Removal and Installation
WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The thermostat and thermostat housing are serviced as an assembly.
- With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to JACKING & LIFTING .
- Drain the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .
- Remove the accessory drive belt tensioner. For additional information, refer to REMOVAL AND INSTALLATION .
- Disconnect the Knock Sensor (KS) electrical connector and detach the wiring harness pin-type retainer.
- Disconnect the heater hose at the thermostat housing.NOTE: Disconnecting the heater hose first will aid in the removal of the bottom thermostat housing bolt.
- Remove the 3 bolts and reposition the thermostat housing to gain access to the lower radiator hose clamp.
- Remove and discard the gasket.
- To install, tighten to 10 Nm (89 lb-in).
NOTE: The view of the thermostat housing bolts is obstructed by A/C and engine components. However, the bolts can be removed using 1/4-in drive hand tools. - Disconnect the lower radiator hose at the thermostat housing.
- To install, reverse the removal procedure.
- Install a new gasket.
- Fill and bleed the cooling system. For additional information, refer to COOLING SYSTEM DRAINING, FILLING AND BLEEDING .