Thermostat

Thermostat - 3.5L













Removal and Installation

1. Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Service and Repair.

2. Remove the air cleaner and outlet pipe. For additional information, refer to Fuel Delivery and Air Induction.

3. Disconnect the lower radiator hose from the thermostat housing cover and position it aside.

4. Remove the 2 bolts, thermostat housing cover, O-ring seal and thermostat.
- Clean and inspect the O-ring seal. Install a new seal if necessary.

- To install, tighten to 10 Nm (89 lb-in).

5. NOTICE: Early build vehicle (built before July 6, 2009) cooling systems are filled with Motorcraft(R) Premium Gold Engine Coolant. Late build vehicle (built on or after July 6, 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.

NOTICE: Genuine Mazda(R) Extended Life Coolant and Motorcraft(R) Specialty Green Engine Coolant are very sensitive to light. Do NOT allow these products to be exposed to ANY LIGHT for more than a day or two. Extended light exposure causes these products to degrade.

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 Service and Repair.