Tools Required

J 38185 Hose Clamp Pliers

1. Drain the engine coolant from the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
2. Carefully remove the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L.
3. Remove the LH engine mount strut. Refer to Engine Mount Strut Replacement in Engine Mechanical - 3.1L.
4. Remove the spark plug wires at the left bank. Refer to Spark Plug Wire Harness Replacement in Engine Electrical.
5. Use the J 38185 in order to reposition the hose clamp at the thermostat housing. Remove the upper radiator hose from the housing. Refer to Cooling System Draining and Filling in Engine Cooling.



6. Disconnect the heater outlet hose from the thermostat bypass pipe (2).
7. Disconnect the throttle body inlet and outlet hoses from the thermostat bypass pipe (1).



8. Remove the thermostat bypass pipe-to-throttle body nut.



9. Use the J 38185 in order to reposition the hose clamp at the thermostat bypass pipe.
10. Disconnect the thermostat bypass pipe hose.



11. Remove the thermostat bypass pipe-to-engine front cover bolt.
12. Remove the thermostat bypass pipe.

1. Install the thermostat bypass pipe.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the thermostat bypass pipe to the engine front cover.

Tighten
Tighten the thermostat bypass pipe bolt to 11 N·m (98 lb in).




3. Use the J 38185 in order to reposition and secure the hose clamp at the thermostat bypass pipe.
4. Connect the thermostat bypass pipe hose.



5. Install the thermostat bypass-to-throttle body stud.
6. Install the thermostat bypass pipe-to-throttle body nut.

Tighten
Tighten the nut to 25 N·m (18 lb ft).




7. Connect the heater outlet hose to the thermostat bypass pipe (2).
8. Connect the throttle body inlet and outlet hoses to the thermostat bypass pipe (1).



9. Connect the inlet hose at the thermostat housing.
10. Use the J 38185 in order to reposition and install the inlet hose clamp at the thermostat housing.
11. Install the spark plug wires at the left bank. Refer to Spark Plug Wire Harness Replacement in Engine Electrical.
12. Install the LH engine mount strut. Refer to Engine Mount Strut Replacement in Engine Mechanical - 3.1L.
13. Carefully install the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.1L.
14. Fill the cooling system. Refer to Cooling System Draining and Filling in Engine Cooling.
15. Inspect for leaks.