2003 NISSAN TEANA sensor

PREPARATION
EM-123
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EM03470000
Piston ring compressorInstalling piston assembly into cylinder bore
ST16610001
Pilot bushing pullerRemoving pilot converter
KV10111100
Seal cutterRemoving oil pan (lower and upper), front
and rear timing chain case, etc.
WS39930000
Tube presserPressing the tube of liquid gasket
KV10109300
Pulley holderRemoving and installing crankshaft pulley
a: 68 mm (2.68 in)
b: 8 mm (0.31 in) dia.
KV10112100
Angle wrenchTightening bolts for bearing cap, cylinder
head, etc. in angle
KV10117100
Heated oxygen sensor wrenchLoosening or tightening heated oxygen
sensor 1
For 22 mm (0.87 in) width hexagon nut Tool number
Tool nameDescription
NT044
NT045
NT046
NT052
NT628
NT014
NT379

EM-124
[VQ]
PREPARATION

Commercial Service ToolsBBS004VJ
KV10114400
Heated oxygen sensor wrenchLoosening or tightening heated oxygen
sensor 2
a: 22 mm (0.87 in)
Quick connector release Removing fuel tube quick connectors in
engine room
(Available in SEC. 164 of PARTS CATALOG:
Part No. 16441 6N210) Tool number
Tool nameDescription
NT636
PBIC0198E
Tool number
Tool nameDescription
Manual lift table caddy Removing and installing engine
Cylinder head bolt wrench Loosening and tightening cylinder head bolt,
and used with angle wrench [SST:
KV10112100]
a: 13 (0.51) dia.
b: 12 (0.47)
c: 10 (0.39)
Unit: mm (in)
Spark plug wrench Removing and installing spark plug
Valve seat cutter set Finishing valve seat dimensions
Piston ring expander Removing and installing piston ring
ZZA1210D
NT583
NT047
NT048
NT030

PREPARATION
EM-125
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Valve guide drift Removing and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
Valve guide reamer (1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
Oxygen sensor thread cleaner Reconditioning the exhaust system threads
before installing a new heated oxygen sensor
(Use with anti-seize lubricant shown below.)
a = 18 mm (0.71 in) dia. for zirconia heated
oxygen sensor
b = 12 mm (0.47 in) dia. for titania heated
oxygen sensor
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads Tool number
Tool nameDescription
NT015
NT016
AEM488
AEM489

AIR CLEANER AND AIR DUCT
EM-131
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AIR CLEANER AND AIR DUCTPFP:16500
Removal and InstallationBBS004VP
REMOVAL
1. Remove air duct (inlet).
2. Disconnect harness connector from mass air flow sensor.
3. Disconnect PCV hose.
4. Remove air cleaner cases (upper and lower) with mass air flow sensor and air duct assembly disconnect-
ing their joints.

Add mating marks as necessary for easier installation.
5. Remove mass air flow sensor from air cleaner case (upper), as necessary.
CAUTION:
Handle mass air flow sensor with following cares.

Do not shock it.

Do not disassemble it.

Do not touch its sensor.
6. Remove resonator, removing left side fender protector (front), as necessary. Refer to EI-23, "
FENDER
PROTECTOR" .
1. Air cleaner case (lower) 2. Air cleaner filter 3. Air cleaner case (upper)
4. Air duct assembly 5. Harness bracket 6. Mass air flow sensor
7. O-ring 8. PCV hose 9. Air duct (inlet)
10. Clip 11. Resonator 12. Bracket
13. Grommet 14. Bracket
PBIC2451E

EM-134
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INTAKE MANIFOLD COLLECTOR


Refer to GI-10, "Components" for symbol marks in the figure.
NOTE:
The figure illustrates VQ35DE as an example. Each part form of VQ23DE is different from VQ35DE for differ-
ence of port diameter and so forth. Only portions which structures (components) differ are illustrated.
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine coolant when engine is hot.
NOTE:
Show VQ35DE as an example unless the figure includes specification.
1. Remove engine cover.
CAUTION:
Be careful not to damage or scratch engine cover.
2. Remove air cleaner case (upper) with mass air flow sensor and air duct assembly. Refer to EM-131, "
AIR
CLEANER AND AIR DUCT" .
3. Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
4. Remove electric throttle control actuator as follows:
a. Disconnect harness connector.
b. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
CAUTION:

Handle carefully to avoid any shock to electric throttle
control actuator.

Do not disassemble.
5. Disconnect water hoses from intake manifold collector (upper).

When engine coolant is not drained from radiator, attach plug to water hoses to prevent engine coolant
leakage.
PBIC2454E
KBIA2007J

EM-140
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EXHAUST MANIFOLD AND THREE WAY CATALYST

EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationBBS004VT
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
1. Drain engine coolant. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Remove the following:

Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .

Air duct (inlet), air cleaner cases (upper and lower) with mass air flow sensor and air duct assembly;
Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .

Undercover

Radiator and radiator cooling fan assembly; Refer to CO-37, "RADIATOR" .
1. Heated oxygen sensor 1 (bank 1) 2. Exhaust manifold cover (right bank) 3. Exhaust manifold (right bank)
4. Ring gasket 5. Three way catalyst (right bank) 6.Three way catalyst support (right
bank)
7. Heated oxygen sensor 2 (bank 1) 8. Gasket 9. Gasket
10. Heated oxygen sensor 1 (bank 2) 11. Three way catalyst (left bank) 12. Three way catalyst cover
13. Three way catalyst cover 14. Three way catalyst cover 15.Three way catalyst support (left
bank)
16. Heated oxygen sensor 2 (bank 2) 17. Exhaust manifold cover (left bank) 18. Exhaust manifold (left bank)
PBIC2461E

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-141
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3. Remove exhaust front tube mounting bracket and then remove exhaust front tube. Refer to EX-2,
"EXHAUST SYSTEM" .
4. Remove heat insulator.
5. Disconnect harness connector and remove heated oxygen sen-
sor 1 on both banks with heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor 1.
CAUTION:

Be careful not to damage heated oxygen sensor 1.

Discard any heated oxygen sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
NOTE:
Figure is shown as an example of left bank.
6. Disconnect harness connector and remove heated oxygen sen-
sor 2 on both banks with heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each heated oxy-
gen sensor 2.
CAUTION:

Be careful not to damage heated oxygen sensor 2.

Discard any heated oxygen sensor 2 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
7. Remove exhaust manifold covers (right and left banks) and three way catalyst covers.
8. Remove mounting bolts in the reverse order as shown in the fig-
ure to remove three way catalyst supports (right and left banks).
9. Remove three way catalysts (right and left banks) by loosening bolts first and then removing nuts.
CAUTION:
Handle carefully to avoid any shock to three way catalyst.
PBIC2503E
PBIC2462E
PBIC2544E
PBIC2463E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Exhaust Manifold

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

Tighten mounting nuts in numerical order as shown in the figure.
Three Way Catalyst Supports
1. Temporarily tighten three way catalyst support mounting bolts.
2. Tighten three way catalyst support mounting bolts to specified
torque in numerical order as shown in the figure.
Heated Oxygen Sensor

Install heated oxygen sensors in the original position.

Install referring the following if the installation positions cannot
be identified.
*: Heated oxygen sensor 2 are same parts both bank 1 and
bank 2.
CAUTION:

Before installing new heated oxygen sensor, clean exhaust
system threads using heated oxygen sensor thread cleaner (commercial service tool) and apply
anti-seize lubricant (commercial service tool). : 15.4 N·m (1.6 kg-m, 11 ft-lb)
PBIC2464E
PBIC2463E
Glass tube color
Heated oxygen sensor 1 (bank 1) : Green
Heated oxygen sensor 1 (bank 2) : Black
Heated oxygen sensor 2* : White
PBIC2652E