Lower

Removal
1. Release the fuel pressure.
2. Remove the upper intake manifold.
3. Disconnect the fuel lines.
4. Disconnect the battery ground cable.





5. Disconnect the fuel charging wiring harness electrical connectors.
1 Engine Coolant Temperature (ECT) sensor electrical connector.
2 Exhaust Gas Recirculation (EGR) back pressure transducer.
3 Fuel injectors.
4 Position fuel charging wiring to one side.





6. Disconnect the vacuum hose from the fuel pressure regulator.





7. CAUTION: Do not loosen or bend the Intake Manifold Runner Control (IMRC) cable bracket. Bracket alignment is critical and damage to the IMRC actuator may occur.

Disconnect the IMRC actuator cable from the stud and bracket.





8. NOTE: Remove the bolts in the indicated sequence.

Remove the lower intake manifold and discard the gaskets.

Installation





1. NOTE: Install new gaskets with the locating lugs facing downwards.

NOTE: Tighten the bolts in the indicated sequence.

Install the lower intake manifold.





2. Connect the IMRC actuator cable to the stud and bracket.





3. Connect the vacuum hose to the fuel pressure regulator.





4. NOTE: Begin installation of injector connectors at the front of the engine and work to the rear.

Install the fuel injection system wining harness.
1 Connect the ECT sensor.
2 Connect the EGR sensor.
3 Connect the fuel injectors.
5. Connect the fuel lines.
6. Install the upper intake manifold.

7. NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

Connect battery ground cable.