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DIS-connected O2 Sensors.....

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    #1

    DIS-connected O2 Sensors.....

    I just (finally!) installed some Flowtech headers on my `88 GMW along with a 'custom' true dual 2 1/4" exhaust. I didn't have time to weld in the bungs for the O2 sensors and just drove it home as-is.....

    How will having them disconnected affect the A/F mixture along with any other areas...???

    It seemed to run OK but it's hard to tell compared to before because of the new exhaust....





    Tags: None
    #2
    it'll run pig rich

    1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
    2006 Lincoln Town Car Signature. Stock for now
    1989 Ford F-250 4x4 much much more to come, sefi converted so far.
    1986 Toyota pickup with LSC wheels and 225/60/16 tires.
    2008 Hyundai Elantra future Revcon toad
    1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

    please be patient, rebuilding an empire!

    Comment

      #3
      Thanks for the response.....

      Is there any way to get around that for time being before I get a chance to get them installed...???

      One more question that's somewhat related, will manually extending the wires from the plug to the sensor change anything...???

      I could get them to work as-is but don't want to chance melting something.....






      Last edited by Da Woody; 05-06-2008, 06:16 PM.

      Comment

        #4
        get a pr of o2 sensors for a 88 lincoln mark 7 they have longer wires

        1986 lincoln towncar signature series. 5.0 HO with thumper performance ported e7 heads, 1.7 roller rockers, warm air intake, 65mm throttle body, 1/2" intake spacer, ported intakes, 3.73 rear with trac lock, 98-02 front brake conversion, 92-97 rear disc conversion, 1" rear swaybar, 1 3/16" front swaybar, 16" wheels and tires, loud ass stereo system, badass cb, best time to date 15.94 at 87 mph. lots of mods in the works 221.8 rwhp 278 rwt
        2006 Lincoln Town Car Signature. Stock for now
        1989 Ford F-250 4x4 much much more to come, sefi converted so far.
        1986 Toyota pickup with LSC wheels and 225/60/16 tires.
        2008 Hyundai Elantra future Revcon toad
        1987 TriBurner and 1986 Alaska stokers keeping me warm. (and some pesky oil heat)

        please be patient, rebuilding an empire!

        Comment

          #5
          You can extend the wires, it won't hurt anything. If yours aren't fairly new I'd go with the Mark VII parts and call it a day.
          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

          Comment

            #6
            Originally posted by gadget73 View Post
            You can extend the wires, it won't hurt anything. If yours aren't fairly new I'd go with the Mark VII parts and call it a day.
            x2

            We had a 99 Cobra in the shop a few weeks ago for a custom exhaust system, we extended the O2 sensor wiring with heat shrink style but connectors and heat shrink sleeves (just to be safe).

            Make sure to use the same gauge wire.
            1987 LTD CROWN VICTORIA, 5.0 EFI, MAGNAFLOW DUAL EXH, RED LANDAU
            FRESH AOD, 3.27 OPEN DIFF, 57K MILES, B&M SHIFT KIT AND R134A A/C

            Comment

              #7
              Last set I did this to, I cut the connectors off an old crap set as close to the sensor as possible, and then cut the plug off the new one as close to the plug as possible. Solder, shrink tube, voila.
              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

              Comment

                #8
                Reviving an old thread here...

                I have horrible gas mileage after my engine swap. Although I don't have a check engine light, leads me to beleive i've got 1 or both O2 sensors bad (they were re-used and wires were lengthened to reach from the headers to the oringinal plugs). Question: Above it says sensors from a 1988 Lincoln Mark VII will work for his situation, is that also true if I attempted to plug them in on my 1986 wagon? Advance auto shows the same part number for 1986 and 1988 Mark VII and 1986 Wagons, but I'm pretty sure the plug on my 1986 wagon and the plug on my 1987 wagon were different styles. so... if anybody knows if I can just buy this part number and it'd work on my 1986 wagon without having to lengthen the wire that'd be great! I'm looking at BWD OS110 if it helps.
                1986 Ford Contry Squire: HO engine swap, 3G alternator, 3.73 gears, rear air springs, Class III 8000 lb hitch... potential tow rig for my Blazer trail toy??

                Comment

                  #9
                  figured it out thanks to rockauto.com (pictures of both the O2 sensors and the plugs). I need to order 1986 Mark VII O2 sensors as the plugs indeed are different. Rockauto even shows the length on the AC Delco part, 10.75" for both the 1986 and 1988 models, so the 1986 part number should work for me just perfect! giddie up!
                  1986 Ford Contry Squire: HO engine swap, 3G alternator, 3.73 gears, rear air springs, Class III 8000 lb hitch... potential tow rig for my Blazer trail toy??

                  Comment

                    #10
                    If you've got an 86, you need 86 Mark VII LSC sensors. The 86 has a different plug. Same sensor though. If you get a generic sensor, it will be supplied without a plug, just cut your old ones off and splice them together.
                    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

                    Comment

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