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wtf is this???

Discussion in '1st Gen. Tacomas (1995-2004)' started by higherlux, Jul 1, 2009.

  1. Jul 1, 2009 at 11:10 PM
    #1
    higherlux

    higherlux [OP] Well-Known Member

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    i have no idea what it is or dose
    any help?
    [​IMG]
    [​IMG]
     
  2. Jul 1, 2009 at 11:47 PM
    #2
    Timicha

    Timicha Timicha

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    i've always wondered the same thing haha. my mechanics teacher said that it takes any evaporated fuel from your tank and turns it back to a liquid or somethin and puts it back. the one in my truck always makes a buzzing sound after i turn the truck off. sounds like a bumble bee under my hood that is really pissed off :p
     
  3. Jul 2, 2009 at 6:04 PM
    #3
    kevhogaz

    kevhogaz Low Speed, High Drag

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    It's an Evap canister. It takes unburned fuel vapors, and basically puts 'em back in to the gas tank, instead of the atmosphere. It uses a purge pump, which is the buzzing you hear.
     
  4. Jul 3, 2009 at 12:11 AM
    #4
    Timicha

    Timicha Timicha

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    haha ya i ment what you said
     
  5. Nov 6, 2014 at 10:01 AM
    #5
    Mac The Steve

    Mac The Steve Member

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    I've asked this question on a similar thread - Does anyone know if my canister missing some hoses or is this a 1st generation configuration? I have a 1995 SR5 3.4 v6. The other photos on the site like the one above are newer (a '96 & a '98) so could be different. Would someone please take a look at my canister (pun intended) & tell me if the 'missing' hoses are normal? Thanks!
    [​IMG]
     
    Last edited: Nov 6, 2014
  6. Nov 6, 2014 at 12:15 PM
    #6
    Indy

    Indy Master of all I survey.

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    Ya, you're missing parts.
    [​IMG]

    [​IMG]

    Top, 1996 I had, lower 2k is the same.
     
  7. Nov 6, 2014 at 4:06 PM
    #7
    se7enine

    se7enine MCMLXXIX

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    [​IMG]

    This thing right here is what got rid of the buzzing sound once I added it. Mine did not have it on the original setup.
     
  8. Nov 10, 2014 at 3:41 PM
    #8
    Mac The Steve

    Mac The Steve Member

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    I found out that the part missing from my evap canister is the VSV (Vacuum Switch Valve) Toyota Part Number: 90910-12130. I have owned the Tacoma for a year & a half & have been trying to get better than 17 - 18 mpg. Maybe this will do it if I get one? Should I bother? I still don't know what the hell it does and it seems that there may be more than one in the Tacomas. Very little 1st generation insights on the web. Where would I plug in the sensor anyway - I don't see any loose wire adapters. Any help would be appreciated.
    [​IMG]
     
  9. Nov 10, 2014 at 4:24 PM
    #9
    se7enine

    se7enine MCMLXXIX

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    Maybe hook up a hose from here to here and see what happens
    [​IMG]
     
  10. Nov 10, 2014 at 7:53 PM
    #10
    jcfleck

    jcfleck Member

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    Mine makes a buzz every 7 to 9 seconds after I park sometimes. I can't hear it with the hood down and it goes away if I loosen the gas cap and put it back on.
     
  11. Nov 11, 2014 at 3:28 PM
    #11
    MikeZ

    MikeZ Well-Known Member

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    Found this Diagram. Should help you with what you are missing.

    [​IMG]
     
  12. Nov 11, 2014 at 3:34 PM
    #12
    keakar

    keakar Well-Known Member

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    there you go, you are missing the VSV and the vapor pressure sensor
     
  13. Nov 12, 2014 at 7:23 AM
    #13
    Mac The Steve

    Mac The Steve Member

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    Thanks Mike - good diagram was this for the 1st gen Tacomas? I'm getting different info everywhere I go. The 1996 & beyond seem to have info and this VSV configuration but I cannot find info on a 1995. It passed smog ok.
     
  14. Nov 12, 2014 at 8:38 AM
    #14
    keakar

    keakar Well-Known Member

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    well in your picture you definitely have the nipple for it so maybe they replaced the canister with the wrong one from a newer truck. if everything passed then just cap off the nipple with a vacuum hose cap and call it a day because I cant image it wouldn't pop up a code if you had a VSV and VPS and it was disconnected
     
  15. Nov 14, 2014 at 7:27 PM
    #15
    Mac The Steve

    Mac The Steve Member

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    Good thought keaker - thanks. I will give it a shot and update....
     
  16. Nov 16, 2014 at 8:51 AM
    #16
    Olafson

    Olafson Member

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    Charcoal canisters are on most american delivery vehicles starting back in the 70s I think. My old 71 super beetle even had one in the right side rear fender well. The carbon in the thing absorbs volatile organic compounds (VOCs) from the fuel tank and other places to reduce unburnt pollutants from being emitted into the atmosphere. The main issue is that these things use vacuum lines from the manifold and you want to make sure that there aren't any disconnected from the engine somewhere as vacuum leaks in any engine are bad. I'd try to put it all back if it were me, no telling what having the system cobbled up (missing crap) could be doing to your engine performance or mileage or whatever. B
     
  17. Nov 16, 2014 at 9:52 AM
    #17
    Dirty Pool

    Dirty Pool SEND ME TO THE 'LECTRIC CHAIR

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    For you folks with the "buzz". The little rectangular chamber circled in post #8 was added to later models to cure the buzz. It is nothing more than an empty chamber that provides a dead air space and keeps a check valve from fluttering. It is a well known issue with the previous version.
     
  18. May 19, 2016 at 6:43 AM
    #18
    FWAdam

    FWAdam Well-Known Member

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    Sorry to post in an old thread, but it is relevant . . .

    In the photo I've included (taken from above but with a red indicator circle), where does the other end of the circled line connect? Mine came loose when I was disconnecting the power steering lines, and I don't know where to reconnect it. Pictures are definitely helpful. ThankUntitled.jpg s for your help in advance!
     
  19. May 19, 2016 at 8:46 AM
    #19
    Indy

    Indy Master of all I survey.

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    It connects to your buttfer. :)

    I'll snap a pic later, truck is in the driveway.
     
  20. May 19, 2016 at 11:37 AM
    #20
    tan4x4

    tan4x4 Well-Known Member

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    FWAdam, see post #10
     
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