wideband problem

Discussion in 'Fuel and Air Systems' started by crazy 340, Jun 30, 2018.

  1. crazy 340

    crazy 340 Well-Known Member

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    last night went for a ride whit the duster

    at first I notive the wideband gage was gouffy ( autometer 4379 )

    AutoMeter Ultra-Lite Digital Gauges 4379

    but the engine was cold and didnt let the time at the senser to heat up
    so didnt care much about it

    after maybe 20 minute of highway driving a took a look at the gauge
    and saw a 17.0 reading !!!!!!!!!!!

    I know the carbs is ok and have the right jet in it
    thats the carb I went to the dyno with so ...

    playded with the gaz pedal a little to see if the reading change
    it change but about 30 second later and ounce again with wird number

    if I let the engine idle and play with gas its wird all cind of number showing up


    whats wrong ?
    do I need an other senser?
    do I need to buy the autometer senser ?? pretty costly just for a senser !!!

    thanks bob
     
  2. brian6pac

    brian6pac Well-Known Member

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    Where is the O2 mounted, how far from the port, how long is the pipe after the O2, do you have any header gaskets leaking?
     
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    • crazy 340

      crazy 340 Well-Known Member

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      the bung was weld maybe 3 years ago right after the headers flange
      alwais work fine accept lst night
      doesnt seem to have an headers leak
      and its a full exhaust system with tail pipe and every thing
       
    • AJ/FormS

      AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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      Faulty connection at the ground?
       
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      • myduster360

        myduster360 FABO Gold Member FABO Gold Member

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        What is this mean?
        "if I let the engine idle and play with gas its wird all cind of number showing up"
        Rephrase
         
        Last edited: Jun 30, 2018
      • AJ/FormS

        AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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        That's Quebec-English, for the numbers are meaningless and unrelated to what one would expect after tickling the gas-pedal,lol.
         
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        • dusted

          dusted Well-Known Member

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          Recalibrate the sensor. My Innovate wife and needs to go thru a calibration every now and again. I’m not sure about an autometer but I imagine it would be the same concept.
           
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          • AJ/FormS

            AJ/FormS 367 FormS clone 3.09-1.92-1.40-1.09-.78od 3.55s

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            Whatsa "wife and"?,lol is that like a henway?


            EDIT
            Oh I get it; my wife needs a re-calibration too, now and then
             
            Last edited: Jul 6, 2018
          • dusted

            dusted Well-Known Member

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            That’s a I phone autocorrect!!!! Hate it when it substitutes words! Either that or my fingers hit the wrong key.
            Should read “Wideband”
             
          • TrailBeast

            TrailBeast Slightly Twisted Member

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            Try what dusted said about recalibration, then start looking for connection problems in the wiring for the O2 sensor.
            Unplug and reconnect the sockets on your wiring.
            Also make sure none of the wiring has been burned or worn through.
             
          • plymouth4onthefloor

            plymouth4onthefloor FABO Gold Member FABO Gold Member

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            try to recalibrate like the guys recommend. bung should allways welded in between 10 and 2 oclock, waterspray from the exhaust gases kill them. don't heat the sond during cranking. never run it without heating. If recalibrating doesn't work, replace it. Follow the installation as i request.
             
          • BigBlockMopar

            BigBlockMopar BigBlockMember

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            I usually don't have time between 10 and 2, let alone recalibrating the wife, which would be man's nr.1 dream ofcourse.
             
          • crazy 340

            crazy 340 Well-Known Member

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            as he said or translate
             
          • crazy 340

            crazy 340 Well-Known Member

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            how do I do that???
             
          • myduster360

            myduster360 FABO Gold Member FABO Gold Member

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            You can't do a Free Air calibration most econo/hobby Widebands ,like your Autometer. So that is not an option for you
             
          • crazy 340

            crazy 340 Well-Known Member

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            I will take a look at wiring tomorow

            thanks
             
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            • plymouth4onthefloor

              plymouth4onthefloor FABO Gold Member FABO Gold Member

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              Don't use contact spray o.e., the lambda sonde will not work proper after that, because the reference outside air is coming through the wiring. Any spray will block it!