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Natural gas smell?

Discussion in '1st Gen. Tacomas (1995-2004)' started by fouillard13, Jan 1, 2016.

  1. Jan 1, 2016 at 7:33 PM
    #1
    fouillard13

    fouillard13 [OP] Well-Known Member

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    lately I smell natural gas/ propane smell in my truck when in 4wd. Super wierd. Any ideas? Also my engine light is on for catalytic effeciency
     
  2. Jan 1, 2016 at 7:44 PM
    #2
    Conumdrum

    Conumdrum Well-Known Member

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    Well looks like your cats are bad.
     
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  3. Jan 1, 2016 at 8:03 PM
    #3
    fouillard13

    fouillard13 [OP] Well-Known Member

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    Is that a symptom?
     
  4. Jan 1, 2016 at 8:05 PM
    #4
    pofarm

    pofarm Well-Known Member

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    Yeah. Cat(s) are bad.
     
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  5. Jan 1, 2016 at 8:05 PM
    #5
    fouillard13

    fouillard13 [OP] Well-Known Member

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  6. Jan 1, 2016 at 8:06 PM
    #6
    o0oSHADOWo0o

    o0oSHADOWo0o Just lurking in the darkness

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    Just a few LEDs...
    upload_2016-1-1_23-5-58.jpg
     
  7. Jan 1, 2016 at 8:06 PM
    #7
    pofarm

    pofarm Well-Known Member

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    If one is bad the other probably isn't far behind... May as well replace both.
     
  8. Jan 1, 2016 at 8:07 PM
    #8
    pofarm

    pofarm Well-Known Member

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    Bwahahaha!
     
  9. Jan 1, 2016 at 8:16 PM
    #9
    fouillard13

    fouillard13 [OP] Well-Known Member

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    Dang they are expensive! And I don't believe you can do a cat delete without it sounds stupid or sending codes
     
  10. Jan 1, 2016 at 8:18 PM
    #10
    fouillard13

    fouillard13 [OP] Well-Known Member

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    Anyone heard of this brand?

    image.jpg
     
  11. Jan 1, 2016 at 9:15 PM
    #11
    nagorb

    nagorb Should be a dang perma mod

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    From the bit of reading I've done it seems aftermarket cats are hit and miss.
     
  12. Jan 1, 2016 at 9:33 PM
    #12
    patacoman2001

    patacoman2001 Member

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    Natural gas smell sounds like transfer case is overheating.
    Check the fluid level in your transfer case.
    If it was your cats you would still smell it in 2WD.
     
    fouillard13 [OP] likes this.
  13. Jan 1, 2016 at 10:24 PM
    #13
    Caligula

    Caligula It's the COVFEFE

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    hahahaha BAD KITTY!
     
  14. Jan 2, 2016 at 12:31 AM
    #14
    Caligula

    Caligula It's the COVFEFE

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    @fouillard13 , check out this thread:
    https://www.tacomaworld.com/threads/addressing-some-common-misnomers-of-the-p0420-code.396763/

    You should find out why your car is producing this smell before spending money to replace them. It may have gone bad, but you need to find out why, probably from the engine running rich.

    I read the information in that link, and it is bullshit. Your catalytic has NOTHING to do with influencing the way your engine performs. The ONLY purpose of the catalytic is to change the chemical makeup of the exhaust leaving the engine to contain less hazardous chemicals.

    The way your engine performs will affect how well the catalytic does its job. This is the reason i wrote the above thread, so many people on here dont understand what the O2 sensors and catalytic converter do.
     
    Last edited: Jan 2, 2016
  15. Jan 2, 2016 at 12:47 AM
    #15
    koditten

    koditten Well-Known Member

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    Quick question? Have you had a check engine light lit for a real long time? This is one of the main reason the CAT's go bad. If not then get bad cat idea out of your head. Bad catalytic converters smell more like a trash fire than natural gas.

    Gear lube smells more like natural gas than a bad cat ever will. Look around to see if you have a leak on the front differential.
     
  16. Jan 2, 2016 at 12:56 AM
    #16
    Caligula

    Caligula It's the COVFEFE

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    Good observation.

    You think he might be running without any fluid?
     
  17. Jan 2, 2016 at 1:00 AM
    #17
    koditten

    koditten Well-Known Member

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    Reserected from the dead.
    I know its pretty easy to go to the 'net and ask a question, but sometimes you just have to get down and dirty to find the answer yourself.

    OP, have you crawled under the truck? Let us know what you find. There is a lot of knowledge on this site, but we still require some help to help you.
     
  18. Jan 2, 2016 at 1:13 AM
    #18
    pofarm

    pofarm Well-Known Member

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  19. Jan 2, 2016 at 1:37 AM
    #19
    Caligula

    Caligula It's the COVFEFE

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    @pofarm That is not the result of ANYTHING to do with your catalytic. Your engine was running so poorly that it fouled the catalytic. If im wrong, then tell us how your catalytic caused your engine to pass oil or unburnt fuel into the exhaust. Correlation is not causation.

    Please, I do this for a living, you dont understand the way these systems function.
     
    Last edited: Jan 2, 2016
  20. Jan 2, 2016 at 2:00 AM
    #20
    koditten

    koditten Well-Known Member

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    Cali wins the cigar on this one. The engine killed the cat. The cat can't kill the engine.
     

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