Where is the engine temperature sensor?
Car problems - this is the question that today is becoming more common. The point here is that there are more cars, respectively, and more drivers, and their problems do not increase, but simply start, figuratively speaking, to hit the squares. There is nothing particularly sad about technical problems, especially if you are able to self-tighten a few nuts. If the experience is more, for example, five to ten years of regular self-maintenance, then there’s nothing to talk about. But for novice motorists, even the most obvious things become serious problems that need to be somehow solved. One of these is monitoring the temperature of the coolant in the engine.
Why do I need a temperature sensor engine?
In fact, the device is very simple, and with it there should be no problems at all.But he can point to a lot. The catch is that an internal combustion engine is a complex mechanism that is assembled from many parts. The latter should work in unison, and most importantly, in strict sequence.
High or, conversely, too low engine temperature can lead to really serious problems. It is so big that it will not be possible to cope on our own and have to contact a repair shop, which is fraught with large expenses that nobody needs. In addition, if you drive a car with a cold engine, the service life of the latter will greatly decrease. That's how a small engine temperature sensor becomes an indispensable part of a car.
What are they like?
Most often, when it comes to such measuring devices, it is a coolant. This is the main application, but there are some others. For example, an engine temperature sensor can measure the heat of an oil. Some car models, mainly designed for racing, have devices for tracking gearbox heating and oil in the differential.
Why is new better than old?
Speaking in general terms, the principle of work has not changed. Actually, it cannot change - after all, the same parameter is measured, and nothing can be done about it. But here is a certain point in which the engine coolant temperature sensor in a modern unit is different - this is the dynamics of the indicators.
Older models are sharpened by measuring the temperature in a certain place, usually the capacity to which the fluid is poured. That is, the information you get is quite static, which can be interpreted in completely different ways.Modern models are arranged differently - this is a whole pleiad of various gauges that literally twist the cooling (and in some cases oil) channels. In this way, you can see which part of the motor overheats the most, and undertake something specific.True, the same evolution of cars can not really care about it right on the road. The on-board computer, having read the data provided by the engine temperature sensor, will independently make changes to the operating mode or display suggestions for optimization on the screen.
How does such a device?
To answer this question is quite simple, because, despite the multiplicity of details of the design, it all comes down to three main parts. First of all, it is, of course, the device itself, which takes the indicators. It is also necessary to note the sensor unit, which simultaneously monitors the operation of the first and transmits the received information.The third and final element is a simple wire connecting the first two.
No matter how funny it sounds, the problem often lies in it. That is, both parts of the design work normally, but everything is not coherent, because there is no connection between them.
Types of sensors
At the moment, produce two main types of gauges. They can be magnetic or bimetallic. This information does not particularly affect the work, since the principle is different, but the result remains the same.
Determining which one is installed in your car is easy - when turning on the engine, follow the pointer arrow. If it immediately takes off, then a magnetic sensor works here. In the same case, when some time passes, after which the slow movement begins, it is a bimetallic device.
Here everything is arranged according to a very simple principle - there are several coils, which are located on different sides of the rotary anchor, where the arrow is fixed. All this is connected directly to the mains of the machine - one is grounded right like that, and the other passes through the control unit, the resistance of which will give a temperature indicator.
Work is based on the current flowing through the coils.This creates a magnetic field that causes the movement of the armature as the temperature changes. Why it moves is a slightly different question - because of the difference in magnetic fields. The coils are on different sides of the anchor, inside and outside.
As a matter of fact, the principle of work here is based on both physics and chemistry.All substances can vary in size, depending on the environment, in this case, the role of an irritant is temperature.
In the device itself, the function of removing the indicator falls on a metal rod, which expands and contracts to values that are invisible to the human eye. But this is quite enough to change the indicators on the dashboard.
It is also precisely because of such a rather complex principle of operation that the removal of indicators slows down a bit when compared with magnetic sensors.
Older cars are often equipped with a third type, which is almost never used today. For example, the temperature sensor of the engine VAZ‘a may well be exactly so, if the car is seven or ten years old.
The device here is quite complex and fragile, because it was removed from production.The point is that the measuring tube passes through the entire engine, from the dashboard to the coolant tank. Hurt her - just spit, and will have to change the whole system.
It does not make sense to describe the principle of operation, since it is rather difficult to encounter such a device in “field conditions”. In addition, it would be better to turn it to a professional, since it is possible to damage something when replacing it.
Where is the engine temperature sensor in the car?
The most common option is to install directly in the motor housing. The block, in turn, can be in one of three places. It happens the thermostat case, a head of the block of cylinders or the top hose of a radiator.
So, it’s not necessary to search for a long time; you just need to inspect the upper part of the engine housing.Appearance is also not unique. The photo of the engine temperature sensor shown here is suitable for most cars. Just because they are made the same. Problems with the identification and search for a replacement will not arise.
Some features of the national automotive industry
Problems arise with this device not very often.But for some models of engines it can be a sad habit. For example, the temperature sensor, 406 engine which is equipped, breaks down quite often. There are even specialized reference books on the subject, so information is easy to find.
The most frequent suggestions are to simply change the model to the 402nd. Then the problems will be much less, and life will become much easier.Nevertheless, you already know about where the engine temperature sensor is located, and therefore you will be able to understand the simplest diagnostics. In any case, the on-board computer will display an error in the event of a malfunction, for example, the message “check engine” appears. Or you yourself may notice that the pointer is jamming, always showing the same temperature, or jumps to and fro may begin. The complete “dying” of the device is also likely, so the arrow will remain at zero.