beep or beeeeeepp
 

1988 mercury o.b.
my engine alarm went off for about 30 secounds and it was a steady beep
not beep beeep beep is the steady beep for the temp or oil i think its the temp
then it stop and never came back on
anything to be concerned about?

Any time your warning horn sounds it's time to be concerned.

A continuous steady beep sound comes from either of your two overheat sensors (one on each head) closing and sends a signal to your warning module (ECU) mounted on your powerhead, which in turn makes a completed circuit and sounds the horn in your remote control shift box.

The intermitent beeping sound comes from your oil quantity (low oil) indicator circuit, meaning that the oil in your reservoir is down to the last quart.

what i didnt get was that the first thing i looked at was the temp, gauge and it was not hot. maybe something like a bag caught my intake on the lower unit but it still didnt read hot, what do you think?

I have a 200 hp 91 Merc that does the same thing occasionally.. on mine it's a bad heat sensor that I'm too cheap to replace since the engine is a spare just sitting around. For me it sounds when I start and goes away instantly. As long as your temp gage is showing normal operating temp, your telltale pisser is showing a good stream and your engine feels warm, not hot when you feel the block I'd think you were ok.. of course that's just an opinion and to be perfectly safe I would get it checked as soon as possible..:head:

You might wanna verify that you temp gauge is working properly...it probably is, but sometimes it pays to be sure...particularly if the problem persists...