Crankshaft sensor VAZ-2114: purpose and replacement

A modern car is a collection of many different parts and systems, each of which plays its own specific role. And some of them not only perform the controlling function, but also synchronize the phases of gasoline injection and the supply of an electronic pulse to ignite the fuel-air mixture at a certain moment. It becomes obvious that a malfunction of one of these parts can significantly affect the technical condition of the entire car. And today we will pay attention to one of the smallest and most important parts in the car - the crankshaft sensor .

Symptoms of malfunctions

For sure, every motorist knows how important is the role of the crankshaft sensor in the car. In the event of a malfunction, engine start will not be possible, but it is possible to determine in advance the future failure of this part by the following features:

1. At idle the unstable operation of the engine is noticeable.
2. When driving, there are "dips" in the acceleration, the car begins to lose power.
3. Spontaneous raising and lowering of the number of revolutions of the crankshaft ("floating" turns).
4. Detonation during acceleration or driving uphill.
5. Difficult start of engine even "on hot".
   

The cause of all this can serve as a damage to the sensor winding, as well as a violation of the integrity of the wire and connections of the device as a whole.

How often does this happen?

Should the crankshaft sensor be broken at all ? VAZ-2114, like all of its successors, is supplied with fairly reliable sensors. Therefore, their failure is a rare phenomenon. Most often, the failure may be due to factory failure or mechanical damage to the part. In addition, the malfunction of the VAZ crankshaft sensor of the 2114th model is caused by pollution in the hood space itself. And if the first two factors from the driver do not depend, then here's the cleanliness of the engine compartment you need to regularly monitor. It is a large concentration of dust and dirt that can exacerbate the work of the DPC in the car.

What else can be caused by a breakdown of such a detail as the crankshaft sensor? VAZ-2114, as we said earlier, is equipped with a fairly reliable DPCV, so there should not be any talk about its natural wear and tear. Often the sensor breaks down due to unauthorized leakage of engine oil, especially at the place of installation of this element. If you notice that there are traces of liquid on the body of the oil pump, you must immediately remove them. Otherwise, sensor failure will be unavoidable. Pay attention to the fact that the elements in the engine compartment constantly undergo various temperature changes. This can be one of the most likely causes of failure of such a detail as the crankshaft sensor.

VAZ-2114: checking the quality of joints of parts

But what if there is neither dust nor oil leakage in the engine compartment? In this case, check the quality of the connections and the connections between the parts and the wires. Remember that insulation should not have any exposed strands and damages, and the contacts should always be clean and cleaned. It is possible that the failure of this element is caused by the oxidation of the wires.

The crankshaft sensor VAZ-2114: how to check the serviceability of this part?

If this device does not work or functions intermittently, do not rush to change it to a new one. First, diagnose the functionality of the old sensor. And it's not just about saving money, because even with a new detail, sometimes this problem does not go away. Agree, what is the use of replacing it, if the cause is hidden in the contaminated contacts of the connections? And to check up working capacity of an element it is possible only after its dismantle. It is not difficult to do this: first it is necessary to switch off the ignition and remove the terminal plug with the wire, then unscrew the sensor mounting screw and take this part out. It is worth noting that this element is kept on just one bolt that connects to the oil pump cover .

After we removed the crankshaft position sensor, the VAZ-2114 can be left in the garage, and the part itself can be separately diagnosed. Here we need an ohmmeter. With this tool, we will check the resistance of the sensor windings. Ideally, the ohmmeter reading should be between 550 and 570 ohms. If the data obtained differs from normal to a greater or lesser extent, it is more likely that the part is faulty. In this case, only the replacement of the crankshaft sensor will save. VAZ-2114 is very easy to maintain, so you can change the DPCV yourself, especially since the old one has already been removed.

How is the sensor installed?

First, clean the installation site of dirt and dust. How further is the new crankshaft position sensor mounted? VAZ-2114 is disconnected from the on-board network (not necessarily), and the part itself is fixed to its original place and twisted to one screw. After that, a connector with a wire is put on it. All, at this stage, the installation of the crankshaft position sensor can be considered complete. And finally a little advice: if you are going on a long trip, you will get a spare DWQV in advance. Places in the trunk, it almost does not take, and if you have it, you will always know that you will reach the destination on time and without a tow truck.

So, we found out how the crankshaft sensor is being replaced. VAZ-2114 and VAZ-2115 have almost the same design, therefore, such an algorithm for installing the DPCV can be used not only on the 14th Lada.