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Do it yourself catalytic converter? 2nd gen

Discussion in '2nd Gen. Tacomas (2005-2015)' started by joew94th, Jan 29, 2012.

  1. May 12, 2014 at 7:38 PM
    #21
    savedone

    savedone Well-Known Member

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  2. May 12, 2014 at 9:41 PM
    #22
    MarkH

    MarkH Well-Known Member

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    California emissions regs require that the Catalytic Converter be CARB (California Air Resources Board) Approved. All OEM Cats are automatically approved as the car was tested to comply with CA Regs before it was approved for sale, but pretty much all the aftermarket Cats do not have this approval and are illegal to sell or even ship into the state.

    Now that does not mean that you will fail your smog test for emissions reasons. But you could fail the visual inspection should the tester actually look closely at the Cat under the vehicle. Not likely on a car, but trucks and SUVs it is a little easier. I know a number of people that had friends buy them a new Cat out of state and ship it to them, none has ever failed a smog test. I have also never seen anyone look closely at the Cat, they just look to see it is there. And that includes the one time I had to go to the State Referee station for a retest.

    You should change the O2 sensors periodically as a failed O2 sensor can cause the engine to run rich which can damage the Cat.
     
    Last edited: May 12, 2014
  3. May 12, 2014 at 9:46 PM
    #23
    vbibi

    vbibi Well-Known Member

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    You must have a friend somewhere to have it delivered out there..... and then UPS them to CA.
     
  4. May 13, 2014 at 2:16 PM
    #24
    joew94th

    joew94th [OP] Member

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    I had to get it at the Toyota dealer. That's why it cost so much. California won't allow anything but OEM cats on vehicles. As for removal, the cat is welded to the exhaust manifold, so it all has to come off. The head bolts came off ok. The bolts on the rear of the cat where it bolts to the exhaust pipe (and 2nd cat) were a nightmare. Because of the heat and rust, I had to cut two of the bolts of with a air chisel. I got the new bolts from the dealer also.
     
  5. Oct 13, 2015 at 5:38 PM
    #25
    Bhwang

    Bhwang Well-Known Member

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    Working on it. Never Ending :)
    Trying to bring back an old thread here, but I seem to have the same problem but only with my driver side cat it sounds like a tin can and rattling, but only when it is less than 10 degrees out (in Canada), in the summer it makes no sounds at all, any ideas if this could be the cat ?
     
  6. Oct 13, 2015 at 7:15 PM
    #26
    RBaptist

    RBaptist Well-Known Member

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    I did mine last year on my 2007. I have the 2.7l prerunner. Toyota of Olathe Ks online had the Cat/O2/fuel mix sensors for $1350. My local dealer matched it. It was pretty easy to do - maybe 2 hrs of work? Spray the bolts with PB blaster and let it sit for 24 hrs. If you have an electric impact wrench (Ryobi is about 100 bucks) the bolts come off really easy. Shop wanted $2000 for mine (no O2 or air/fuel sensors. Save nearly 1K and do it yourself (and get the right parts).
     
  7. Oct 13, 2015 at 7:20 PM
    #27
    DukesTaco

    DukesTaco Well-Known Member

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    Got to love the nany state.
     
    thewarriordinghy likes this.
  8. Oct 14, 2015 at 7:37 AM
    #28
    Bhwang

    Bhwang Well-Known Member

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    Working on it. Never Ending :)
    So what your telling me is to find a good used set to install as the regular price is insane !

    Or option B is to just live with it as it's not hurting anyone and no codes are being thrown and it runs great !
     
  9. Oct 14, 2015 at 8:33 AM
    #29
    TacoRob08

    TacoRob08 Well-Known Member

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    Go with option B until it throws a code. Then try to clean it. The replaced it with aftermarket manifolds. Well that's my plan so far, my rattles in the winter too (New Brunswick, Canada)
     
  10. Oct 14, 2015 at 8:39 AM
    #30
    Bhwang

    Bhwang Well-Known Member

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    Working on it. Never Ending :)
    How would i go about cleaning it ?
     
  11. Oct 14, 2015 at 8:42 AM
    #31
    TacoRob08

    TacoRob08 Well-Known Member

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    AFE high tuck exhaust, OVTuned base 91
    Can try running a can of Seafoam through the system.
     
  12. Oct 14, 2015 at 8:43 AM
    #32
    Bhwang

    Bhwang Well-Known Member

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    Working on it. Never Ending :)
    I did that a few years ago and could do another run and smoke out the neighbourhood, always had good results wiht seafoam !!!!
     
  13. Oct 14, 2015 at 8:49 AM
    #33
    Bhwang

    Bhwang Well-Known Member

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    Working on it. Never Ending :)
    you have a 4.0 L engine too ?
     
  14. Oct 14, 2015 at 8:50 AM
    #34
    TacoRob08

    TacoRob08 Well-Known Member

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    AFE high tuck exhaust, OVTuned base 91
    Sure do
     
  15. Oct 14, 2015 at 9:12 AM
    #35
    127.0.0.1

    127.0.0.1 AKA ::1

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    anyone reading this

    unless you obviously have a blown or damaged cat and physically looked through it

    --suspect the sensors first, o2 sensors (ones behind the cat) all tend to go off between 120,000-170,000 miles

    I have a 4runner whose a/f sensor went at 130,000 (heater circuit malfunction), o2 at 136,000 (bad cat) and o2 again (bad cat) at 211,000

    I replaced sensors only. was not really a bad cat at all, just old worn sensors

    the dual CA cats are original and run fine, emissions is clean (tailpipe testing) , t'was only the sensors getting old

    236,000+ now, still runs clean no codes and toyota oem sensors [denso]

    sensors -will- always fail, the cats might actually last a long time
     
  16. Oct 14, 2015 at 9:25 AM
    #36
    SH7mi

    SH7mi YotaWerx Pro Authorized Tuner PA MD DE NJ

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    The cat converter should not go bad. If it is bad replace only the bad one, the other should last.
    Like 127.0.0.1 said, exhaust all other possible problems first.
     
    pretacomikev6 likes this.
  17. Jan 30, 2016 at 6:21 PM
    #37
    NBFJCruz

    NBFJCruz Well-Known Member

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    lifted, 285s, black out, Defiant lightbar, triple Hella 100w
  18. Feb 7, 2016 at 7:55 AM
    #38
    Tex-Tac

    Tex-Tac Well-Known Member

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    Installed Overhead Compass and Temperature Display along with outside temperature sensor and wiring; LED lights reverse backup; LED license plate lights; Added GTA Bluetooth Audio kit to stock radio for iphone audio; Spare tire steel braided air hose extension connection to rear bumper; Installed new headlights along with new bulbs PIAA H4 XTreme and for fog lights PIAA H10 XTreme bulbs. Installed new hood with "hood-scoop". Installed Predator Side Steps. Replaced front chrome grill with customized color matched (Desert Sand Mica) grill with added TOYOTA lettering (also in matched color), installed and secured tailgate anti-theft devices. Also installed a new external TPMS monitor for all 4 tires.
    Sub'd
     
  19. Feb 7, 2016 at 9:10 AM
    #39
    YotaDriver631

    YotaDriver631 Well-Known Member

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    How many miles? Government mandated emissions 8years/82,000 miles warranty?
     

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