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Installing Catalytic Converters a Pain? (P0430 code)

This is a discussion on Installing Catalytic Converters a Pain? (P0430 code) within the General Help forums, part of the LSx Technical Help Section category; Got a new code today, P0430. Looking around the site it appears that its an indicator that the passenger side ...

  1. #1
    Member Thewilldog's Avatar
    Join Date
    Nov 2005
    Jacksonville, FL

    2001 Z28

    Installing Catalytic Converters a Pain? (P0430 code)

    Got a new code today, P0430. Looking around the site it appears that its an indicator that the passenger side O2 sensor or catalytic converter is on it's way out. Not a shocking development; the car is 10+ years old and has 173k miles. However, I didn't see anyone talking about what they've done to replace them. All the threads appear to be how to remove them and not get caught. I realize that the primary reason is probably that people would rather spend money on something that improves performance rather than detracts from it. However, I'm curious as to how difficult it would be to actually replace them. I'm also not sure why there's such a wide variance in the prices for these things online. I've seen replacements priced between $50 and $300 online for what looks like the same part. Can someone fill me in as to what I would be getting into if I decided to do this myself and what exactly I'd need to accomplish it?

    My technical background isn't very broad. I've installed a stereo system, about a dozen window motors (slight exaggeration), lots of interior trim and lamps, two sets of brake pads and rotors, both AIR check valves, fuel filter, serpentine belts, and changed rear gear fluid on my own. The rest I've paid someone else to do. I've never attempted to work on the exhaust system and I don't have a lift or a pit, just a couple of wheel ramps.

  2. #2
    expensive tires az gt eater's Avatar
    Join Date
    Mar 2006

    04 2500 4x4 crew cab

    Everbody I have talked to has had problems with aftermarket cats. Only lasting a little while, then going out. You need jack stands, a jack, and plenty of PB blaster. I am pretty sure it is a 14 mm with extensions and you got it.

  3. #3
    Junior Member whitetrashbird's Avatar
    Join Date
    Dec 2010

    02 Firebird Transam

    You will need plenty of PB and a stout impact wrench. It's pretty much a case of unbolting the old part and bolting the new part on but those bolts to the manifold are going to be really frozen up. Also, it's not going to make much sense to replace just the one side since they're both the same age. If you go that route might as well plan on replacing them both.


  4. #4
    Paid off 1/27/14 cammed goat's Avatar
    Join Date
    Jan 2009
    Paterson/Ridgewood, NJ

    Phantom Black Metallic
    2004 GTO M6

    ^^This. You could probably find a pair of high-flow units online for cheap and pay for the installation. I am biased to Mangaflow as I had one on my previous car.
    Last edited by cammed goat; 12-21-2011 at 02:09 PM.

  5. #5
    Senior Member Too Fast's Avatar
    Join Date
    Nov 2006

    2000 WS6 6spd Hooker LT

    ^^^What Rich says is true. But, you could wait until the drivers side sets the code, before you replace both. Some people don't know that the catalyst code(s) won't set until the PCM proves out the O2 sensors. Usually the code won't set for a blockage problem, but only for a true converter conversion issue. (sorry, forgot how to spell ''efficincy''.......god I feel stupid!)

  6. #6
    Drop&Drag matt evans's Avatar
    Join Date
    Jan 2010
    clyde nc

    02 Z28 and 00 SS

    spend the money buy long tubes and have the cats deleted, be cheaper in the long run.

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