SX4 4WD L4-2.0L (2008)
Thermostat: Testing and Inspection
Thermostat Inspection
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Make sure that air bleed valve (1) of thermostat is clean.
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Check to make sure that valve seat (2) is free from foreign matters which would prevent valve from seating tight.
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Check thermostat seal (3) for breakage, deterioration or any other damage.
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Check thermostatic movement of wax pellet as follows:
a. Immerse thermostat (1) in water, and heat water gradually.
b. Check that valve starts to open at specific temperature.
Temperature at which valve begins to open 80 - 84°C (176 - 183°F)
Temperature at which valve become fully open 95 - 97°C (203 - 206°F)
Valve lift: More than 8 mm (0.31 in.) at 95°C (203°F)
If valve starts to open at a temperature substantially below or above specific temperature, thermostat unit should be replaced with a new one. Such a
unit, if reused, will bring about overcooling or overheating tendency.
