No announcement yet.

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

  • Filter
  • Time
  • Show
Clear All
new posts

    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

    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 (RETIRED)

    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


      "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



        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 $$
        Edmonds, WA
        "THE FIX" '93 2556
        Carbureted 383 Vortec-Bravo II
        The Rebuild Of My 2556
        My Misc. Projects