2004 4.3 merc beeping

[beautiful dawn]

I have a 2004 tahoe q4 with a 4.3 merc 4 bbl. I am getting what seem like random beeps while the boat is running. I do get the initial beeeeeeep when starting but it quits when the oil pressure is up, but at random times during a trip I will get a random beep, or maybe two quick beeps or one long beep. All the gauges read fine. temp is a hair above 160, oil pressure is about 60 when running and about 35 or 40 idling, drive fluid is at the full line. I have checked the connections one the backs of the all the gauges and at the little speaker thing that actually makes the sound and they all seem good. I am stumped, and it is driving my wife nuts. any thoughts or suggestions would be greatly appreciated, thanks.

 

[Don S]

Re: 2004 4.3 merc beeping

There are 3 items that can turn on the alarm, oil pressure switch, coolant temp switch, and gearlube reservoir switch.
Best thing you can do is disconnect them one at a time and run the boat and see which one is causing the problem.
They all have a tan/blue wire going to it. Disconnect that wire.

 

[beautiful dawn]

Re: 2004 4.3 merc beeping

Thank you for the information. If I am understanding correctly disconnecting these wires will not render the gauges inoperable just the warning beeper?

 

[Don S]

Re: 2004 4.3 merc beeping

The alarm switchs are not connected to the gauges.

 

[beautiful dawn]

Re: 2004 4.3 merc beeping

Just wanted to update this, and say thanks for the help. I found all the wire connection for those switches. I made sure they were all connected good and tight. I guess that was all it needed Thanks again.