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3.8 V6 MAP sensor vacuum line?

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  • 3.8 V6 MAP sensor vacuum line?

    Does anybody know where the vacuum line from the front of the MAP sensor goes to, my buddies 3.8 firebird is missing it and throwing the code. The back line goes back around the fuel rail and it is there.
    Last edited by SSTODD; July 21st, 2009, 12:53 PM.
    sigpicMODS: SLP DUAL/DUAL EXHAUST, 160 STAT, MTI LID, SHANER S3 T.B., SMOOTH BELLOWS, DESCREENED MAF, TUNNEL BRACE, UMI SFC & PHB, STRANO SWAY BARS, DRILLED/SLOTTED ROTORS, WHISTLER LIGHTS, BLACK BILLET GRILLE w/69'SS EMBLEM, BLACK SMOOTHED TAIL PANEL w/69'SS EMBLEM, BLACK SS HOOD INSERT, INTIMIDATOR SS WHEELS.

  • #2
    Is that the one that hooks up to the throttle body?
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    • #3
      It has to hook up to a port with manifold vacuum.

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      • #4
        This engine was swapped and this is the only issue is the possible missing vacuum line, it has vacuum right there so it goes to something else from there maybe? both motors were 99' 3.8's and we capped it and stopped the vacuum leak and seems to run better.
        Last edited by SSTODD; July 21st, 2009, 12:55 PM.
        sigpicMODS: SLP DUAL/DUAL EXHAUST, 160 STAT, MTI LID, SHANER S3 T.B., SMOOTH BELLOWS, DESCREENED MAF, TUNNEL BRACE, UMI SFC & PHB, STRANO SWAY BARS, DRILLED/SLOTTED ROTORS, WHISTLER LIGHTS, BLACK BILLET GRILLE w/69'SS EMBLEM, BLACK SMOOTHED TAIL PANEL w/69'SS EMBLEM, BLACK SS HOOD INSERT, INTIMIDATOR SS WHEELS.

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        • #5
          i have a 3.8 in my car.. the line goes from the left side of the front of the intake, runs back and loops forward to a small box on the left side of the engine... evap thing i think.. ill have to look later today when i go back out to my car if you havent figured it out.. but any ways... theres should be two brackets holding these black boxes.. that line goes to one .. theres another small hose joining them together and there is a line on one again that connects to a line with the fuel line.. think its a evap canaster hidden in the driver side rear fender.
          DraftKid


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          The best part about buying new tires is burning the old ones the day before

          1996 RS 3.8L ... for now

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          • #6
            The MAP has 2 ports, one on the rear is going around the back of the intake to the fuel/evap. but the front port is the question we have. he thinks it goes to the auto trans. somewhere?
            sigpicMODS: SLP DUAL/DUAL EXHAUST, 160 STAT, MTI LID, SHANER S3 T.B., SMOOTH BELLOWS, DESCREENED MAF, TUNNEL BRACE, UMI SFC & PHB, STRANO SWAY BARS, DRILLED/SLOTTED ROTORS, WHISTLER LIGHTS, BLACK BILLET GRILLE w/69'SS EMBLEM, BLACK SMOOTHED TAIL PANEL w/69'SS EMBLEM, BLACK SS HOOD INSERT, INTIMIDATOR SS WHEELS.

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            • #7
              sigpicMODS: SLP DUAL/DUAL EXHAUST, 160 STAT, MTI LID, SHANER S3 T.B., SMOOTH BELLOWS, DESCREENED MAF, TUNNEL BRACE, UMI SFC & PHB, STRANO SWAY BARS, DRILLED/SLOTTED ROTORS, WHISTLER LIGHTS, BLACK BILLET GRILLE w/69'SS EMBLEM, BLACK SMOOTHED TAIL PANEL w/69'SS EMBLEM, BLACK SS HOOD INSERT, INTIMIDATOR SS WHEELS.

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