Announcement

Collapse
No announcement yet.

Warning Horn! Help!!

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Warning Horn! Help!!

    I have a 2011 235 with a 350 mag mercruiser. I have a warning horn that beeps once every minute. No loss of power, fluids are good, voltage is good, engine temp is good. Any help is greatly appreciated.

    #2
    I’m betting you have a loose or shorting wire to a sensor. Which one is going to be a process of elimination. The gauge and alarm switch are separate, so I’m going to have make some guesses as to location. The oil pressure alarm is going to be just above the normal filter location port side aft. There will be two switches there. One for the alarm, one for the fuel pump safety switch. The water temperature alarm switch should be on or near the thermostat housing. Trouble is the other one is the sending unit for the gauge. I don’t know which is which. That ought to get you started.
    P/C Pete
    Edmonds Yacht Club (Commodore 1993)
    1988 3818 "GLAUBEN”
    Hino EH700 175 Onan MDKD Genset
    1980 Encounter Sunbridge "Misty Blue" (Sold)
    MMSI 367770440
    1972 Chevrolet Nova Frame off Resto-mod in the garage
    Boating on the Salish Sea since 1948

    Comment


    • Shawn235
      Shawn235 commented
      Editing a comment
      Thanks I’ll see what I can find.

    #3
    A mercruiser engine scanner will allow you to read out fault codes.
    1997 Maxum 2400 SCR 5.7LX Bravo II

    Mike

    Comment


      #4
      Could it be your carbon monoxide sensor beeping?
      2009 Discovery 192
      3.0 L w/TKS, Alpha 1
      Vancouver, Canada

      Comment


        #5
        Mercruiser warning horns.pdf
        Be good, be happy, for tomorrow is promised to no man !

        1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

        '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

        Manalapan N.J

        Comment


          #6
          Originally posted by dcunning View Post
          Could it be your carbon monoxide sensor beeping?
          I also agree that if your boat is equipped with one, it could be this, CO sensors have a certain life span, and when the go bad they start beeping to let you know they need to be replaced.

          Comment

          Working...
          X