Flex AWD V6-3.5L (2009)
Thermostat: Service and Repair
Thermostat
Removal and Installation
1. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding See: Service and Repair/Cooling
System Draining, Filling and Bleeding.
2. Remove the Air Cleaner (ACL) assembly and outlet pipe.
3. Remove the 2 bolts and position aside the thermostat housing cover.
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To install, tighten to 10 Nm (89 lb-in).
4. Remove the O-ring seal and thermostat.
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Clean and inspect the O-ring seal. Install a new seal if necessary.
5. NOTICE: Early build vehicle (built before January 19, 2009) cooling systems are filled with Motorcraft(R) Premium Gold Engine
Coolant. Late build vehicle (built on or after January 19, 2009) cooling systems are filled with Motorcraft(R) Specialty Green Engine
Coolant. Mixing coolant types degrades the corrosion protection of the coolant. Do not mix coolant types. Failure to follow these
instructions may result in engine or cooling system damage.
NOTE: Lubricate the thermostat O-ring seal with clean engine coolant.
To install, reverse the removal procedure.
6. Fill and bleed the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding See: Service and
Repair/Cooling System Draining, Filling and Bleeding.
