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![INFINITI FX35 2004 Service Manual EM-172
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AIR CLEANER AND AIR DUCT
Revision: 2004 November 2004 FX35/FX45
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationABS006IB
REMOVAL
1. Remove engine cover with power tool. Refer INFINITI FX35 2004 Service Manual EM-172
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AIR CLEANER AND AIR DUCT
Revision: 2004 November 2004 FX35/FX45
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationABS006IB
REMOVAL
1. Remove engine cover with power tool. Refer](/manual-img/42/57021/w960_57021-2896.png)
EM-172
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AIR CLEANER AND AIR DUCT
Revision: 2004 November 2004 FX35/FX45
AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationABS006IB
REMOVAL
1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect vacuum hose and PCV hose.
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly disconnecting their joints.
Add marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case.
CAUTION:
Handle mass air flow sensor with following cares.
Do not shock it.
Do not disassemble it.
Do not touch its sensor.
INSTALLATION
Note to the following, and install in the reverse order of removal.
1. Air duct and resonator assembly 2. Bracket 3. Vacuum hose
4. Mass air flow sensor 5. O-ring 6. Air cleaner case
7. Air cleaner filter 8. Cover 9. Air cleaner case
10. Resonator 11. Mounting rubber 12. Air duct (inlet)
13. Clip
PBIC1657E
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AIR CLEANER AND AIR DUCT
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Align marks. Attach each joint. Screw clamps firmly.
Changing Air Cleaner FilterABS00A2T
REMOVAL
1. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly.
2. Remove air cleaner filter from air cleaner case.
INSTALLATION
Install in the reverse order of removal.
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EM-174
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INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
INTAKE MANIFOLDPFP:14003
Removal and InstallationABS006IC
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine coolant when the engine is hot.
1. PCV tube 2. Engine cover rear bracket 3.EVAP canister purge control sole-
noid valve
4. EVAP hose 5. EVAP tube 6. EVAP hose
7. Vacuum gallery 8. Engine cover front bracket 9. Vacuum tank
10. VIAS control solenoid valve 11. Water gallery 12. Gasket
13. Intake manifold (lower) 14. Gasket 15. Water hose
16. Intake manifold adapter 17. Electric throttle control actuator 18. Gasket
19. Intake manifold (upper) 20. Resonator 21. EVAP service port
PBIC3502E
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![INFINITI FX35 2004 Service Manual INTAKE MANIFOLD
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1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Release fuel pressure INFINITI FX35 2004 Service Manual INTAKE MANIFOLD
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1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Release fuel pressure](/manual-img/42/57021/w960_57021-2899.png)
INTAKE MANIFOLD
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1. Remove engine cover with power tool. Refer to EM-168, "ENGINE ROOM COVER" .
2. Release fuel pressure. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
3. Drain engine coolant. Refer to CO-36, "
Changing Engine Coolant" .
4. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly. Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
5. Disconnect fuel feed hose quick connector on engine side.
Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
6. Remove fuel damper and fuel hose assembly. Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
While hoses are disconnected, plug them to prevent fuel from draining.
Do not separate fuel damper and fuel hose.
7. Remove or disconnect harnesses, brackets, vacuum hose, vacuum gallery and PCV hose and tube from
intake manifold (upper).
8. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts diagonally.
CAUTION:
Handle carefully to avoid any shock to electric throttle control actuator.
Do not disassemble.
9. Disconnect water hoses from water gallery.
10. Remove intake manifold adaptor and water gallery.
11. Loosen bolts in reverse order as shown in the figure to remove
intake manifold (upper) with power tool.
12. Remove vacuum tank form intake manifold (lower).
13. Remove fuel injector and fuel tube assembly. Refer to EM-188, "
FUEL INJECTOR AND FUEL TUBE" .
14. Loosen bolts in reverse order as shown in the figure to remove
intake manifold (lower) with power tool.
SBIA0353E
PBIC0014E
PBIC0015E
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![INFINITI FX35 2004 Service Manual EM-176
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INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
15. Remove intake manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
INFINITI FX35 2004 Service Manual EM-176
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INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
15. Remove intake manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL](/manual-img/42/57021/w960_57021-2900.png)
EM-176
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INTAKE MANIFOLD
Revision: 2004 November 2004 FX35/FX45
15. Remove intake manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of both the intake manifold (upper
and lower) mating surfaces with straightedge and feeler gauge.
If it exceeds the limit, replace intake manifolds (lower and/or
upper).
INSTALLATION
Note to the following, and install in the reverse order of removal:
Intake Manifold (Lower)
Tighten in numerical order as shown in the figure.
There are two types of mounting bolts. Refer to the following for
locating bolts.
Intake Manifold (Upper)
Tighten in numerical order as shown in the figure.
There are two types of mounting bolts. Refer to the following for
locating bolts
Electric Throttle Control Actuator
Install intake manifold adapter gasket and electric throttle control actuator gasket so that three protrusions
for installation identification do not face downward.
Tighten mounting bolts of electric throttle control actuator equally and diagonally in several steps.
After installation perform procedure in EM-177, "INSPECTION AFTER INSTALLATION" .
Water Hose
Insert hose by 27 to 32 mm (1.06 to 1.26 in) from connector end.
Vacuum Hose
Refer to EC-677, "Vacuum Hose Drawing" . Limit : 0.1 mm (0.004 in)
PBIC0016E
M8 × 90 mm (3.54 in) : 7, 8
M8 × 35 mm (1.38 in) Except the above
PBIC0015E
M8 × 80 mm (3.15 in) : 4, 5, 6, 7
M8 × 25 mm (0.98 in) : Except the above
PBIC0014E
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INTAKE MANIFOLD
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INSPECTION AFTER INSTALLATION
Perform the “Throttle Valve Closed Position Learning” when harness connector of electric throttle control
actuator is disconnected. Refer to EC-698, "
Throttle Valve Closed Position Learning" .
Perform the “Idle Air Volume Learning” and “Throttle Valve Closed Position Learning” when electric throt-
tle control actuator is replaced. Refer to EC-698, "
Idle Air Volume Learning" .
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![INFINITI FX35 2004 Service Manual EM-178
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationABS006ID
REMOVAL
WARNING:
Perfor INFINITI FX35 2004 Service Manual EM-178
[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationABS006ID
REMOVAL
WARNING:
Perfor](/manual-img/42/57021/w960_57021-2902.png)
EM-178
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationABS006ID
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
2. Remove front and rear engine undercovers with power tool.
3. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator
assembly. Refer to EM-172, "
AIR CLEANER AND AIR DUCT" .
4. Remove front cross bar. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
5. Drain engine coolant from radiator. Refer to CO-36, "
Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
6. Remove radiator. Refer to CO-39, "
RADIATOR" .
7. Remove drive belts. Refer to EM-169, "
DRIVE BELTS" .
8. Remove heated oxygen sensors as follows:
a. Disconnect harness connector of each heated oxygen sensors.
1. Heated oxygen sensor 1 (bank 2) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Gasket 5. Exhaust manifold (left bank) 6. Exhaust manifold cover (left bank)
7. Heated oxygen sensor 1 (bank 1) 8. Three way catalyst cover (right bank) 9. Three way catalyst (right bank)
10. Heated oxygen sensor 2 (bank 2) 11. Gasket 12. Three way catalyst cover (left bank)
13. Heated oxygen sensor 2 (bank 1) 14. Three way catalyst (left bank) 15. Mounting bracket
16. Mounting bracket
PBIC3503E
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![INFINITI FX35 2004 Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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b. Remove heated oxygen sensor 1 and 2 on both bank with
heated oxygen sensor w INFINITI FX35 2004 Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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b. Remove heated oxygen sensor 1 and 2 on both bank with
heated oxygen sensor w](/manual-img/42/57021/w960_57021-2903.png)
EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2004 November 2004 FX35/FX45
b. Remove heated oxygen sensor 1 and 2 on both bank with
heated oxygen sensor wrench (SST).
Put marks to identify installation positions of each heated oxy-
gen sensor.
CAUTION:
Be careful not to damage heated oxygen sensor.
Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
one.
9. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission.
Refer to EX-3, "
EXHAUST SYSTEM" .
10. Disconnect A/C piping from A/C compressor, then remove A/C compressor with power tool. Refer to AT C -
139, "Components" .
11. Remove alternator and bracket. Refer to SC-23, "
CHARGING SYSTEM" .
12. Remove exhaust front tube with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-19, "
POWER STEERING GEAR AND LINKAGE" .
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
16. Loosen mounting nuts in reverse order as shown in the figure to
remove exhaust manifold.
NOTE:
Disregard the numerical order No. 9 to 12 in removal.
17. Remove exhaust manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
PBIC2333E
PBIC2334E
PBIC1549E