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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1044 (Engine Mechanical (VQ40DE)) >> Removal And Installation >> Exhaust Manifold And Three Way Catalyst >> Removal and Installation (Three Way Catalyst) >> Removal

Removal and Installation (Three Way Catalyst): Removal

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the front wheel and tire. Refer to "ADJUSTMENT ".
  2. Remove mud guard and front fender protector. Refer to "REMOVAL AND INSTALLATION OF FRONT FENDER PROTECTOR ".
  3. Remove the exhaust manifold cover bolts.
  4. Remove the center exhaust tube, main muffler and front exhaust tube. Refer to "EXPLODED VIEW ".
  5. Disconnect the air fuel ratio sensor 1 harness connector.
  6. Remove the three way catalyst nuts and remove the three way catalyst.
  7. Remove the air fuel ratio sensor 1 using Tool, if necessary.

    Tool number: KV991J0050 (J-44626) 

    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.
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