For 1990-2009 cars

Callout | Component Name
--- | ---

#### Preliminary Procedures

1. Partially drain the cooling system. Refer to Cooling System Draining and Filling.
2. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
3. Remove the heater inlet and outlet hoses. Refer to Heater Inlet Hose Replacement and Heater Outlet Hose Replacement.

1 | Thermostat Housing Bolt (Qty: 3) Caution: Refer to Fastener Caution in the Preface section.

#### Procedure

Remove the thermostat housing bolts.

Tighten
10 N·m (89 lb in)

2 | Thermostat Housing Bolt

#### Procedure

Remove the thermostat housing bolt.

Tighten
50 N·m (37 lb ft)

3 | Thermostat Housing
4 | Thermostat

#### Procedure

1. Remove the thermostat and discard the thermostat gasket.
2. Install a new thermostat gasket.