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Ford
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2008
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Ranger 4WD V6-4.0L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Thermostat
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Specifications
Thermostat: Specifications
Thermostat Opening Temperature
Fully Open
97-106°C (206.6-222.8°F)
Starts to open
90°C (194°F)