Lower
REMOVAL1. Relieve fuel system pressure. Refer Powertrain Management.
2. Disconnect battery ground cable. Refer to Starting and Charging.
3. Remove upper intake manifold.
4. Disconnect fuel supply and return lines from fuel injection supply manifold. Refer Powertrain Management.
5. Disconnect intake manifold runner control deactivation cable from lower intake manifold (IMRC). Remove cable from bracket and position aside.
6. Disconnect engine control sensor wiring from fuel injectors and wiring retainers. Position engine control sensor wiring out of the way.
7. If required, remove fuel injection supply manifold and fuel injectors from lower intake manifold (IMRC). Refer to Powertrain Management.
8. Remove lower intake manifold to cylinder head retaining bolts.
9. Remove lower intake manifold (IMRC) from cylinder heads.
10. Remove intake manifold gaskets from cylinder heads and discard intake manifold gaskets.
INSTALLATION
NOTE: Verify operation of intake manifold runner control plate operation.
1. Follow removal procedure in reverse order using new intake manifold gaskets.
2. Tighten lower intake manifold retaining bolts to 18-28 Nm (14-20 ft. lbs.) using standard tightening sequence.
3. Connect fuel supply and return lines.