9-3 Coupe (9400) L4-2.0L Turbo (B204) (1999)
Thermostat: Service and Repair
Thermostat (B235R, B205L/R)
To remove
1. Open the expansion tank's pressure cap to release system pressure.
2. Raise the car.
3. Drain the coolant by connecting a hose and opening the drain plug. Collect the coolant in a suitable receptacle.
4. Check that the cooling system's drain plug is closed and lower the car to the floor.
5. Remove the cover over the throttle body.
6. Undo the hose clip on the upper radiator hose by the thermostat housing and bend the hose aside.
7. Remove the mounting for the coolant pipe by the thermostat housing.
8. Undo the upper and lower thermostat housing screws.