Honda Civic. Manual — part 391

Fig. 27: Identifying Liquid Gasket Applying Line
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Install the water outlet (A), then install the ECT sensor 1 (B) with a new O-ring

(C).

NOTE:

Wait at least 30 minutes to allow liquid gasket to
cure before filling the engine with coolant.

Do not run the engine for at least 3 hours to allow
liquid gasket to cure after installing the water outlet.

2008 Honda Civic GX

2006-08 ENGINE Cooling System (R18A1) - Civic (Except Hybrid)

5. Install the air cleaner housing bracket (A), upper radiator hose (B), and water

bypass hose (C).

Fig. 29: Identifying Torque Specifications Of Air Cleaner Housing
Bracket Bolt
Courtesy of AMERICAN HONDA MOTOR CO., INC.

6. Connect the engine temperature (ECT) sensor 1 connector (A).

Fig. 28: Identifying Torque Specifications Of Water
Outlet Bolts
Courtesy of AMERICAN HONDA MOTOR CO., INC.

2008 Honda Civic GX

2006-08 ENGINE Cooling System (R18A1) - Civic (Except Hybrid)

Fig. 30: Identifying Engine Temperature Sensor 1 Connector With
Tightening Torques
Courtesy of AMERICAN HONDA MOTOR CO., INC.

7. Install the harness holder (B) on the cylinder head, then install the air cleaner

housing bracket (C).

8. Install the air cleaner assembly (see THROTTLE BODY CLEANING ).
9. Refill the radiator with engine coolant, and bleed the air from the cooling

system with the heater valve open (see step 8).

HEATER OUTLET REPLACEMENT

1. Drain the engine coolant (see COOLANT REPLACEMENT ).
2. Remove the air cleaner assembly (see THROTTLE BODY CLEANING ).
3. Remove the heater hose (A) from the clamp.

Fig. 31: Identifying Heater Hose
Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Remove the heater hose (B) and water bypass hose (C).
5. Remove the heater outlet (A).

2008 Honda Civic GX

2006-08 ENGINE Cooling System (R18A1) - Civic (Except Hybrid)

Fig. 32: Identifying Heater Outlet With Tightening Torque
Courtesy of AMERICAN HONDA MOTOR CO., INC.

6. Install the heater outlet with a new gasket (B).
7. Install the other parts in the reverse order of removal.
8. Refill the radiator with engine coolant, and bleed the air from the cooling

system with the heater valve open (see step 8).

RADIATOR AND FAN REPLACEMENT

1. Make sure you have the anti-theft code for the audio system and the navigation

system (if equipped), then write down the audio presets.

2. Disconnect the negative cable from the battery, then disconnect the positive

cable.

3. Remove the battery.
4. Drain the engine coolant (see COOLANT REPLACEMENT ).
5. Remove the bulkhead cover.
6. Disconnect the fan motor connectors (A) and hood switch connector (B), then

remove the harness clamps (C).

2008 Honda Civic GX

2006-08 ENGINE Cooling System (R18A1) - Civic (Except Hybrid)