I'm looking for a bit of guidance and a fresh perspective. I do understand the issue should ultimately be diagnosed via computer, and I already have that scheduled.
The problem arises at around 3500 RPMs, where I get a single, constant alarm along with a slight reduction in power. When I reduce the throttle, it transitions to a two-beep alarm that lasts for roughly five minutes. I have VesselView connected, but no error codes are being triggered.
The screenshots below were taken after replacing two sensors. I changed the water pressure sensor, as it was clearly reading incorrectly (PSI should be in the 15–20 range). The oil temperature consistently shows 32°F both at idle and under load. Engine temperature doesn’t exceed 100°F in either condition. Initially, the thermostat was missing from the housing; I installed a new one, but the engine still won’t reach normal operating temperature.
This has me stumped. Oil pressure and voltage readings are within spec. I also used an IR gun to check the risers, thermostat housing, and other areas where coolant flows—none are even close to the expected 160°F operating temp.
I'm hoping to pick someone's brain here, as I feel like I might be overthinking this. The engine isn’t overheating, but it seems like there's too much cooling, which is just as concerning.
The problem arises at around 3500 RPMs, where I get a single, constant alarm along with a slight reduction in power. When I reduce the throttle, it transitions to a two-beep alarm that lasts for roughly five minutes. I have VesselView connected, but no error codes are being triggered.
The screenshots below were taken after replacing two sensors. I changed the water pressure sensor, as it was clearly reading incorrectly (PSI should be in the 15–20 range). The oil temperature consistently shows 32°F both at idle and under load. Engine temperature doesn’t exceed 100°F in either condition. Initially, the thermostat was missing from the housing; I installed a new one, but the engine still won’t reach normal operating temperature.
This has me stumped. Oil pressure and voltage readings are within spec. I also used an IR gun to check the risers, thermostat housing, and other areas where coolant flows—none are even close to the expected 160°F operating temp.
I'm hoping to pick someone's brain here, as I feel like I might be overthinking this. The engine isn’t overheating, but it seems like there's too much cooling, which is just as concerning.
