| Item name | Spare part number | Description |
| 1 | - | Heater hoses, inlet and outlet |
| 2 | - | Heater hoses, inlet and outlet, for vehicles with rear heater (installed additionally) |
| 3 | - | Hose between radiator and intake manifold |
| 4 | - | Upper Radiator Hose |
| 5 | - | Engine coolant temperature sensor (EATING) |
| 6 | - | Water pump |
| 7 | - | throttle body |
| 8 | - | Intake manifold |
| 9 | - | Throttle Body Coolant Hose |
| 10 | - | Hose between engine and expansion tank |
| 11 | - | Expansion tank |
| 12 | - | Lower Radiator Hose |
| 13 | - | Engine oil cooler (in the presence of) |
| 14 | - | Hose (for models without engine oil cooler) |
| 15 | - | Hoses, inlet and outlet (for models with engine oil cooler) |
| 16 | - | Cooling Fan |
| 17 | - | Transmission Fluid Cooler Lines |
| 18 | - | lower radiator shroud |
| 19 | - | Radiator |
| 20 | - | Upper radiator shroud |
General information
A bypass-type cooling system is used, which circulates the coolant through the engine and the heater circuit when the main thermostat valve is closed. The main purpose of the engine cooling system is to maintain the optimum temperature of the engine when environmental conditions and engine operation change. Other functions of the cooling system include heating the vehicle interior and cooling the transmission fluid and engine oil.
The cooling system includes the following components:
- Radiator
- Car interior heater core
- Engine oil cooler (EOC)
- coolant pump
- Pressure control thermostat (PRT)
- Expansion tank
- Viscous fan
- Connecting hoses and pipelines
Engine cooling system
The coolant circulates through the system under the action of a centrifugal type pump installed in front of the engine and driven by an additional V-ribbed belt. The pump pumps coolant through the cylinder block and cylinder heads through a chamber located in the collapse of the cylinder block. After passing through the engine, the coolant returns to the thermostat housing through the bypass pipe. Coolant is also supplied through the top hose to the heater core. The coolant returns through the EOC to the PRT on the engine side.
The PRT housing contains a conventional thermostat, which is located so that the temperature of its sensing element is determined by the flow of coolant from both the radiator and the bypass channel. As a result, the opening temperature of the thermostat may vary depending on the environmental conditions. The PRT also has a spring loaded valve that restricts the flow of liquid through the bypass. This means that the engine can temporarily run without fluid flowing through the bypass, which in turn improves the performance of the interior heater.
The horizontal flow radiator has an aluminum alloy core and a drain cock on the lower right side of the rear. The lower radiator mounts are located at the ends of the radiator tanks. The mounts have rubber bushings that sit on top of the car body rails. The upper part of the radiator is fastened with pins that are passed through rubber bushings mounted on the front bearing element (FEC) above the radiator. Also built into the radiator are two connections for the transmission fluid cooler lines.
The upper radiator hose is connected to the PRT thermostat by a bypass hose, and the lower hose is directly connected to the outlet of the thermostat housing.
The expansion tank is installed in front of the left suspension support cup in the engine compartment. The expansion tank receives an excess amount of working fluid from the cooling system when it expands due to heating and, conversely, when the engine cools down, it compensates for its amount with a decrease in volume. Also, air accumulated in the coolant is discharged through this tank.
The transmission fluid cooler is installed on the side of the cold reservoir of the radiator. It is located in the middle of the left radiator tank.
To supply additional air through the core of the radiator, which is especially important when the vehicle is stationary, a viscous fan driven by the engine is used, located behind the radiator. This fan serves the engine cooling system and the air conditioner cooling system. The applied fan has left rotation.
The speed of the viscous fan is optimally controlled by the ECM to suit all operating conditions.
NOTE: If the electrical connectors are disconnected from the viscous fan, it will rotate at "Idling", which can cause the engine to overheat. In this case, the ECM will store the corresponding DTC in memory.
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