Intake Manifold: Service and Repair

Intake Manifold Removal and Installation

Intake Manifold And Exhaust System:

Removal
1. Remove the cowl cover and under-cowl panel).
2. Remove the air cleaner assembly.
3. Remove the intake air duct.





4. Remove the injector cover.





5. Disconnect the evaporative emission (EVAP) canister hose (A), brake booster vacuum hose (B), and positive crankcase ventilation (PCV) hose (C), and remove the power steering (P/S) hose clamp (D).





6. Remove the quick-connect fitting cover (A), then disconnect the fuel feed hose (B).





7. Remove the following engine wire harness connectors and wire harness clamps from the intake manifold:
^ Throttle actuator connector
^ Manifold absolute pressure (MAP) sensor connector
^ Evaporative emission (EVAP) canister purge valve connector
^ Intake manifold tuning (IMT) valve actuator connector

8. Disconnect and plug the water bypass hoses.





9. Remove the throttle body.





10. Remove the heater hose clamp bracket.





11. Raise the vehicle on the lift to full height.
12. Remove the intake manifold bracket.





13. Lower the vehicle on the lift.
14. Remove the all intake manifold mounting bolts and nuts, then remove the intake manifold from the cylinder head.





15. Remove the harness clamps, then remove the intake manifold from the vehicle.





Installation
1. Install the harness clamps to the intake manifold.





2. Install the intake manifold (A) with new gaskets (B), and tighten the bolts and nuts in a crisscross pattern in three steps, beginning with the inner bolt.





3. Raise the vehicle on the lift to full height.
4. Install the intake manifold bracket (A).





5. Lower the vehicle on the lift.
6. Install the heater hose clamp bracket.





7. Install the throttle body (A) with a new gasket (B).





8. Install the water bypass hoses.





9. Connect the following engine wire harness connectors, and install the wire harness clamps to the intake manifold:
^ Throttle actuator connector
^ Manifold absolute pressure (MAP) sensor connector
^ Evaporative emission (EVAP) canister purge valve connector
^ Intake manifold tuning (IMT) valve actuator connector

10. Connect the fuel feed hose (A), then install the quick-connect fitting cover (B).





11. Install the evaporative emission (EVAP) canister hose (A), brake booster vacuum hose (B), positive crankcase ventilation (PCV) hose (C), and power steering (P/S) hose clamp (D).





12. Install the injector cover.





13. Install the intake air duct.





14. Install the air cleaner assembly.
15. Install the cowl cover and under-cowl panel.
16. Clean up any spilled engine coolant.
17. After installation, check that all tubes, hoses, and connectors are installed correctly.
18. Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater valve open.