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Removal/Replacement For O2 Sensors

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    Removal/Replacement For O2 Sensors

    On an '87 GM, with 5.0L, is it easier to do the job from the top (can't even see the passenger side sensor) or from the bottom with jacks or on a lift?


    "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

    "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

    "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

    #2
    If you have a lift, easier from the bottom. On just jackstands I'm not sure.

    85 4 door 351 Civi Crown Victoria - Summer daily driver, sleeper in the making, and wildly inappropriate autocross machine
    160KMs 600cfm holley, shorty headers, 2.5" catted exhaust, 255/295 tires, cop shocks, cop swaybars, underdrive pulley, 2.73L gears.
    waiting for install: 3.27's, Poly bushings, boxed rear arms, 2500 stall converter, ported e7's, etc

    06 Mazda 3 hatch 2.3L 5AT (winter beater that cost more than my summer car)

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      #3
      I've only ever done one on a CFI car, but they are on the passenger side. I changed it from the top and didn't have all that much trouble. I think I used the sensor wrench, not the socket. The wrench looks basically like a big flare nut wrench with a pivot on the end.

      86 Lincoln Town Car (Galactica).
      5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley

      91 Lincoln Mark VII LSC grandpa spec white and cranberry

      1984 Lincoln Continental TurboDiesel - rolls coal

      Originally posted by phayzer5
      I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousers

      Everything looks like voodoo if you don't understand how it works

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        #4
        I've got the special sensor socket (with the slot on the side for the wire) but if IIRC there is one on each side of the exhaust manifold. I can see the one on the driver's side (pretty low) but don't see the one on the passenger side as it is covered by wires, etc...


        "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

        "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

        "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

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          #5
          Unbolt the map sensor and lay it aside, it'll give you a bit more viewing space.

          Alex.

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            #6
            +1 MAP move... and from the top it should be easier. You'll need a nice long extension though. On my 88, at least, I used 1.5 feet of extensions on the half inch drive socket and my breaker bar to get the stupid things out. stubborn they were, but give up they did.

            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

            Originally posted by gadget73
            ... and it should all work like magic and unicorns and stuff.

            Originally posted by dmccaig
            Overhead, some poor bastards are flying in airplanes.

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              #7
              Great tips from one and all!! Thanks!


              "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

              "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

              "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

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