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Thread: catalytic convertor dying?

  1. #1
    Been Around the Block Dune Crawler's Avatar
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    catalytic convertor dying?

    So I’ve recently gotten back into driving and working on my Jeep and I’ve noticed this kinda growling gargling sound from the cats when I put my pedal down. (Note both cats are extremely rusty)

    (Little background info) I have the exhaust right in front of the rear axle on a 2DR so maybe it could be the exhaust pipe not being long enough? Could this cause the cats to sound like that?


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  2. #2
    Meme King WJCO's Avatar
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    Hit them with a rubber mallet. If they're breaking apart inside, it will rattle likes rocks are inside. I've never seen one make a noise other than that.

    If they're plugged up, you'll have a loss of power and usually an engine light on.
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  3. #3
    Guy with a Red 2-Door cozdude's Avatar
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    Quote Originally Posted by WJCO View Post
    Hit them with a rubber mallet. If they're breaking apart inside, it will rattle likes rocks are inside. I've never seen one make a noise other than that.

    If they're plugged up, you'll have a loss of power and usually an engine light on.
    This^^^^ you can clearly tell if they are falling apart this way.
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  4. #4
    Been Around the Block Dune Crawler's Avatar
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    Quote Originally Posted by WJCO View Post
    Hit them with a rubber mallet. If they're breaking apart inside, it will rattle likes rocks are inside. I've never seen one make a noise other than that.

    If they're plugged up, you'll have a loss of power and usually an engine light on.
    I’ll try the mallet. If they’re plugged up is there a special way to unclog them? Or is replacing less of a headache?


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  5. #5
    Guy with a Red 2-Door cozdude's Avatar
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    Quote Originally Posted by Dune Crawler View Post
    I’ll try the mallet. If they’re plugged up is there a special way to unclog them? Or is replacing less of a headache?


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    No way to unclog, you need to replace
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  6. #6
    Nothing but a Thing Strodinator's Avatar
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    Quote Originally Posted by cozdude View Post
    No way to unclog, you need to replace
    *there is one way to maybe clean it. Most auto parts store so carry a product called cataclean. I've seen it work and I've seen it fail. Still doesn't hurt to try it as it cleans out the rest of your exhaust system.

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  7. #7
    Knows a Thing or Two BobNH's Avatar
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    If it is the cat, do some research. It is very likely covered 8 years/80000 miles.
    2008 Rubicon

  8. #8
    Guy with a Red 2-Door cozdude's Avatar
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    Quote Originally Posted by Strodinator View Post
    *there is one way to maybe clean it. Most auto parts store so carry a product called cataclean. I've seen it work and I've seen it fail. Still doesn't hurt to try it as it cleans out the rest of your exhaust system.

    Sent from my PH-1 using WAYALIFE mobile app
    “Snake oil”. It will usually work to help get you thru emissions tests but doesn’t last long.
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    October 16, 2013, wednesday early evening, east of the pacific ocean, selectee for truly random and boring Parking lot photo of the moment grand platinum prize winner!

    2011 JK
    EVO Bolt-on Coilovers, EVO 1/4 pounder w/ stinger, 37" Cooper STT Pros, PR44, and some EVO stuff

    Awaiting install-
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  9. #9
    Been Around the Block Dune Crawler's Avatar
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    Update*

    I hit it both cats with a mallet and no signs of a rock sound. I took off the exhaust before work just to see if that would change anything and the engine felt a little less sluggish, but still had the sound coming from the front.

    I also ran a diagnostic.

    The codes that popped up.
    P0174-system too lean
    P0455-I didn’t tighten down the cap last fill up.
    P0562-first week driven in about a year (I’ll get the battery tested and clean the connectors)
    P0706-trans range sensor (could Code P0562 cause this?)

    I cleared them so I’ll run another diagnostic tomorrow.



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  10. #10
    Nothing but a Thing Strodinator's Avatar
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    Quote Originally Posted by cozdude View Post
    “Snake oil”. It will usually work to help get you thru emissions tests but doesn’t last long.
    I've seen it last wiite a while however you're right most of that stuff is quick fixes

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