2008 INFINITI FX35 radiator

EI-8
< SERVICE INFORMATION >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area c an often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun-visor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
SEATS
When isolating seat noise it's important to note the pos ition the seat is in and the load placed on the seat when
the noise is present. These conditions should be dupl icated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted under-hood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the \
vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
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EM-54
< SERVICE INFORMATION >[VQ35DE]
FRONT TIMING CHAIN CASE
FRONT TIMING CHAIN CASE
Removal and InstallationINFOID:0000000001325728
NOTE:
 This section describes removal/installation procedure
of front timing chain case and timing chain related
parts without removing oil pan (upper) on the vehicle.
 When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain related
parts, and rear timing chain case in this order, and install in reverse order of removal. Refer to EM-64, "
Com-
ponent".
 Refer to EM-64, "
Component" for component parts location.
REMOVAL
1. Disconnect negative battery terminal. Refer to SC-4, "How to Handle Battery".
2. Remove engine cover with power tool. Refer to EM-19, "
Component".
3. Remove air cleaner case assembly. Refer to EM-17, "
Component".
4. Remove front and rear engine undercover with power tool.
5. Release the fuel pressure. Refer to EC-87, "
Fuel Pressure Check".
6. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
7. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
8. Separate engine harnesses removing their brackets from front timing chain case.
9. Remove drive belts. Refer to EM-15, "
Removal and Installation".
10. Remove intake manifold colle ctors (upper and lower). Refer to EM-19, "
Component".
11. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-27, "
On-Vehicle Inspection and Service".
12. Remove power steering oil pump bracket. Refer to PS-27, "
On-Vehicle Inspection and Service".
13. Remove alternator. Refer to SC-19, "
System Description".
14. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
15. Remove intake valve timing control covers.  Loosen mounting bolts in reverse order as shown in the figure.
 Use the seal cutter [SST: KV10111100 (J37228)] to cut liquidgasket for removal.
CAUTION:
Shaft is internally jointed wi th camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
SEM728G
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TIMING CHAINEM-65
< SERVICE INFORMATION > [VQ35DE]
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Removal and InstallationINFOID:0000000001325730
NOTE:
 This section describes procedures for removing/installing front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.
 To remove/install front timing chain case, timing chain, and its related parts without removing oil pan (upper),
refer to EM-54, "
Removal and Installation".
REMOVAL
1. Remove front tire.
2. Disconnect negative battery terminal.
3. Remove engine cover with power tool. Refer to EM-19, "
Component".
4. Remove air cleaner case assembly. Refer to EM-17, "
Component".
5. Remove front and rear engine undercover with power tool.
6. Release the fuel pressure. Refer to EC-87, "
Fuel Pressure Check".
7. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
8. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine oil on drive belts.
9. Remove engine harnesses.
10. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
Component".
11. Remove radiator cooling fan assembly. Refer to CO-20, "
Component".
12. Remove drive belts. Refer to EM-15, "
Removal and Installation".
13. Remove A/C compressor from bracket with piping c onnected, and temporarily secure it aside. Refer to
ATC-121, "
Component".
14. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-27, "
On-Vehicle Inspection and Service".
15. Remove power steering oil pump bracket. Refer to PS-27, "
On-Vehicle Inspection and Service".
16. Remove alternator. Refer to SC-19, "
System Description".
17. Remove water bypass hose, water hose clamp and id ler pulley bracket from front timing chain case.
18. Remove intake valve timing control covers.
10. Camshaft sprocket (INT) 11. Slack guide 12. Crankshaft sprocket
13. Timing chain tensioner (primary) 14. Intake valve timing control cover 15. Collared O-ring
16. O-ring 17. Chain tensioner cover 18. Intake valve timing control cover
19. Water hose clamp 20. Spacer 21. Idler pulley
22. Crankshaft pulley 23. Front oil seal 24. Idler pulley
25. A/C compressor bracket 26. Water pump cover 27. Bracket
28. Front timing chain case 29. Bracket 30. Rear timing chain case
31. O-ring 32. Tension guide 33. Water drain plug (front side)
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ENGINE ASSEMBLYEM-113
< SERVICE INFORMATION > [VQ35DE]
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At first, remove the engine and the transmission asse
mbly with front suspension member downward. Then
separate the engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-87, "Fuel Pressure Check".
2. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
3. Disconnect both battery terminals. Refer to SC-4, "
How to Handle Battery".
4. Remove the following parts:  Engine cover: Refer to EM-19, "
Component".
 Front road wheel and tires
 Front and rear engine undercover
 Front cross bar: Refer to FSU-16, "
Removal and Installation".
 Cowl top cover (right): Refer to EI-23, "
Component Parts Location".
 Air duct and air cleaner case assembly: EM-17, "
Component".
5. Discharge refrigerant from A/C circuit. Refer to ATC-120, "
HFC-134a (R-134a) Service Procedure".
6. Remove radiator hoses (upper and lower). Refer to CO-13, "
Component".
Engine Room
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect grounding cable (between vehicle to left bank cylinder head).
3. Disconnect battery positive cable harness at v ehicle side and temporarily fasten it on engine.
4. Disconnect A/C piping from A/C compressor, and tem porarily fasten it on vehicle with a rope. Refer to
ATC-120, "
HFC-134a (R-134a) Service Procedure".
5. Disconnect engine room harness connectors shown in the fig- ure.
6. Disconnect two body ground cables.
7. Disconnect brake booster vacuum hose.
8. Disconnect fuel feed hose (with damper) and EVAP hose. Refer to EM-45, "
Component".
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
9. Remove reservoir tank of power steering oil pump and piping from vehicle, and temporarily secure them
on engine. Refer to PS-27, "
On-Vehicle Inspection and Service".
CAUTION:
When temporarily securing, keep the reservo ir tank upright to avoid a fluid leak.
Passenger Room Side
Follow procedure below to disconnect engine room harne ss connectors at passenger room side, and tempo-
rarily secure them on engine.
1. Remove passenger-side kicking plate, dash side finisher, and glove box. Refer to EI-38, "
Component
Parts Location" and IP-10, "Component Parts Location".
SBIA0472E
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EM-118
< SERVICE INFORMATION >[VQ35DE]
ENGINE ASSEMBLY
At first, remove the engine, the transmission assembly
, the transfer assembly and the front final drive assem-
bly with front suspension member downward. Then separa te the engine, the transmission assembly, the trans-
fer and the front final drive assembly.
Preparation
1. Release fuel pressure. Refer to EC-87, "Fuel Pressure Check".
2. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
3. Disconnect both battery terminals. Refer to SC-4, "
How to Handle Battery".
4. Remove the following parts:  Engine cover: Refer to EM-19, "
Component".
 Front road wheel and tires
 Front and rear engine undercover
 Front cross bar: Refer to FSU-16, "
Removal and Installation".
 Cowl top cover (right): Refer to EI-23, "
Component Parts Location".
 Air duct and air cleaner case assembly: EM-17, "
Component".
5. Discharge refrigerant from A/C circuit. Refer to ATC-120, "
HFC-134a (R-134a) Service Procedure".
6. Remove radiator hoses (upper and lower). Refer to CO-13, "
Component".
Engine Room
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect grounding cable (between vehicle to left bank cylinder head).
3. Disconnect battery positive cable harness at v ehicle side and temporarily fasten it on engine.
4. Disconnect A/C piping from A/C compressor, and tem porarily fasten it on vehicle with a rope. Refer to
ATC-120, "
HFC-134a (R-134a) Service Procedure".
5. Disconnect engine room harness connectors shown in the fig- ure.
6. Disconnect two body ground cables.
7. Disconnect brake booster vacuum hose.
8. Disconnect fuel feed hose (with damper) and EVAP hose. Refer to EM-45, "
Component"
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
9. Remove reservoir tank of power steering oil pump and piping from vehicle, and temporarily secure them
on engine. Refer to PS-27, "
On-Vehicle Inspection and Service".
CAUTION:
When temporarily securing, keep the reservo ir tank upright to avoid a fluid leak.
Passenger Room Side
Follow procedure below to disconnect engine room har ness connectors at passenger room side, and tempo-
rarily secure them on engine.
1. Remove passenger-side kicking plate, das h side finisher, and glove box. Refer to EI-38, "
Component
Parts Location" and IP-10, "Component Parts Location".
SBIA0472E
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EM-176
< SERVICE INFORMATION >[VK45DE]
INTAKE MANIFOLD
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325775
REMOVAL
WARNING:
To avoid the danger of being scalded, never drai n the engine coolant when the engine is hot.
1. Remove engine cover with power tool.
2. Release fuel pressure. Refer to EC-665, "
Fuel Pressure Check".
3. Remove air duct (inlet), power duct, air cleaner case and air duct and resonator assembly. Refer to EM-
173, "Component".
4. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
 Perform this step when the engine is cold.
 Do not spill engine coolant on drive belts.
7. EVAP service port 8. EVAP tube 9. Vacuum hose
10. Vacuum hose 11. PCV hose 12. PCV tube
13. PCV hose 14. PCV hose 15. Water hose
16. EVAP hose 17. Water hose 18. Intake manifold adapter
19. Gasket 20. Electric throttle control actuator 21. Gasket
22. Gasket 23. Intake manifold (lower) 24. Vacuum hose
25. VIAS control solenoid valve 26. Vacuum hose 27. Vacuum hose
28. Vacuum tank 29. Vacuum hose 30. Engine cover bracket (LH)
31. Vacuum hose 32. Water hose 33. Gasket
34. Intake manifold (upper)
A. To centralized under-floor piping B. To rocker cover (right bank) C. To rocker cover (left bank)
D. To thermostat housing E. To air duct and resonator assembly F. To heater pipe
PBIC4553E
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EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-179
< SERVICE INFORMATION > [VK45DE]
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EXHAUST MANIFOLD AND THREE WAY CATALYST
ComponentINFOID:0000000001325776
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325777
REMOVAL
WARNING:
Perform the work, when the exhaust and cooling system h ave completely cooled down.
1. Remove engine cover with power tool. Refer to EM-169, "
Component".
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-173, "
Component".
4. Remove front cross bar. Refer to FSU-5, "
On-Vehicle Inspection and Service".
5. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
1. Air fuel ratio 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. Air fuel ratio 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
A. Protrusion for installation confirma-
tion.
: Above
PBIC4549E
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EM-180
< SERVICE INFORMATION >[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
6. Remove radiator. Refer to
CO-40, "Component".
7. Remove drive belts. Refer to EM-170, "
Component".
8. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 as follows:
a. Disconnect air fuel ratio sensor 1 and heated oxygen sensor 2 harness connectors.
b. Remove air fuel ratio sensor 1 and heated oxygen sensor 2 on both bank with heated oxy gen sensor wrench (SST).
CAUTION:
 Be careful not to damage air fuel ratio sensor 1 and heated oxygen sensor 2.
 Discard any air fuel ratio sen sor 1 and heated oxygen sen-
sor 2 which have been dropped 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, "
Checking Exhaust System".
10. Disconnect A/C piping from A/C compressor, then re move A/C compressor with power tool. Refer to AT C -
121, "Component".
11. Remove alternator and bracket. Refer to SC-19, "
System Description".
12. Remove exhaust front tube with power tool. Refer to EX-3, "
Checking Exhaust System".
13. Remove steering lower joint at power steering gear assembly side, and release steering lower shaft. Refer to PS-17, "
Removal and Installation".
14. Remove three way catalysts (right and left bank).
15. Remove exhaust manifold covers. (right and left bank)
PBIC2333E
PBIC2334E
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