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How do you check for AIR and EGR on an LT1?

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  • How do you check for AIR and EGR on an LT1?

    Just out of curiosity, how would I go about checking for emissions equipment on an LT1? AIR, EGR and such? Thank you
    Red 95 Trans Am: M6, Moroso CAI, Magnaflow, Spohn sway bars, back to life as of 2/15/10!!!
    SOLD- Kinda miss it
    94 Del Sol VTEC: 27 city/ 33 highway, knee deep in slowness
    SOLD- Good riddance!
    2006 Ford Fusion: 2.3, 5 speed, could run 15lbs of boost with a 150 shot and it'd still be slow

  • #2
    What are you looking for? Proper operation or just want to make sure all of the components are there?
    No F-Body right now

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    • #3
      Originally posted by Mark B
      What are you looking for? Proper operation or just want to make sure all of the components are there?
      To make sure the components are there
      Red 95 Trans Am: M6, Moroso CAI, Magnaflow, Spohn sway bars, back to life as of 2/15/10!!!
      SOLD- Kinda miss it
      94 Del Sol VTEC: 27 city/ 33 highway, knee deep in slowness
      SOLD- Good riddance!
      2006 Ford Fusion: 2.3, 5 speed, could run 15lbs of boost with a 150 shot and it'd still be slow

      Comment


      • #4
        Shoebox has photos of all the EGR, AIR and EVAP components on his website. He has a 95, so they should match your car completely.

        http://shbox.com/1/4th_gen_tech1.html

        The EGR system includes a vacuum line from the middle of the drivers side intake manifold to the EGR solenoid, mounted on a bracket at the back of the intake, a vacuum line to the EGR valve, mounted on the back of the intake, and a metal riser tube from the area of the #8 exhaust runner to the back/passenger side of the intake manifold.

        AIR includes a hose connection from the intake air ducting to the AIR pump on the lower front/drivers side of the engine, and a system of metal and rubber tubes from the pump to the exhaust manifolds on both sides of the engine. There will be a large black conical check valve at each exhaust manifold. Depending on whether you have the "AIR recall" work done, there may be some vacuum components between the AIR pump and the drivers side of the intake manifold.

        EVAP includes hoses from the fuel tank to the charcoal canister in the drivers side rear fender, accessed from the back of the fender well, a hose (plastic tubing and metal pipe) to the front of the car (combined with the fuel supply and return lines. The hose from the rear connects to a metal U-tube on the drivers side of the intake, wraps around under the throttle body to the passenger side of the engine, to a vacuum solenoid on a bracket on the passenger side of the intake manifold. Then a plastic hose from the vacuum solenoid to the lower nipple on the passenger side of the throttle body.

        In addition to the photos, there are also schematics showing the individual components. Shoebox rules!!
        Fred

        381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP/800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117MPH straight motor

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        • #5
          What he said.
          No F-Body right now

          Comment


          • #6
            Originally posted by Injuneer
            Shoebox rules!!
            Couldn't agree more! Thanks everyone!
            Red 95 Trans Am: M6, Moroso CAI, Magnaflow, Spohn sway bars, back to life as of 2/15/10!!!
            SOLD- Kinda miss it
            94 Del Sol VTEC: 27 city/ 33 highway, knee deep in slowness
            SOLD- Good riddance!
            2006 Ford Fusion: 2.3, 5 speed, could run 15lbs of boost with a 150 shot and it'd still be slow

            Comment

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