Intake Air Plenum: Service and Repair

Fig. 9 Upper Intake Manifold Tightening Sequence:

REMOVE OR DISCONNECT
1. Negative battery cable
2. Engine cover.
3. Air cleaner box and intake duct.
4. Wire harnesses, including:
- Throttle Position Sensor (TPS).
- Idle Air Control (IAC) motor
- Manifold Absolute Pressure (MAP) sensor.
- Intake manifold tuning valve assembly.
5. Throttle, Throttle Valve (TV) linkage and cruise cable from upper intake manifold.
6. Ignition coil.
7. [1][2]PCV hose to upper intake manifold.
8. Vacuum hoses at front and rear of upper intake manifold.
9. A/C line at compressor (if equipped).
10. Upper intake manifold bolts and studs.
- Mark the location of all studs for proper reassembly.
11. Upper intake manifold.

NOTE: Do Not attempt to disassemble the Central Multiport Fuel Injector (CMFI) assembly, it is only serviceable as an assembly.

INSTALL OR CONNECT
1. Upper intake manifold gasket with green sealing lines facing up.
2. Upper intake manifold.
- Use care not to pinch the injector wires between the upper and lower intake manifolds.
3. Upper intake manifold bolts. Note the marks made at disassembly for proper stud location.
4. Tighten Bolts to 14 Nm (124 in lb) using the sequence shown in image.
5. A/C line to compressor.
6. [1][2]PCV hose to upper intake manifold.
7. Vacuum hoses to front and rear of upper intake manifold.
8. Throttle, TV linkage and cruise cable to upper intake manifold.
9. Ignition coil.
10. Wire harnesses, including: TPS, IAC, MAP and Intake manifold tuning valve assembly.
11. Air cleaner box and intake duct.
12. Engine cover.
13. Negative battery cable.