On cars VAZ-2115 thermostat iskey element of the cooling system. With it, the fluid circulates in large and small circles, so that the internal combustion engine operates as efficiently as possible, does not overlap. The thermostat is also necessary for effective warming up of the engine in cold weather. The normal temperature at which the fuel mixture is capable of igniting is about 90 degrees.
At temperatures below the working motionliquid in a small circle, so that the engine warms up much faster. But if the thermostat is faulty, all the liquid will only go into a small or large circle, which will lead to a very slow heating. Because of this, the consumption of gasoline increases, the engine's resource decreases, as it works a lot at idle.
Replacement tool
To replace the thermostat on the VAZ-2115 (injector), you will need the following tools:
- Several screwdrivers.It is desirable that they have different lengths and heads. When working with a cooling system, it is much more convenient to work with short screwdrivers. But the clamps can be unscrewed with the help of the end head on "6" or "8".
- Capacity is required, its capacity should be at least 10 liters.
- To diagnose a thermostat, you will need a small saucepan.
Be sure to check the operation of the device before installation. Even new items may have a manufacturing defect, it is advisable to identify it before installation.
Thermostat installation site
Attaches the device directly to the shirt.engine block cooling And regardless of the carburetor or injector type of motor. The first cars of the VAZ-2115 were equipped with carburetor injection engines. But very soon they were completely replaced by injectors, which are more modern and efficient.
The easiest way is to replace the thermostat.VAZ-2115, if you have a carburetor engine. This refers to the first modifications of "Samar" - "nines" and "eights". On the injection will have to completely remove the air filter housing. Otherwise, remove the thermostat for replacement will not work. Fastening device made with clamps. Newer versions of cars are equipped with modern designs. And there is no need to change the entire node, it is enough to put a new sensing element with a valve.
Thermostat Resource
Inside the device there is a valve thatdirects the liquid in the cooling system in large and small circles. When using ordinary water thermostat resource is reduced several times. And the valve is covered with a layer of scale, with the result that it is jammed in one position. It usually closes completely, with the result that the fluid moves only in a small circle. In this case, the stove works, but the liquid does not fall into the main radiator.
Moreover, the temperature increase is not onlywhen driving in the city, but also when driving at high speed. If you had such a breakdown, you must fully open the stove and turn on the fan to maximum. Please note that a few minutes in the mode of such overheating will necessarily lead to the deformation of the cylinder head. And it will need to be repaired. More rarely, the thermostat wedges in a position where the fluid moves in a large circle. It is not so scary in summer, but in winter the engine will not be able to warm up to operating temperature. And the functioning of the fuel injection and lubrication system is completely disrupted.
Thermostat removal
Dismantling the thermostat VAZ-2115 (injector 8 valves) can be performed by following the following algorithm:
- Allow the engine to cool. Never work on a hot motor. You can get severe burns.
- Cover the generator to prevent liquid from entering it. It is also advisable to disconnect the negative terminal from the battery.
- Drain the cooling system.To do this, use the holes in the jacket of the cylinder block and at the bottom of the radiator. Please note that the liquid will not go out until you unscrew the cap of the expansion tank.
- After that, it is necessary to unscrew all the clamps holding the thermostat on the pipes.
That's all, now you can completely dismantle the device from the engine.
Installing a new thermostat
Installation is carried out in reverse order.Please note that it is necessary to replace deformed and broken pipes. If this is not done, then leaks will appear. Since we started to repair the cooling system, check the condition of the pipes going to the radiator of the stove. They are close to the exhaust manifold and overheat. And it acts badly on the rubber from which they are made.
Be sure to check the health of the newthermostat. Pour a metal pot of water, heated to 80 degrees, gently lower the thermostat into it. When the water temperature reaches 87 degrees, the valve in the thermostat will slowly open. If this does not happen, then the device is defective. You can not install it, you will need to purchase a new one.
