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what are these engine sensors for on my GM block?-gctid823337

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    what are these engine sensors for on my GM block?-gctid823337

    the sensor at the top rear of the block is the oil pressure sender, but I dont know what the one above the oil filter is for.... is it a switch for low oil alarm? as the single wire that is connected to it, also runs to what I assume must be a high temp alarm... when either get out of the "safe" range, the sensors trip the alarm?

    I would like to replace it but I dont know what it is for sure or what pressure range it should be.... thanks for any help



    NU LIBERTE'
    Salem, OR

    1989 Bayliner 2556 Convertible
    5.7 OMC Cobra - 15.5x11 prop
    N2K equipped throughout..
    2014 Ram 3500 crew cab, 6.7 Cummins
    2007 M-3705 SLC weekend warrior, 5th wheel
    '04 Polaris Sportsman 700 -- '05 Polaris Sportsman 500 HO
    Heavy Equipment Repair and Specialty Welding

    #2
    Yes, low oil pressure switch
    Joon, Kathy, Jaden & Tristan
    Uniflite 42 AC, DD 671N
    93 3058 sold
    92 2855 (day boat)
    91 Fourwinns 205 (lake boat)
    Longbranch WA
    Life is Good

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      #3
      "Ruffryder" post=823347 wrote:
      Yes, low oil pressure switch
      +1 and yes the alarm for low oil pressure and hot temp are wired together, if either closes the alarm sounds.
      1997 Maxum 2400 SCR 5.7LX Bravo II

      Mike

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        #4
        My alarm buzzer was acting goofy and both my temp and oil switches were not operating correctly (both stuck closed)

        I replaced everything with this kit, works great and save some $$

        http://www.overtons.com/modperl/prod...iABEgLhSPD_BwE
        Dave
        Edmonds, WA
        "THE FIX"
        '93 2556
        Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

        The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
        Misc. projects thread
        https://www.baylinerownersclub.org/f...56-gctid789773

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