Before leaving, it is initially required to visually inspect the vehicle for leaks and malfunctions. When moving to a car, you need to monitor all indicators of devices. Important data are the readings of the engine temperature sensor . Problems with the cooling system can lie in wait at any time of the year. Hot weather promises a possible overheating, cold winter cold can lead to excessive cooling of the engine.
What causes a decrease in temperature
Any equipment is not immune from the failure of some components and assemblies. It is necessary to pay attention to the condition of the machine and its systems. An unpleasant situation, when the engine temperature drops during movement, is due to faults in the elements of the cooling system. To understand the essence of the problem, you need to have a general idea of how the power plant is cooled.
It is necessary to control the level of coolant and the condition of the connecting pipes and the radiator itself. The system has small and large cooling circuits. The difference is that the full circulation circuit drives the fluid through the radiator. The circuit switching mechanism is called a thermostat. Situations when the engine temperature does not rise often occur in winter. Rarely on the instrument panel is a faulty status indicator of the working fluid. It is possible to use some materials to warm the power plant.
How to diagnose the cause of a decrease in motor temperature
If in motion the arrow of the sensor falls and stops responding for some time, then the problem is in the malfunction of the sensor itself, and it will need to be replaced.
Movement is carried out at an average speed (70 km / h), while maintaining a low engine temperature . In most cases, the problem is jamming the thermostat. When heating the heat-transfer fluid, the device switches the stroke to a large circle of circulation and acts as a regulator. In winter, the liquid walks almost all the time along a small circuit without the participation of a radiator.
Natural airflow is sufficient to maintain the operating temperature of a running engine. But when the thermostat is jammed in the open position, the heat sink will not be able to fully occur. The power plant simply will not be able to generate so much heat to heat the heat-transfer medium in the regime of a large circulation circuit. Here you need to replace the thermostat.
Checking the operation of the temperature controller can be carried out without moving the car. On the spot, you will need to start and warm up the car for 20-30 minutes. After these steps, open the hood of the car and try heating the pipes at the top and bottom of the radiator. One tube should be warm, the other cold. If the pipes have an equal temperature, then the thermostat is out of order.
If the car engine warms up for a long time and the engine temperature does not rise, the cause is a malfunction of the valve of the device.
Features of cooling domestic cars
The winter time of the year never passes carefree for motorists who own early brands of the Zhiguli. Engine temperature (VAZ-Six is no exception) is often disappointing due to a sufficient number of flaws in the design of the thermostat and piping of the cooling system. There is a possibility in the cold season that the motor will not be able to gain operating temperature due to natural block blowing. Therefore, motorists use the function of closing the blinds located near the radiator. In their absence, the use of other devices is possible.
Many car owners use engine insulation (put a blanket or a special cloth that retains heat). There is a method for maintaining the heat of the system when moving - to dismantle the
fan impeller to avoid additional airflow.
What should be the temperature of the power plant
When the motor is operating, the nominal indices of its heating range from 80-90 degrees. Low values will indicate problems. If the necessary heat transfer is not maintained, fuel consumption will increase and power loss will occur. Before starting the movement, the motor needs warming up to 40-50 degrees.
What to take to troubleshoot
The easiest way is to replace the failed device. But on the early brands of domestic technology, even new thermostats do not always cope with their function when the engine temperature systematically drops during movement.
The cause of the trouble is the imperfection of its design. There is a way to install more advanced controls. They are installed on the tenth model of the VAZ. Such a thermostat is equipped with six holes, is able to make the temperature of the engine in winter effectively maintained, and is collapsible. Subsequently, it will not be necessary to completely replace the assembly, only faulty elements. Moreover, in the summer season, the work of thermostats is no different.
Is it possible to slow down the cooling of the motor in the cold
In the past, different materials have been used to create engine insulation. These are the various felt fabrics available. But such decisions were briefly warm. Nowadays modern heat-insulating car blankets are used.
Their composition does not allow ignition, which positively affects the safety of operation of the vehicle. Also, numerous engine warm-ups are not required. This will save time and fuel. When too severe weather conditions are observed, such techniques will be able to retain heat in a short period of time. It is possible to use special covers for the radiator. Its lower part, together with the pipe, must be thermally insulated so that a stable temperature of the running engine is maintained.
Actions in preparing the cooling system for winter
The winter period of operation is difficult for all car owners. Being fully equipped will help with the preparatory work. It is necessary to check the operability of the protective shutters, the fan drive belt and the pump, fill in the liquid for working at low temperatures (antifreeze, antifreeze), check the condition of the thermostat.
The amount of antifreeze that needs to be charged into the system should be 5-6% less than a simple liquid - when heated, it tends to expand. When switching to winter operation, a chemical agent must be driven through the cooling system to remove scale and rust. When the engine temperature drops during movement, the algorithm of actions is clear.
Use of water as a cooling medium
The use of water for cooling the power plant in the winter is not recommended, but allowed. It is necessary to fill the system with already heated water in order to exclude heavy engine starting with increased wear of parts. The radiator and motor must be insulated. Heated water must be poured with open drain valves several times. Then close the taps, fill the system and start the launch.
After the trip, the liquid must be drained when it cools down to 45-50 degrees. If you empty the system immediately upon arrival, cracks and other defects may appear. Leaving the system with water in frosty conditions is unacceptable. When freezing, the fluid will expand and cause the motor, radiator and other components to become unusable.
Do-it-yourself thermostat check
When the temperature of the engine unreasonably drops during movement, it will be necessary to dismantle this element, prepare containers with liquid, place the device there and find out at what temperature the valve will open. If this does not happen, then it is malfunctioning.
To carry out work on the removal of any mechanisms, you need to have a concept about their structure. Otherwise, other unplanned problems may occur. If there is no idea about the arrangement of mechanisms, then it is worth contacting specialists who perform qualitatively these works. They will additionally provide some useful tips and answer questions of interest.