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2443. P0420 p0430.

Discussion in '4th Gen 4Runners (2003-2009)' started by 8932jorge, Oct 28, 2024.

  1. Oct 28, 2024 at 9:12 AM
    #1
    8932jorge

    #1
    8932jorge [OP] New Member

    Joined:
    Oct 28, 2024
    Member:
    #43610
    Messages:
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    Gender:
    Male
    First Name:
    Jorge
    I have a question. I have a 4runner 2005 v8 4wd. Have all the codes for secondary air injection and pump. And cats codes. I replaced all 2 pumps (stuck closed) the air pump and another pump so all the system is new oem. And the codes are clear for those issues but p0420 p0430 are still coming back. Cats look physically good, I put a camera inside, due to the bad pumps I'm assuming the car was running rich for quite some time. Now. The question is are the cats really bad?
    1:New spark plugs
    2: New o2 sensors (4)
    3: New secondary air injection system (oem)
    4 no air leaks
    DonI have to replace all the cats(4) or only the one are being monitored by the computer? Is about $1500 replacing just the 2 on the front and about $3000 replacing all. I'll do the work. That's just for parts. California here.
     
    8932jorge, Oct 28, 2024
    #1
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