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check engine alarm 05 x10 when under load

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  • #16
    Oh wow, nice find!

    Since this is the first time this happened to me with this boat and I just got the boat last year I do have a question about the check engine alarm. Since the alarm doesn't go off until certain situations as described above, is the code still permanently stored? I don't keep the boat at my house unfortunately so I'll have to look the next time I'm with the boat but do I also have a check engine light? If so whats the difference? Thanks for the help.

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    • #17
      Originally posted by redac7 View Post
      Oh wow, nice find!

      Since this is the first time this happened to me with this boat and I just got the boat last year I do have a question about the check engine alarm. Since the alarm doesn't go off until certain situations as described above, is the code still permanently stored? I don't keep the boat at my house unfortunately so I'll have to look the next time I'm with the boat but do I also have a check engine light? If so whats the difference? Thanks for the help.
      I would say fix one item at a time. The "BAD" issue could be bad grounding related which could pop bad voltage alarms and cause a check engine. Not 100% sure but it might happen.Try and figure out the wiring for the depth sensor and see if you can't fix it. might just be a loose wire. I would start at the known issue and go from there. Make sure you have plenty of beer on standby for when you think you fix it but it's still broke....

      A check engine light usually looks like a red round light...its super obvious if you have one...its on or off so if you didn't notice a big red light on your dash with a check engine label(it also might be a normal light up engine icon on the gauge like a car sometimes). then you might not have the light, It probably just assumes you'll see the gauge messages for the alerts.

      I'm not 100% sure about code permanency. but some codes stick and some don't. The alarm I don't think should ever stick unless the sensors are telling it to actively alert. Take the temp sensor for example. when over temp it goes off, as soon as at normal temp is stops, no resets required. On cars the check engine light will go on for a few days until the system decides its no longer an issue (unless you manually reset) boats I'm not sure about since they don't go by normal vehicle standards
      Sam
      Website: www.SteadyPass.com
      Email: [email protected]
      Boat: 2005 Maristar 280 SST Twin Crusader 375

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      • #18
        I found a guy who can pull the codes, these are the codes from the check engine alarm
        Attached Files

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        • #19
          Based on everything I have looked up and seen I would start at the TAC sensor, It's somewhere on near your ECM. All the codes are directly related to it so hopefully you have a single part replacement fix. See the below and let us know how it goes


          https://www.mastercraft.com/teamtalk...7&d=1338229809
          Check out this document. to a ctrl+f on DTC 81. cycle through the finds on DTC 81 and you come to your two troubleshooting guides on
          * Fuel Injector Driver A
          *Fuel Injector Driver B


          Also this is a great thread I found in my search previously posted here with a lot of info. I suggest reading through the whole thing.

          https://www.mastercraft.com/teamtalk...t=61320&page=2
          Sam
          Website: www.SteadyPass.com
          Email: [email protected]
          Boat: 2005 Maristar 280 SST Twin Crusader 375

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          • #20
            I had a very similar problem and it was a bad knock sensor located in the port side engine block drain hole.
            2001 X30 LTR

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            • #21
              Man I wish this thread had closure because my 05x2 is doing the exact same thing this past weekend. When I load up with 3500 pounds of ballast and surf my alarm trips. Also smell fuel when I come down to neutral. I just ordered new plugs, distributor, rotor, water temp sensor, Knock sensor, and Map sensor. I have a feeling though its the Map sensor because it was pretty gummed up when I removed it. Will update in a week after parts arrive.

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              • #22
                My issue ended up being a lose knock sensor so I got lucky.

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                • #23
                  Thanks for updating. Hopefully one of the handful of parts I ordered solves my problem.

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                  • #24
                    My boat ran like a dream today. Wish I knew which part was bad but they were all old and needed to be replaced anyway

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