Rogue 2WD L4-2.5L (QR25DE) (2008)
NOTE: This figure shows air fuel ratio sensor 1 as an example.
2. Remove exhaust front tube.
3. Remove alternator.
4. Remove exhaust manifold cover (upper).
5. Loosen nuts in reverse order as shown in the figure to remove exhaust manifold and three way catalyst assembly.
<---: Engine front
NOTE: Disregard No. 6 to 10 when loosening.
6. Remove gasket.
CAUTION: Cover engine openings to avoid entry of foreign materials.
7. Remove exhaust manifold cover (lower) and three way catalyst cover from exhaust manifold and three way catalyst assembly.
Installation
Note the following, and install in the reverse order of removal.
EXHAUST MANIFOLD
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If stud bolts were removed, install them and tighten to the specified torque below.
Torque: 14.7 Nm (1.5 kg-m, 11 ft-lb)
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Tighten nuts in numerical order as shown in the figure.
<---: Engine front
NOTE: No. 6 to 10 mean double tightening of bolts No. 1 and 5.
HEATED OXYGEN SENSOR
CAUTION:
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Before installing a new air fuel ratio sensor 1 and heated oxygen sensor 2, clean exhaust system threads using heated oxygen sensor
thread cleaner and apply anti-seize lubricant (commercial service tool: J-43897-18 or J-43897-12).
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Never over torque the air fuel ratio sensor 1 and heated oxygen sensor 2. Doing so may cause damage to the air fuel ratio sensor 1 and
heated oxygen sensor 2, resulting in the "MIL" coming on.
Inspection
INSPECTION AFTER REMOVAL