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TOPIC: what are these engine sensors for on my GM block?

what are these engine sensors for on my GM block? 01 Sep 2017 16:12 #1

  • Centerline2
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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

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1989 Bayliner 2556, 5.7 OMC Cobra

what are these engine sensors for on my GM block? 01 Sep 2017 16:47 #2

  • Ruffryder
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Yes, low oil pressure switch
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Joon, Kathy, Jaden & Tristan
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what are these engine sensors for on my GM block? 01 Sep 2017 22:45 #3

  • Nauti Mike
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Ruffryder 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.

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1997 Maxum 2400 SCR 5.7LX Bravo II

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what are these engine sensors for on my GM block? 01 Sep 2017 23:39 #4

  • builderdude
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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 $$
www.overtons.com/modperl/product/details...6EAkYAiABEgLhSPD_BwE
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Dave
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'93 2556 5.7 Bravo II 2.0:1 18 1/4x19 P
.030 over-Vortec top end-part closed cooled
***The rebuild of my 2556***
www.baylinerownersclub.org/index.php/for...ansom-repair-my-2556
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