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Home >> Hyundai >> 2017 >> Azera Base >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine Cooling System >> Thermostat >> Repair Procedures >> Inspection

Repair Procedures: Inspection

  1. Immerse the thermostat in water and gradually heat the water.
    Fig 1: Immersing Thermostat In Water
    G12087021Courtesy of HYUNDAI MOTOR AMERICA
  2. Check the valve opening temperature.

    Valve opening temperature: 

    88 ± 2°C (109.4 ± 3.6°F)

    Full opening temperature:  100°C (212°F)

    If the valve opening temperature is not as specified, replace the thermostat.

  3. Check the valve lift.

    Valve lift:  10 mm (0.3937 in.) or more at 95°C (203°F)

    If the valve lift is not as specified, replace the thermostat.

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