coffee can on firewall?

Discussion in 'Technical' started by '72 Comet GT, Sep 30, 2002.

  1. '72 Comet GT

    '72 Comet GT getting there

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    OK, what is that coffee can-sized canister on the passenger firewall? Got a couple large hoses and some small ones too? If its not necessary it looks like a good place for a MSD box.
     
  2. Mavaholic

    Mavaholic Growing older but not up!

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    If you have factory air it will be the vacuum storage for your heater/air controls.
     
  3. '72 Comet GT

    '72 Comet GT getting there

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    No factory air

    Well, unfortunately I don't have A/C so that's ruled out.
     
  4. 74merc

    74merc computer nerd

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    two rubber lines run into it?
    if my camera hadn't borked I'd take a pic of mine.
    sounds like the vacuum canister, I don't think it is limited to AC cars.
     
  5. Will

    Will I

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    its some kind of emission's crap, that you don't need
     
  6. 74merc

    74merc computer nerd

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    the "coffee can" is the vacuum canister.
    the "emissions crap" has a dome lid with two ports on top.
    charcoal canister to help absorb some gas fumes.
    tends to make the car smell better, along with emissions stuff.
    mine was damaged when I got the car, it is no longer on it.
     
  7. rickyracer

    rickyracer Member

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    coffee anyone

    It's a vacuum canister to store vacuum. This is for any vacuum controls, such as heater, A/C, etc that a car "might" have. Usually you find them on bigger luxury cars for hide away headlights, heater/AC controls, power lockers, etc.
    Or on nonluxury cars, it's where you can hide stuff in.
     
  8. mark_b

    mark_b Member

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    I agree! I have always understood it to be a vacuum resevoir. It keeps vacuum fluctuations (while operating vacuum powered accesories) to a minimal.

    Ford put it there for a reason...Might be best to keep it.
    :D
     
  9. Rick Book

    Rick Book Member

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    Possible answer to the coffee can question:

    Someone secretly switched your vacuum reservoir with Folgers!

    (and YOU NOTICED!)


    :D
     
  10. Will

    Will I

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    !!!them nazi bastards!!!
     
  11. Corbin Johnson

    Corbin Johnson Member

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    Maybe I am mistaken, but I think '72 Comet GT is talking about the carbon canister. This is mounted on the passenger's side, and it has a few hoses going to it. The factory air vacuum canister is mounted low, and has two vacuum hoses connected to it. The charcoal canister has a hose going to it that came from the gas tank where it collects the fuel vapors and then sends them to the air cleaner when the engine is turned on. Is there a sort of paper ridged tube connecting the "coffee can" to a port on the side of the air cleaner? There would be if it were stock. Is it? Anyway, the vacuum reservoir is about the size and shape of a softball and is mounted low (almost to the frame rail). The only "coffee can" that was on any of our Mavericks were carbon canisters. You don't NEED this, but supossedly it will save you some money by burning the evaporated gas again and not letting the gas escape into the atmosphere.
    -Corbin
     
  12. EFIMAV

    EFIMAV Member

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    well done Corbin
     
  13. '72 Comet GT

    '72 Comet GT getting there

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    Useless

    Yep, I've got an edelbrock carb and intake, so the can just sits there useless. I'll probably just pull it out when I buy a MSD box, now I'm considering what to do with the fuel vent line...Wouldn't think it'd be a good idea to plug it, but dunno if i should cut it back, cap it, or just leave it connected to the firewall and just pull the canister.

    BTW thanks for the info guys.
     
  14. 74merc

    74merc computer nerd

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    I've done away with mine, now I smell gas depending on the quality of the road.
    I've got to check into this better.

    btw, MarkB, got another pic of your Comet?
    looks familiar
    http://red74merc.tripod.com
     
  15. Will

    Will I

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    could you use the line as a return line if you were puttin efi on it??
     

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