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92 Accord EXR – Code 1, 41, 43

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 92 Accord EXR – Code 1, 41, 43

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    Topic
  • #440463
    Rich RichWhiteheadRichWhitehead
    Participant

      Good afternoon everyone.
      1992 Accord EXR failed emissions test…..
      issues –
      NO reading almost double the allowable ppm.
      CO% almost four times the allowable reading.

      The internet and a paper clip helped me pull OBD codes 1, 41 and 43 from my 1992 accord.

      Code 1 –

    Viewing 9 replies - 16 through 24 (of 24 total)
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    • #440477
      BigCBigC
      Participant

        Great update! Glad that the CO levels are now good. Can you physically attempt to open up the EGR valve? If your EGR valve is operated off vacuum, apply vacuum to the valve. During idle, the engine should stall if you open the EGR valve. That being said, if the EGR valve is opened at idle and the car does not stall, that would indicate a plugged EGR valve. (since the EGR passageways have already been cleaned).

        The pintle inside the EGR could be stuck and/or gummed up. Keep us posted.

        #440480
        EricTheCarGuy 1EricTheCarGuy
        Keymaster

          High NO is usually the result of an EGR or catalytic converter problem. As for the EGR the cleaning the valve probably won’t cut it you may have to go in and clean the passages. As for the cat the easiest way to tell if it’s working is after the car is warmed up take it’s temperature and the inlet and the outlet, it should be 100

          #440481
          Rich RichWhiteheadRichWhitehead
          Participant

            @ BigC – tested the EGR with the vacuum pump and it’s operational.
            @ ETCG – EGR port plugs were pulled, ports cleaned and new plugs installed.

            There is now a very noticeable exhaust leak in the front pipe at the flex.

            #440482
            EricTheCarGuy 1EricTheCarGuy
            Keymaster

              There is something else that helps with NOx emissions and that’s the catalytic converter, if you strike out with the EGR you may be headed there next to get the NOx down.

              #440483
              Rich RichWhiteheadRichWhitehead
              Participant

                Fixed the leak in the exhaust…
                Failed the etest.

                Changed the catalytic converter….and then it PASSED!!

                Thanks to all contributors to this thread for all your help.
                It was pretty nice to solve a problem systematically rather than taking shots in the dark…(and the wallet).

                #440484
                BigCBigC
                Participant

                  Great. Thanks for the updates RichWhitehead. Glad you got the problems fixed. I enjoyed the systematic approach you took. Glad we could help. Until next time…take care.

                  #440485
                  EricTheCarGuy 1EricTheCarGuy
                  Keymaster

                    It’s not the valve that normally gets clogged, it’s normally the passages from what I’ve seen. You could redo the test to see but if the NOx is still high then it’s time to start looking at the catalytic converter.

                    #440486
                    Rich RichWhiteheadRichWhitehead
                    Participant

                      Hey Eric…..you must be tired, man…..you’re a work-horse…
                      Changed cat on your advice earlier and car passed e-test.
                      Car is good to go….until next time.
                      Thanks a million.

                      #440487
                      EricTheCarGuy 1EricTheCarGuy
                      Keymaster

                        Sweet thanks for keeping us up to date. It is true, some of my days can get pretty long but it’s hard for me to say no to someone asking for help.

                      Viewing 9 replies - 16 through 24 (of 24 total)
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