Nissan Pathfinder (2008 year). Manual - part 358

 

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Nissan Pathfinder (2008 year). Manual - part 358

 

 

INTAKE MANIFOLD COLLECTOR

EM-27

< ON-VEHICLE REPAIR >

[VQ40DE]

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d.

Loosen bolts in reverse order as shown.

CAUTION:

• Handle carefully to avoid any shock to electric throttle

control actuator.

• Do not disassemble.

4.

Remove the following parts:
• Vacuum hose (to brake booster)
• PCV hose

5.

Loosen bolts in reverse order as shown to remove intake mani-
fold collector support.

6.

Disconnect EVAP hoses and harness connector from EVAP canister purge volume control solenoid valve.

7.

Remove EVAP canister purge volume control solenoid valve.

8.

Remove VIAS control solenoid valve and vacuum tank.
• Add mating marks as necessary for easier installation. 

9.

Loosen nuts and bolts in reverse order as shown with power
tool, and remove intake manifold collector.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSTALLATION

Installation is in the reverse order of removal. Note the following:

Intake Manifold Collector

• If stud bolts were removed from intake manifold, install them and tighten to the specified torque.
• Tighten nuts and bolts in numerical order as shown.

PBIC2875E

PBIC2876E

PBIC2877E

Intake manifold collector 
bolts and nuts

: 11.0 N·m (1.1 kg-m, 8 ft-lb)

Stud bolts

: 6.9 N·m (7.0kg-m, 61 in-lb)

PBIC2877E

EM-28

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[VQ40DE]

INTAKE MANIFOLD COLLECTOR

Electric Throttle Control Actuator

• Tighten bolts in numerical order as shown.
• Perform the “Throttle Valve Closed Position Learning” when har-

ness connector of electric throttle control actuator is disconnected.
Refer to 

EC-26, "Throttle Valve Closed Position Learning"

.

• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed

Position Learning” when electric throttle control actuator is
replaced. Refer to 

EC-26, "Idle Air Volume Learning"

.

PBIC2875E

INTAKE MANIFOLD

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INTAKE MANIFOLD

Removal and Installation

INFOID:0000000001281978

REMOVAL

1.

Release fuel pressure. Refer to 

EC-481, "Fuel Pressure Check"

.

2.

Remove intake manifold collector. Refer to 

EM-26, "Removal and Installation"

.

3.

Remove fuel tube and fuel injector assembly. Refer to 

EM-47, "Removal and Installation"

.

4.

Loosen nuts and bolts with power tool in reverse order as shown
to remove intake manifold.

5.

Remove gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of the intake manifold mating surface

with straightedge and feeler gauge.

• If it exceeds the limit, replace intake manifold.

1.

Intake manifold

2.

Gasket

PBIC2878E

PBIC2879E

Limit

: 0.1 mm (0.004 in)

PBIC0870E

EM-30

< ON-VEHICLE REPAIR >

[VQ40DE]

INTAKE MANIFOLD

INSTALLATION

Installation is in the reverse order of removal. Note the following:

Intake Manifold

• If stud bolts were removed from cylinder head, install them and tighten to the specified torque.

• Tighten all nuts and bolts to the specified torque in two or more

steps in numerical order as shown.

Intake manifold studs

: 11.0 N·m (1.1kg-m, 8 ft-lb)

Intake manifold bolt and nuts

1st step

: 7.4 N·m (0.75 kg-m, 65 in-lb)

2nd step and after

: 29.0 N·m (3.0 kg-m, 21 ft-lb)

PBIC2879E

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-31

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EXHAUST MANIFOLD AND THREE WAY CATALYST

Removal and Installation

INFOID:0000000001281979

REMOVAL (LH)

WARNING:

Perform the work when the exhaust and cooling system have cooled sufficiently.
1.

Remove air cleaner case and air duct. Refer to 

EM-25, "Removal and Installation"

.

2.

Remove engine undercover using power tool.

3.

Disconnect harness connector and remove LH and RH heated
oxygen sensor 2 using Tool.

CAUTION:

• Be careful not to damage heated oxygen sensor 2.
• Discard any heated oxygen sensor 2 which has been

dropped from a height of more than 0.5 m (19.70 in) onto a
hard surface such as a concrete floor; replace with a new
sensor.

4.

Remove center exhaust tube, main muffler and left front exhaust tube. Refer to 

EX-5, "Removal and

Installation"

.

5.

Remove exhaust manifold cover (LH).

1.

Exhaust manifold cover (RH)

2.

Exhaust manifold (RH)

3.

Gasket

4.

Exhaust manifold (LH)

5.

Exhaust manifold cover (LH)

PBIC2880E

Tool number

: KV10114400 (J-38365)

LBIA0446E

EM-32

< ON-VEHICLE REPAIR >

[VQ40DE]

EXHAUST MANIFOLD AND THREE WAY CATALYST

6.

Disconnect harness connector and remove air fuel ratio sensor
1 (LH) using Tool.

CAUTION:

• Be careful not to damage air fuel ratio sensor 1.
• Discard any air fuel ratio sensor 1 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
sensor.

7.

Remove three way catalyst LH).

8.

Loosen nuts with power tool in reverse order as shown.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.

9.

Remove gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of the exhaust manifold mating sur-

face with straightedge and feeler gauge.

• If it exceeds the limit, replace exhaust manifold.

INSTALLATION (LH)

Installation of the remaining components is in the reverse order of removal. Note the following:

Exhaust Manifold Gasket

Tool number

: KV991J0050 (J-44626)

LBIA0447E

PBIC2881E

Limit

: 0.3 mm (0.012 in)

PBIC1096E

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-33

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Install the exhaust manifold gaskets in direction as shown.

Exhaust Manifold

• If stud bolts were removed, install them and tighten to the specified torque.

• Install exhaust manifold and tighten nuts in numerical order as

shown.

CAUTION:

Use new exhaust manifold nuts for installation.
NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7
and 8 show second step.

Heated Oxygen Sensor

CAUTION:

• Before installing a new air fuel ratio sensor 1 and heated oxygen sensor 2, clean exhaust system

threads using oxygen sensor thread cleaner and apply anti-seize lubricant.

• Do not over torque air fuel ratio sensor 1 and heated oxygen sensor 2. Doing so may cause damage

to air fuel ratio sensor 1 and heated oxygen sensor 2, resulting in the “MIL” coming on.

REMOVAL (RH)

1.

Remove engine assembly. Refer to 

EM-103, "Removal and Installation"

.

PBIC2882E

Exhaust manifold stud torque

: 14.7 N·m (1.5 kg-m, 11 ft-lb)

PBIC2881E

Tool number

: —   (J-43897-12) 

: —   (J-43897 18)

EM-34

< ON-VEHICLE REPAIR >

[VQ40DE]

EXHAUST MANIFOLD AND THREE WAY CATALYST

2.

Loosen nuts with power tool in reverse order as shown.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.

3.

Remove gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of the exhaust manifold mating sur-

face with straightedge and feeler gauge.

• If it exceeds the limit, replace exhaust manifold.

INSTALLATION (RH)

Installation of the remaining components is in the reverse order of removal. Note the following:

Exhaust Manifold Gasket

Install the exhaust manifold gaskets in direction as shown.

Exhaust Manifold

• If stud bolts were removed, install them and tighten to the specified torque.

PBIC2881E

Limit

: 0.3 mm (0.012 in)

PBIC1096E

PBIC2882E

 

 

 

 

 

 

 

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