speedometer.
In order to confirm or deny this malfunction, it is imperative to dismantle the instrument panel. After that, it is necessary to unscrew the union nut, with which the cable is attached to the speedometer, which, in turn, makes it possible to assess the condition of the cable tip. If the tip is in good condition on the side of the instrument panel, the only option for checking is to drive a certain distance - approximately 5-6 meters, while holding the speedometer cable with your hand.
If the torque is not transmitted from the gearbox to the cable, it means that the tip has failed on the other side.
In this case, it is necessary to perform the following actions - open the hood and unscrew the union nut, with the help of which the cable is attached directly to the gearbox, which serves as a conductor, with the help of which the torque generated on the secondary shaft of the gearbox is taken off. This part is located in a hard-to-reach place, since the tanks of the cooling system and the hydraulic booster are closely located nearby, which will need to be dismantled.
In this place, there may be one of the following malfunctions - the teeth of the plastic gear of the reducer were cut off, wear or destruction of the cable tip, a loose union nut that fixes the cable.
Newer Daewoo Nexia, equipped with F16D3 and A15SMS engines, are equipped with an electronic speedometer. To obtain information about the speed of the vehicle, the data that is transmitted to it comes from a special speed sensor.Its work is reduced to the transmission in real time of information about the frequency of rotation of the gearbox shaft, which is processed by the electronic control unit.
As a result of the modernization, the durability of the Daewoo Nexia speedometer has improved. However, mechanical damage was replaced by electronics problems. A typical malfunction for these models is the malfunction of the speed sensor, which occurs due to its depressurization and subsequent ingress of liquid into the interior.
The performance check of the sensor, which shows the speed, is carried out using an electric drill or screwdriver. To do this, dismantle it and rotate the shaft using the above tools. The easiest way to check the speed sensor is to use household tools - a screwdriver or, alternatively, a drill. To do this, it is dismantled from the installation site and without disconnecting the block with wires. If it rotates, the speedometer shows the speed, and the sensor is in good condition. Otherwise, it will be necessary to check the integrity of the plastic gears, which serve to transmit torque to the drive shaft used by the speed sensor.
In addition, other reasons can serve as a malfunction of the speedometer. One of the most common is the oxidation of various contacts in the wiring, which disrupts the order in which information is transmitted from the speed sensor and distorts the speedometer readings and much more.
VIDEO I wrote a little incomprehensibly, what is repeated after a while?
I wrote a little incomprehensibly, what is repeated after a while?
You understood everything correctly. I have an Auto-Askan scanner.
And when the check lights up and the tachometer stops working, how does the engine behave? And more - it stops working tachometer only , or all the devices in bulk?
OK. From the ignition coil. As far as I remember, there is a "cadet" system - the switch is located inside the trombler, and in the same place - the master inductive generator. If the tachometer does not work, there may be at least three options - switch malfunction, ignition coil malfunction, wiring malfunction. The only question now is how to filter one from the other.
What coils, what system is the machine full injector.
What coils, what system is the machine full injector.
They made fun. It's good that at least not a complete bike)))
A full injector is a full injector.
Video (click to play).
A full injector is a full injector.
