Tiburon L4-1.8L (1997)
Thermostat: Testing and Inspection
Immerse thermostat in hot coolant to check proper valve opening temperature.
Replace if necessary.
Standard Values:
Valve opening temperature: 82° C (177° F).
Full opening temperature: 95° C (205° F).
Valve lift (at full open): 8.5 mm (0.33 inch) or more.