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Fuel system help

Discussion in 'Long Travel Suspension' started by 45acp, Nov 6, 2012.

  1. Nov 6, 2012 at 10:01 AM
    #1
    45acp

    45acp [OP] Paint me back in Wyoming again...

    Joined:
    Aug 9, 2009
    Member:
    #20861
    Messages:
    5,886
    Gender:
    Male
    First Name:
    Jonathan
    Boring, Wisconsin
    Vehicle:
    bone stock / unmolested 04 2.7L
    I know I put this in the LT section, please move it if need be. I figured you LT guys know more about fuel systems/cells than most others.

    Looking at relocating my tank for various reasons. Haven't figured out the exact setup up... fuel cell, tank swap or otherwise. All I know is I want it to pass emissions, and setup in a way that it won't screw with the computer stuff and throw codes.

    First thing, can anyone give me a brief overview of the parts and how the various tank systems work? A link would be great but I can't seem to find shit anywhere online.

    Can someone ID the part with the black cap with the tube and wires coming out of the rear section of the tank? I assume it's part of the evap system.

    [​IMG]

    I bought some OEM tank parts off a Taco ('01 v6) being parted out. Problem is, the sending unit I picked up doesn't the plug/sensor or whatever it is (can someone ID this please?) that is on the unit already on the truck. Don't know if this is going to be an issue.

    [​IMG]
     
  2. Nov 6, 2012 at 4:03 PM
    #2
    45acp

    45acp [OP] Paint me back in Wyoming again...

    Joined:
    Aug 9, 2009
    Member:
    #20861
    Messages:
    5,886
    Gender:
    Male
    First Name:
    Jonathan
    Boring, Wisconsin
    Vehicle:
    bone stock / unmolested 04 2.7L
    After a lot of searching, looks like the plug on the sending unit is the vapor pressure sensor. The other part on top of the tank I still can't figure out. Most of the diagrams I found don't even show it. Best guess is the fuel overfill check valve? If this is the case, is it a necessary part of the smog system?
     
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