What is the Motorola device on Merc 5.0 MPI

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by LUnaCY, Sep 25, 2018.

  1. LUnaCY

    LUnaCY Member

    61
    Aug 28, 2018
    Afton, MN
    310 Sundancer 2002. Mercruiser 5.0 MPI Bravo III
    Mercruiser 5.0 MPI Bravo III
    During oil change (new owner) I saw a thin Motorola branded device on my stbd engine. Merc 5.0 MPIs on a 2002 310 DA. Upper port side of the stbd engine near the transom. I forgot to look for the same on the port engine. What it is?
     
  2. paulswagelock

    paulswagelock Well-Known Member

    Oct 25, 2010
    pa
    2018 SDX 270 OB 300 Verado
    Verado 300
    5875ACCC-6696-4ADC-8A7C-25D90A9DCF58.jpeg

    If it was on a silver plate bracket about 6”x9” then it was the engine ECM (computer that controls the engine)
     
  3. Larry Sturm

    Larry Sturm Active Member GOLD Sponsor

    102
    Mar 26, 2017
    Chiefland, Florida
    2003 SeaRay 420 Sundancer
    2003 SeaRay 320 Sundancer
    Cummins 6CTA8.3-M3
    Mercruiser 350MPI
    ECM Engine Control Module. One on each engine.
     
  4. LUnaCY

    LUnaCY Member

    61
    Aug 28, 2018
    Afton, MN
    310 Sundancer 2002. Mercruiser 5.0 MPI Bravo III
    Mercruiser 5.0 MPI Bravo III
    Thanks, was hoping I could call in fluid changes. lol
     

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