Alarm Buzzer - Albin 36

[VicTh]

Good afternoon. I have a 1987 36' Albin trawler. Recently, I picked up an alarm buzzer while underway. I want to have it checked but cannot determine cause of the alarm. Engine temp is fine. Oil pressure is fine. No high water in the bilge. What other sources are usually connected to the alarm? Sorry to ask a basic question, but cause does not appear to be obvious. Thanks for your help. Vic

[jashmen]

Sorry I can't be much help. I believe ours is just oil, but might be mistaken. Something I guess I should figure out.

[rebuckley]

I think the original setup was only oil pressure and water temp. Now what a PO could have added, that is wide open. You seemed to have checked the big 3. One other that comes to mind is the "water flow"? (which would indicate a decrease in flow for the raw cooling water. I would look at the engine and see if you find any other sensors (basically a plug with 2 wires) in an odd location - once you know where it is, it will help diagnose what it may be. (could also be a faulty ground or sensor - kicking off when there is no issue)

[cdsailor]

Good afternoon. I have a 1987 36' Albin trawler. Recently, I picked up an alarm buzzer while underway. I want to have it checked but cannot determine cause of the alarm. Engine temp is fine. Oil pressure is fine. No high water in the bilge. What other sources are usually connected to the alarm? Sorry to ask a basic question, but cause does not appear to be obvious. Thanks for your help. Vic

Our 79 Albin 36 came with oil pressure and coolant temp alarm buzzers. If you haven't, I'd would verify oil pressure with a stand-alone gauge or mechanical gauge. Additionally, I'd shoot the engine in several spots with an IR thermometer to verify engine and coolant temps. Once confident that those values were within range, I'd likely consider replacing the alarm's sending unit. Since your buzzer happens underway, I suspect it's likely a coolant temp sensor. Good luck and let us know what you discover.