Since 2000 of release

Repair and car operation

Kia Rio
+ 1.1. Short acquaintance to the car
+ 2. Engines A3E, А5D
+ 3. Greasing system
- 4. Cooling system
   4.1. Specifications
   4.2. A cooling liquid
   4.3. Replacement of a cooling liquid
   4.4. The water pump
   4.5. A radiator
   4.6. Check of tightness of system of cooling
   4.7. The engine of the fan of a radiator
   4.8. Check of a cover of a radiator
   4.9. The valve of return pressure
   4.10. The thermostat
+ 5. Fuel system
+ 6. Ignition system
+ 7. Coupling
+ 8. A transmission
+ 9. Axes and power shafts
+ 10. A suspension bracket
+ 11. Wheels and tyres
+ 12. A steering
+ 13. Brake system
+ 14. A body
+ 15. Air central air
+ 16. The electric equipment

4.10. The thermostat

Sequence of removal of the thermostat

1 – a bolt, 19–25 Nm;
2 – the top hose of a radiator;
3 – a thermostat cover;
4 – a lining;
5 – the thermostat


1. Disconnect a wire from the negative plug of the storage battery.
2. Merge cooling liquid in the suitable container.
3. Disconnect from a thermostat cover the top hose of a radiator.
4. Turn out bolts of fastening of a cover of the thermostat.
5. Uncover the thermostat and the thermostat.


1. Visually check up a thermostat condition.
2. On a thread suspend the thermostat in a transparent vessel with water.
3. Insert into water the thermometer, heat up a vessel with water and observe of the thermostat valve. Define temperature of the beginning of opening and full opening of the valve of the thermostat.

Temperature of the beginning of opening of the valve of the thermostat: 86,5–89,5 С.
Temperature of full opening of the valve of the thermostat: 100 С.
Thermostat valve stroke: 8,0 mm


1. Establish the thermostat in a head of the block of cylinders so that the valve for air removal settled down from above.
2. Establish a new lining of the thermostat. At lining installation be convinced that the label on a lining is from outside heads of the block of cylinders.
3. Establish a casing of the thermostat and fix a bolt and nuts.
4. Fill in in cooling system necessary quantity of a demanded cooling liquid.
5. Connect a wire to the negative plug of the storage battery.
6. Start up the engine and check up absence of leaks from cooling system.