Nissan Pathfinder. Manual - part 547

INTAKE MANIFOLD COLLECTOR

EM-27

< REMOVAL AND INSTALLATION >

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3. Remove engine room cover. Refer to 

EM-23, "Removal and Installation"

.

4. Remove the air cleaner case (upper), air cleaner case (lower), and air duct and resonator assembly. Refer

to 

EM-24, "Removal and Installation"

.

5. Disconnect the power brake booster vacuum hose.
6. Disconnect engine mount control valve solenoid harness connector. Refer to 

EC-21, "Electronic Con-

trolled Engine Mount"

7. Disconnect VIAS control solenoid valve harness connector. Refer to 

EC-27, "VIAS Control Solenoid Valve

1 and 2"

8. Disconnect the PCV hose.
9. Disconnect the electric throttle control actuator electrical harness connector.
10. Disconnect the EVAP canister purge volume control solenoid valve hose.
11. Remove the electric throttle control actuator bolts and remove

the electric throttle control actuator and position aside. Loosen-

ing is done in reverse order of torquing.

CAUTION:

• Handle carefully to avoid any shock to the electric throttle

control actuator.

• Do not disassemble.

12. Remove the VIAS control solenoid valve as necessary.
13. Remove the EVAP canister purge volume control solenoid valve.
14. Loosen the intake manifold collector bolts and remove the intake

manifold collector and gasket. Loosening is done in reverse

order of torquing.

INSTALLATION

Installation is in the reverse order of removal.

• Tighten intake manifold collector bolts in the order as shown.

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< REMOVAL AND INSTALLATION >

INTAKE MANIFOLD COLLECTOR

• Tighten electric throttle control actuator bolts in the order shown.

NOTE:

After installation, re-calibrate the electric throttle control actuator as follows:

1. Perform the 

″Throttle Valve Closed Position Learning″ when harness connector of the electric throttle con-

trol actuator is disconnected. Refer to 

EC-142, "Work Procedure"

.

2. Perform the 

″Idle Air Volume Learning″ when the electric throttle control actuator is replaced. Refer to 

EC-

143, "Work Procedure"

.

3. Perform the 

″Accelerator Pedal Released Position Learning″ when the electric throttle control actuator is

replaced. Refer to 

EC-141, "Work Procedure"

.

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INTAKE MANIFOLD

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< REMOVAL AND INSTALLATION >

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INTAKE MANIFOLD

Exploded View

INFOID:0000000009177902

Removal and Installation

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REMOVAL

WARNING:

Do not drain the engine coolant when the engine is hot to avoid the danger of being scalded.
1. Remove the fuel injectors and fuel tube as a unit from the intake manifold. Refer to 

EM-47, "Removal and

Installation"

. 

2. Remove the engine mount control valve solenoid vacuum hose. 
3. Remove VIAS control solenoid valve vacuum hoses. 
4. Remove the EVAP canister purge volume control solenoid valve vacuum pipes and hoses. 
5. Remove the vacuum gallery.
6. Remove the electric throttle control actuator coolant hoses.

7. Remove the intake manifold and gaskets. Loosening is done in

reverse order of torquing.

CAUTION:

Cover the engine openings to avoid the entry of foreign

materials.

1.

Intake manifold

2.

Intake manifold gasket

A. Refer to INSTALLATION

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< REMOVAL AND INSTALLATION >

INTAKE MANIFOLD

INSPECTION AFTER REMOVAL

Surface Distortion

• Using straightedge and feeler gauge, inspect the surface distortion

of the intake manifold. Refer to 

EM-134, "Intake Manifold"

.

INSTALLATION

Installation is in the reverse order of removal. Follow the procedure below for specific tightening sequences

and procedures.

CAUTION:

Install the gaskets with the painted surface facing the intake manifold side.

• Install intake manifold studs, (if removed) and tighten to specification. 

• Install intake manifold bolts in two steps in the numerical order as

shown.

INSPECTION AFTER INSTALLATION

Make sure there are no fuel leaks at connections as follows:
1. Apply fuel pressure to fuel lines by turning ignition switch ON with engine stopped. Then check for fuel

leaks at connections. 

2. Start the engine and rev it up and check for fuel leaks at connections.

WARNING:

Do not touch engine immediately after stopping, as engine is extremely hot.

NOTE:

Use mirrors for checking on connections out of the direct line of sight.

Standard

: 0.1 mm (0.004 in)

WBIA0052E

Intake manifold studs

: 10.8 N·m (1.1 kg-m, 8 ft-lb)

Step 1

: 7.4 N·m (0.75 kg-m, 65 in-lb)

Step 2

: 25.5 N·m (2.6 kg-m, 19 ft-lb)

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