I m willing to bet your oil pressure sensor just went bad.
12 valve cummins oil pressure sensor removal.
I would guess 5 10psi because the gauge does not have any numbers that low.
Either way it cured the problem oil pressure drop off and chime at idle jay.
Cummins oem 12 valve single wire oil pressure sensor is located below the injection pump and could be in front of or behind injection pump support bracket.
Oil pressure is fine before and after 1800 1900 rpm.
04 17 2010 01 41 pm.
04 15 2010 08 30 pm.
But in that range while very hot the pressure drops to near 0.
5 9l cummins 12 valve 1994 1998 5 12 valve oil pressure problem.
Remove oil pressure sensor put new oil pressure test gauge on no pressure when ran.
The location was determined by the.
96 cummins 12 valve has low oil pressure after running down the road.
Removed oil feed line bone dry.
5 9 cummins oil pressure gauge install.
Herd noise coming from turbo removed intake pipe turbo is wiped do to lack of oil.
I replaced my sending unit this past summer.
12 valve cummins oil pressure parts.
Home oil pressure after valve adjustment cummins marine diesel repower specialists forums cummins marine engines oil pressure after valve adjustment this topic has 6 replies 3 voices and was last updated 1 year ago by mike schmidt.
Only happens when very hot not just up to temp and idling.
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Yep mines a 98 12v.
Update on my oil pressure sensor install and gear box leaking.
As i just got done changing the oil in my 12 valve about 20 minutes prior to this happening.