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Code 43

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    #1

    Code 43

    Fuel Delivery System
    Lol
    Well I looked it up and it appears to be 2 parts
    Pressure Regulator
    O2 Sensor

    I kinda did a test
    I revved the car at 2500 of 30 seconds
    It purred nicely until the CEL came on, where it then missed and sounded a little different.

    I replaced the Pressure Regulator gasket and such, but nothing...

    I did seafoam lol
    Also, the car has always run rich (ie: black tail pipe), what causes this?
    Your man for wiring solutions!
    CB7Man's Coupe H22 Swap
    CB7Man's Sedan Resurrected From The Dead
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    #2
    usually code 43 points to your o2 sensor. of course if its running rich, the most likely the o2 is bad

    if you replace it go with a ntk sensor or a denso.
    Members Ride

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      #3
      o2 sensor seems to be a popular change to rid the 43 code.

      The New-ish Ride
      My old Ride
      Hear my Vtak!!!
      MK3 Member #3
      I piss off people for fun.
      IA 08 Sunburn Victim #1

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        #4
        Ill borrow one from the junkyard, if it solves my problem Ill go to the dealer and get an OEM one
        Ofcourse then I would return the JY O2

        But then my 1996 5th gen has a 100% perfectly clean tail pipe
        I mean all thats on it is dust!
        Im talking about the inside too and it has 200K almost
        How is this possible, keep in mind it is factory. Is is runnning lean or something?
        Last edited by CB7Man; 12-05-2007, 02:52 AM.
        Your man for wiring solutions!
        CB7Man's Coupe H22 Swap
        CB7Man's Sedan Resurrected From The Dead

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          #5
          I just got the ol' 43 on my 93 ex a few days ago. Yeah I think it's the O2. Don't know for sure, but I suspect it.

          on the stairs, she grabs my arm, says whats up,
          where you been, is something wrong?
          i try to just smile, and say everything’s fine.

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            #6
            i have also fixed two of these cases by seafoaming the vehicle. haven't had a problem since.

            but i would recommened a new sensor
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              #7
              True, im almost at 1/8 tank I guess another seafoam wont hurt
              I replaced/checked everything fuel related
              I replaced the FACTORY fuel filter yesterday rofl
              Your man for wiring solutions!
              CB7Man's Coupe H22 Swap
              CB7Man's Sedan Resurrected From The Dead

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