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Recent content by RedRiverToBlueWater

  1. R

    Mercruiser 5.7 Guardian Mode

    THANK YOU for the feed back. Additional spec information. I am running in-line inboard, closed cooling, with transmission cooler. When brining it up slowly, it goes into guardian approx. 2,500 RPM (I'm going from memory on this) When the incident happened, I replaced the impeller and launched...
  2. R

    Mercruiser 5.7 Guardian Mode

    I have a 2022 Mercruiser 5.7 300 HP MPI, non-emission repower engine, w/ closed cooling, and Mercury 48 Pin ECM 555. I had an event and I lost my impeller. The engine was at idle and went into Guardian mode. I replaced the impeller, cleared codes with Rinda/Diacom. I still had issues. I...
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