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Fuel system code

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    #1

    Fuel system code

    My 1991 keeps throwing a "43" code I believe this is a fuel system problem. I have no leaks back by the tank or from what I can tell nothing up in the bay that is causing the problem... Any suggestion

    Cheers
    Tags: None
    #2
    Most times, 43 is indicating a bad o2 sensor. Change it for a Denso or NTK (no Bosch), reset the ECU, and it should fix the problem.






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      #3
      02 s

      Why not Bosch? I changed it last week to a Bosch! gotta spend more cash. Why is bosh different

      Comment

        #4
        They just don't work on these cars.






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          #5
          Still inquiring

          So replaced the o2 sensor with a denso and still throwing the same code. I'm at a lost wondering if someone has a simple diagram of what the o2 sensor wires to I think that maybe my issue as it was rewired into the harness

          Comment

            #6
            Did you reset the ECU?

            If you spliced the harness, that may be your issue. It's never a good idea to cut stock wiring. Especially with something as sensitive as an o2 sensor. If your splice alters the signal at all, it could cause issues.






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              #7
              Thank you and well aware wondering if there is a hard wire diagram that I can look at however.. Cheers

              Comment

                #8
                Both grounds are interchangeable, make sure you crimp the connection, solder doesnt work in high heat applications. If the colours dont match, try swapping the coloured wires,then reset your ECU.
                sold! But here's my build thread for those interested.

                http://www.cb7tuner.com/vbb/showthread.php?t=206864

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                  #9
                  Sweet ride I really would fancy one of those!! I think your on about the obd2 sensor is that correct? And how do you reset as I have read a slew of different ideas and have tried three and I don't know if they are correct

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                    #10
                    I truly meant O2 sensor

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