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Natural gas/propane smell?

Discussion in '1st Gen. Tacomas (1995-2004)' started by anthony250f, Jun 26, 2016.

  1. Jun 26, 2016 at 7:15 PM
    #1
    anthony250f

    anthony250f [OP] Well-Known Member

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    recently I have been smelling propane type smell inside my truck. It is not continuous. I smell it for a minute then nothing for 30 mins or so. I thought maybe it was only when I was going up a hill but I have smelled it at other times too.

    Any ideas??
     
  2. Jun 26, 2016 at 7:42 PM
    #2
    FirstGen Jer

    FirstGen Jer Well-Known Member

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    Catalytic converter?
     
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  3. Jun 26, 2016 at 7:44 PM
    #3
    anthony250f

    anthony250f [OP] Well-Known Member

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    That's what I was thinking too. How would you even test that? It has a magnaflow cat I think
     
  4. Jun 26, 2016 at 7:51 PM
    #4
    FirstGen Jer

    FirstGen Jer Well-Known Member

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    Pulled this from another thread I was reading on...


    I tested my Cat with an infrared thermometer. From what I understand, while driving a vehicle that issufficiently warmed up, a healthy catalytic converter's OUTLET should read much hotter than its INLET. For example, on a healthy Cat you might see the temperature readings of exhaust going IN at 400 degrees and come out the other side at 550 degrees (these are EXAMPLE numbers only!!!) So I go for a 30 minute drive, then pull over and take some temp readings. On mine, the temp readings on the outlet side are consistently the same or lower than the inlet....which is one indication there is a problem with the cat.

    My next Cat check included hooking my real time scanner up and observing the O2 Bank1 Sensor1 and Bank1 Sensor2 voltage output while driving. Here's my scanner:
    http://www.amazon.com/gp/product/B005NLQAHS?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00

    It's my understanding that the inlet O2 sensor should fluctuate quite a bit (between 0 and 1) as its checking fuel trim, whereas the outlet sensor should be more steady. In my case, they both fluctuated a lot...almost in sync.

    After doing my own DIY tests, I decided to take the vehicle in. I dropped it off at my mechanic this afternoon and simply told him my check engine light was on. Nothing more. An hour later, he called and said my cat needs to be replaced and suggested I consider doing the O2 sensors as well. I told them to do the Cat only, as the sensors are a piece of cake to replace
     
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  5. Aug 21, 2016 at 5:31 PM
    #5
    anthony250f

    anthony250f [OP] Well-Known Member

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    Believe I fixed the problem. I had routed the diff breather in the cab
     
  6. Aug 21, 2016 at 8:31 PM
    #6
    cruiserguy

    cruiserguy Well-Known Member

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    Lol, yeah that'd do it.
     
  7. Aug 22, 2016 at 10:11 AM
    #7
    Indy

    Indy Master of all I survey.

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    Well, I guess if you had to plug 1 end of the engine into the cab you chose the right one.
     
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  8. Aug 22, 2016 at 3:06 PM
    #8
    Wyoming09

    Wyoming09 Well-Known Member

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    just curious why you would plumb the diff breather into the cab??
     
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  9. Aug 22, 2016 at 4:15 PM
    #9
    anthony250f

    anthony250f [OP] Well-Known Member

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    I don't have a gas cap area and everything is "open" and I was being paranoid about water and mud and shit lol.
     
  10. Aug 22, 2016 at 4:18 PM
    #10
    cruiserguy

    cruiserguy Well-Known Member

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    No biggie, but you did get a chuckle out of me:rofl:
     
  11. Aug 22, 2016 at 4:20 PM
    #11
    David K

    David K Well-Known Member

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    Differential Breather Mod Light Bar: 4 Cree LED lamps Bilstein 5100s Ride Rite Air Bags
    The breather just needs to be higher than any water crossing level. I put mine in the storage cubby, it was too easy! See my signature link for the thread on how to do the breather mod...

    caveman_c13c8f81dc49be4c6440f39467eefc847895beda.jpg
     
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  12. Aug 23, 2016 at 12:44 AM
    #12
    Wyoming09

    Wyoming09 Well-Known Member

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    I can understand being paranoid I feel the same way about women and sex so avoided it so far .

    A few more years and I should be safe
     
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  13. Aug 23, 2016 at 4:11 AM
    #13
    Indy

    Indy Master of all I survey.

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    Just chain them together and route it towards the top of the engine compt. If you're real paranoid loop the end back down, or terminate it in your air intake.

    I can't imagine the kind of hell smelling grear oil all the time must be. I HATE that smell.
     
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  14. Aug 23, 2016 at 5:09 AM
    #14
    cruiserguy

    cruiserguy Well-Known Member

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    Gear oil = man perfume
     
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  15. Aug 23, 2016 at 11:58 AM
    #15
    Wyoming09

    Wyoming09 Well-Known Member

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    I don`t think it smells anything like the chemical added to propane .

    Gear oil has it`s own smell one never forgets
     
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  16. Aug 23, 2016 at 12:00 PM
    #16
    digitaLbraVo

    digitaLbraVo Derka Derka

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    Covered in stickers and chrome stick-ons for extra horse torques and foot powers. Icon sticker gets me tons of travel, dozens of milimeters.
    :rofl:



    :bananadead:
     
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  17. Aug 24, 2016 at 3:24 AM
    #17
    Indy

    Indy Master of all I survey.

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    You don't date much do you...? :laugh:

    :)
    :)
     
  18. Aug 24, 2016 at 3:45 AM
    #18
    dmharvey79

    dmharvey79 Well-Known Member

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    What the? LMAO
     
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  19. Aug 24, 2016 at 4:35 AM
    #19
    cruiserguy

    cruiserguy Well-Known Member

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    Oh is that my problem??? I always thought it was the unique 'vocabulary' that wrenching has taught me!
    I thought gear oil attracted gals like 'sh!t attracts flies'! The things you can learn on this forum.... Now I know, and knowing is half the battle. Thanks TW!
     
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  20. Aug 24, 2016 at 4:36 AM
    #20
    dmharvey79

    dmharvey79 Well-Known Member

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    OP, just a heads up...don't do that if you decide to upgrade your exhaust.
     
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