Thermostat check

Slowly heat the thermostat in a bath of water. In this case, the thermostat should not touch the walls of the bath and should be completely immersed in water. Check the water temperature with a suitable thermometer.



As soon as the water temperature reaches the opening start temperature, the thermostatic valve should begin to open.

Engine	Opening temperature,°С
4-cylinder petrol	+85 to +89
V6	from +79 to +83
Diesel	from +69 to +72

Check if the thermostat valve closes completely when it cools down, otherwise replace the thermostat.