Intake Air System
REMOVAL / INSPECTION / INSTALLATION1. Remove in the order shown in the figure, referring to Removal Note.
2. Inspect all parts and repair or replace as necessary.
3. Install in the reverse order of removal, referring to Installation Note.
1. Air intake hose
2. Air cleaner housing
3. Mass air flow sensor
4. Intake air temperature sensor
5. Idle air control solenoid
6. Ignition coil and bracket assembly
7. Upper intake manifold / throttle body assembly
8. Intake manifold (not shown)
Removal Note
Upper intake manifold / Throttle body assembly
1. Remove the accelerator cable shield.
2. Disconnect the vacuum hoses from the upper intake manifold / throttle body assembly.
3. Disconnect the accelerator and cruise control cables.
4. Remove the ignition coil and bracket assembly and the ignition coil support bracket.
5. Disconnect the throttle position sensor and air intake temperature sensor connectors.
6. Remove the upper intake manifold I throttle body assembly and discard the gasket.
Intake manifold
1. Drain the coolant.
2. Release fuel pressure from the fuel system to reduce the possibility of injury or fire.
3. Disconnect the fuel supply line using the SST.
4. Disconnect the fuel return line using the SST.
5. Disconnect the engine coolant temperature sensor.
6. Disconnect the fuel injector wiring harness.
7. Disconnect the vacuum hoses from the pressure regulator.
8. Remove the fuel rail and injectors.
9. Disconnect the upper radiator hose from the thermostat housing.
10. Disconnect the heater hoses.
11. Remove the cylinder head covers.
12. Remove the intake manifold and discard the gasket.
Installation Note
Intake manifold
1. Apply a small amount of clean engine oil to all retaining bolts and stud threads before installing them.
2. Apply appropriate sealant to the intersection of the cylinder block and cylinder head at the 4 corners.
3. Install new intake manifold gaskets and seals.
4. Install fuel injectors and the fuel rail to the intake manifold.
5. Install the intake manifold carefully, without damaging the sealant.
6. Install all bolts hand-tight. Then tighten bolts in two steps in the order shown.
Tightening torques:
Step 1: 15 N-m (11 ft-lb)
Step 2: 26 N-m (19 ft-lb)
7. Install the cylinder head covers.
Tightening torque: 12 N-m (9 ft-lb)
8. Connect the heater hoses and upper radiator hose.
9. Connect the vacuum hoses to the pressure regulator.
10. Connect the fuel injector wiring harness.
11. Connect the engine coolant temperature sensor connector.
12. Connect the fuel supply and return lines.
13. Fill the radiator with specified coolant.
Upper intake manifold / Throttle body assembly
1. Clean and apply a small amount of clean engine oil to all bolts and stud threads before installing them.
2. Install a new gasket.
3. Install the upper intake manifold I throttle body assembly.
4. Tighten the upper intake manifold/throttle body assembly bolts in the order shown.
Tightening torque: 25 N-m (19 ft-lb)
5. Connect the throttle position sensor and intake air temperature sensor connectors.
6. Install the ignition coil and bracket assembly and the ignition coil support bracket.
7. Connect the accelerator and cruise control cables.
8. Connect the vacuum hoses to the upper intake manifold, throttle body assembly.
9. Install the accelerator cable shield.