(6) Connect electrical connectors to the following
components:
• Manifold Absolute Pressure (MAP) Sensor
• Throttle Position Sensor (TPS) Sensor
• Idle Air Control (IAC) Motor
(7) Install throttle cable bracket.
(8) Connect throttle and speed control cables to
bracket and throttle arm (Refer to 14 - FUEL SYS-
TEM/FUEL INJECTION/THROTTLE CONTROL
CABLE - INSTALLATION).
(9) Install air inlet resonator and inlet tube. Con-
nect Inlet Air Temperature (IAT) Sensor connector.
(10) Connect negative cable to battery remote
jumper terminal.
INTAKE MANIFOLD - LOWER
REMOVAL
(1) Release fuel system pressure. (Refer to 14 -
FUEL SYSTEM/FUEL DELIVERY - STANDARD
PROCEDURE)
(2) Remove upper intake manifold. (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE MANIFOLD -
REMOVAL)
(3) Disconnect electrical connectors from the fuel
injectors.
(4) Remove fuel supply hose from fuel rail. (Refer
to 14 - FUEL SYSTEM/FUEL DELIVERY/FUEL
LINES - STANDARD PROCEDURE)
(5) Remove screw attaching fuel rail support
bracket to the throttle body support bracket.
(6) Remove bolts attaching fuel rail.
(7) Remove fuel rail and injectors as an assembly.
(8) Remove manifold attaching bolts (Fig. 108).
(9) Remove lower manifold.
(10) Inspect manifold. (Refer to 9 - ENGINE/MAN-
IFOLDS/INTAKE MANIFOLD - INSPECTION)
INSPECTION
Check manifold for:
• Damage and cracks
• Gasket surface damage or warpage
• Damaged fuel injector ports
If the manifold exihibits any of these conditions,
replace the manifold.
INSTALLATION
(1) Clean and inspect sealing surfaces of cylinder
head and manifold. Gaskets can be reused provided
they are free of cuts or tears.
(2) Position manifold on cylinder head surfaces.
NOTE: For ease of installing upper intake manifold,
install a bolt2–3turns to the rearmost attaching
hole of intake. This will properly position lower
manifold.
(3) Install fuel rail with injectors.
(4) Install manifold attaching bolts and tighten in
sequence shown in (Fig. 108) to 12 N·m (105 in. lbs.).
Remove bolt used for aligning manifold.
(5) Connect the fuel injector electrical connectors.
NOTE: Make sure fuel injectors are located in the
correct location and position, as upper intake man-
ifold interference could occur.
(6) Install screw attaching fuel rail support
bracket to the throttle body support bracket.
(7) Connect fuel supply hose to fuel rail. (Refer to
14 - FUEL SYSTEM/FUEL DELIVERY/FUEL LINES
- STANDARD PROCEDURE)
(8) Install upper intake manifold. (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE MANIFOLD -
INSTALLATION)
Fig. 108 Lower Intake Manifold Tightening
Sequence
9 - 74 ENGINE 2.7L LH
INTAKE MANIFOLD - UPPER (Continued)
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