Thermostat Bypass Pipes Replacement

Thermostat Bypass Pipes Replacement

Removal Procedure





1. Drain the cooling system.
2. Remove the spark plug wire harness from the thermostat bypass pipe.
3. Remove the air inlet duct.
4. Remove the upper radiator hose from the thermostat housing.
5. Disconnect the left engine mount strut from the engine.
6. Remove the Secondary Air Injection (A.I.R.) crossover pipe.
7. Remove the heater hose from the bypass pipe.
8. Remove the thermostat bypass pipe to throttle body nut.





9. Remove the thermostat bypass pipe to throttle body hose clamps (1).
10. Remove the thermostat bypass pipe to cylinder head nut (3).
11. Remove the thermostat bypass pipe bolt (4).
12. Remove the thermostat bypass pipe hose clamp (5),





13. Remove the thermostat bypass pipe hose.
14. Remove the thermostat bypass pipe.

Installation Procedure





1. Apply engine coolant to the bypass pipe seal in order to ease installation.
2. Install the thermostat bypass pipe.
3. Install the thermostat bypass pipe hose.





4. Install the thermostat bypass pipe hose clamp (5).

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the thermostat bypass pipe bolt (4).
^ Tighten the thermostat bypass pipe bolt to 11 Nm (98 inch lbs.).
6. Install the thermostat bypass pipe to cylinder head nut (3).
^ Tighten the thermostat bypass pipe nut to 25 Nm (18 ft. lbs.).
7. Install the thermostat bypass pipe to throttle body hose clamps (1).





8. Install the thermostat bypass pipe to throttle body nut.
^ Tighten the thermostat bypass pipe nut to 25 Nm (18 ft. lbs.).
9. Install the heater hose to the bypass pipe.
10. Install the A.I.R. crossover pipe.
11. Install the left engine mount strut from the engine.
12. Install the upper radiator hose to the engine.
13. Install the air inlet duct.
14. Install the spark plug wire harness to the thermostat bypass pipe.
15. Fill the cooling system.