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Educate me on 02 Sensors

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  • Educate me on 02 Sensors

    Im going to replace my 02 sensor on my new engine since i totally raped it while trying to get it out. I heard some things about 'wideband' & 'narrowband' sensors... Whats the difference? Witch do I want? Any other usefull 02 sensor info welcome.

    -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
    -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

  • #2
    you use wideband for tuning purpose. more accurate.

    correct me if im wrong but isnt the stock form a narrowband.
    sigpic
    99 Grand Am GT
    3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
    Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
    1357 cam 227 233 .050 dur
    515 515 lift 112 lsa
    15.232@88.85mph on stock 3400---New time to come


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    • #3
      Yes narrow band is what the ECM uses.

      Wideband is for tuning, as it's much more accurate/wider range of viewing the AFR. Some Widebands come with a narrowband conversion output box thingy for the ECM and you can run one O2. But I've heard widebands do not last that many miles so it shouldn't be your main O2.
      sigpic New 2010 project (click image)
      1994 3100 BERETTA. 200,000+ miles
      16.0 1/4 mile when stock. Now ???
      Original L82 Longblock
      with LA1, LX9, LX5 parts
      Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

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      • #4
        As geldartb said, you would use a wideband O2 sensor when you want to get serious about your tune. It's considerably more accurate and has more AFR range than the stock narrowband sensor. Your narrowband sensor is limited to just 14.7 AFR. Most wideband sensors can handle a range from 9 to 16 AFR. One thing to keep in mind is they are not directly interhangable. Yes they both fit the same O2 bung, but they run on different voltages. Narrowband range from 0 to 1 Volts, while wideband range from 0 to 5 Volts. Thus your PCM won't recognize a wideband sensor unless the controller for that sensor has a simulated narrowband output. This would have to be hard wired in place. I don't know of any places that make plug and play kits for this.
        Your local OBDII moderator

        2000 Grand Am GT w/ WOT parts

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        • #5
          isnt there a wideband that has narrow band output too?
          3500, 1280 cam and PR, ls6 valve springs, port and polished heads, ported lim, ported uim, 4.3 70mm tb, ported trueleo headers and y pipe ALL FOR SALE (minus the car)
          96 LT4 6spd corvette. 355, AI 215cc LT4 Comp CNC Heads, Prope SRS pistons, Ported intake, ARH long tubes, Corsa Indy Pace 4:10 gears
          2012 Chevy Sonic Turbo 6spd
          1970 M35A2 Deuce and a Half, Spin on filters, Turned up IP, HIDs, Flat Black, 11.00x20 singles.

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          • #6
            And then there's the AC Delco vs. Bosch topic...
            '98 Volvo V90 - Ford 5.0 swap in progress
            '96 LR Range Rover 4.6 HSE - suspiciously reliable
            '92 Volvo 740 Wagon - former parts car, now daily-driver beater
            '71 Opel Kadett Wagon - 1.9L CIH w/ Weber DGV 32/36, in bits

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            • #7
              Originally posted by merlot566jka View Post
              isnt there a wideband that has narrow band output too?
              There is no wideband sensor that has a narrowband output. Instead the controller for the wideband sensor can have a narrowband output as well as the wideband output. The LM1/LC1, UEGO and PLX controllers can all do this.
              Your local OBDII moderator

              2000 Grand Am GT w/ WOT parts

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              • #8
                Yeah im just gona go with a narrow band. The wideband seems like alot of work and sure maybe if it was a plug&play but im just gona get the car running before i start adding a bunch of stuff


                Originally posted by Canyonero View Post
                And then there's the AC Delco vs. Bosch topic...
                ??? Id prob get the acdelco unless its like really expensive or somthing..

                -GREEN 1995 Pontiac Grand Prix SE - L82/5spd MTX +
                -White 1995 Pontiac Grand Prix GTP - 97 207DOHC/6SPD MTX +

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                • #9
                  After AC Delco I'd say go for Denso. Sparkplugs.com has good prices.
                  sigpic New 2010 project (click image)
                  1994 3100 BERETTA. 200,000+ miles
                  16.0 1/4 mile when stock. Now ???
                  Original L82 Longblock
                  with LA1, LX9, LX5 parts
                  Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

                  Comment


                  • #10
                    Originally posted by IsaacHayes View Post
                    After AC Delco I'd say go for Denso. Sparkplugs.com has good prices.
                    X2

                    Stay away from Bosch for narrowband sensors. GM PCMs don't like them for some reason.
                    Your local OBDII moderator

                    2000 Grand Am GT w/ WOT parts

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                    • #11
                      Not to burst any bubbles but gm DIS doesnt like bosch platinum plugs either :S.
                      You may or may not know 10 times what i do.
                      ASE Master certified. Just means I can take tests. GM ASEP Graduate.
                      95' Z26, ported/cammed 3400/3500, OBD2, 282, T3T4. Boxes almost all empty..

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                      • #12
                        We know this! lol
                        sigpic New 2010 project (click image)
                        1994 3100 BERETTA. 200,000+ miles
                        16.0 1/4 mile when stock. Now ???
                        Original L82 Longblock
                        with LA1, LX9, LX5 parts
                        Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.

                        Comment


                        • #13
                          I have Bosch.
                          '98 Volvo V90 - Ford 5.0 swap in progress
                          '96 LR Range Rover 4.6 HSE - suspiciously reliable
                          '92 Volvo 740 Wagon - former parts car, now daily-driver beater
                          '71 Opel Kadett Wagon - 1.9L CIH w/ Weber DGV 32/36, in bits

                          Comment


                          • #14
                            So, if I may digress slightly: I have new Bosch HO2S (AC Delco would have cost $100 more for the pair, and I didn't know better), what symptoms might I be experiencing? Will they die young or will I run rich and get bad mileage or what?
                            '98 Volvo V90 - Ford 5.0 swap in progress
                            '96 LR Range Rover 4.6 HSE - suspiciously reliable
                            '92 Volvo 740 Wagon - former parts car, now daily-driver beater
                            '71 Opel Kadett Wagon - 1.9L CIH w/ Weber DGV 32/36, in bits

                            Comment


                            • #15
                              The complaints run from rough engine operation to hard starting to poor gas mileage.
                              Your local OBDII moderator

                              2000 Grand Am GT w/ WOT parts

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