Audible Alarm

[Ddmccoy]

I have a 2005 3100SE. I get a solid audible alarm as soon as I hit 3500 RPM. It is caused by the port engine. As soon as I drop the port engine just be,low 3500 RPM, the alarm stops. I have changed the Oil pressure sensor and he water temp sensor. Any idea what might cause this? Its very frustrating. Thanks, Dave

[mmwjr]

What you replaced are the sensors for the gauges which is separate from the alarm sendors for oil and water temp, these are separate units. The gear lube reservoir has a level alarm sensor as well.

[shrew]

How are engine temps at the time the engine runs above 3500?

[BC_3200SCR]

if you unplug the 2 wire temp sensor and no more alarm, you can determine if it is the temp side vs oil side.
I just found a bunch of old impeller debris jammed in my thermostat inlet.