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  1. W

    Mercruiser Mag 350 guardian problem

    Serial number is 1A652676 Yes, techmate is connected and does not show any faults when guardian mode comes on. Thank you for these suggestions!
  2. W

    Mercruiser Mag 350 guardian problem

    Hi, I have a 2011 Mercruiser MAG 350 MPI Bravo, with a persistent guardian mode problem - we have replaced the throttle sensor as our Rinda Techmate was showing an error code, but the engine is still going into guardian mode. But at random speeds - sometimes at 2500 RPM, or sometimes at 4000...
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