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FRONT (Bank 2)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If the warm up TWC is damaged internally, inspect the under floor TWC for debris.
  1. Remove the engine cover (see step 6 under ENGINE REMOVAL ).
  2. Remove the No. 5 ignition coil and the ignition coil heat insulator.
  3. Remove the front A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ) and the front secondary HO2S (Sensor 2) (see SECONDARY HO2S REPLACEMENT ).
  4. Remove the exhaust pipe A mounting nuts (front WU-TWC side) (see EXHAUST PIPE AND MUFFLER REPLACEMENT ).
  5. Remove the EGR pipe (see EGR VALVE REPLACEMENT ).
  6. Remove the A/C condenser fan assembly (see RADIATOR AND FAN REPLACEMENT ).
    NOTE: Place an appropriate size piece of cardboard in front of the radiator. The cardboard protects the radiator from damage when removing the warm up TWC.
  7. Remove the front WU-TWC bracket, and carefully remove the front WU-TWC.
    Fig 1: Front WU-TWC Related Replacement Components With Torque Specifications
    G08052617Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Carefully install the front WU-TWC with a new gasket and new self-locking nuts. Tighten the nuts in a crisscross pattern in two or three steps.
  9. Install the parts in the reverse order of removal.
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