Constant Alarm SeaRay 220 1995

[SeaRayer220]

Thank you everyone for your time!

1995 Sea Ray 220BR 5.7 mercruiser, Bravo 1

Problem(s):
After engine running for 10 or 15 minutes to check idling problem on dry land ( ear muffs and hose attached ) an alarm has come on and it's a constant beep, sounds like it's coming from somewhere around my helm, no guages seem to be reading danger.

I've filled the Gear oil, so it's not that.

It's not reading anything close to dangerous heat temp.

I read somewhere that It could possibly be a bad impeller sensor? Anyone else have any issues like this?


I've recently spotted a leak at the very bottom of the stern coming in by one of the motor mounts, I'm either assuming my Drain Plug ( 2 piece brass ) is leaking or it's a possible leak on the bottom of my outdrive casing. Are they prone to seal break and leak?

New boater and I'm still learning!

 

[Fun Times]

Hi, welcome to iboats!

Is the engine carbureted or fuel injected?

Typically when an engine warning horn sounds, it would be low oil psi, engine temperature to high, or the gear lube reservoir low...And if the engine is fuel injected, then possibly another sensor might sound the horn too depending on the situation.

Bear in mind that all the sensors that operate the gauges are different than the sensors that sound the warning horn so anything is possible...Plus even though the oil reservoir may be full, the float switch inside might be stuck down sounding the warning horn. Or the overheat or oil psi switches might have failed or reading something different vs what the gauge reads due to location.

The engine warning horn should have a Tan/Blue wire going to the sensors. To try and help narrow things down, you could try removing the wire one at a time with the engine on and horn sounding to see if the horn stops then go from there for repairs.... It will be interesting to know if the warning horn stops once the engine has cooled off. The overheat switch should sound right around 196+ degrees.

Below is an example wiring diagram that contains the warning horn system. It's the C section to the right.
Make sure the horn is not coming from a depth gauge mounted at the helm.