[jkboliphant]

Through more research I have found that Mercruiser has a buzzer alarms that should sound for certain malfunctioning conditions. I was not aware of this as mine obviously doesn't work. Can anyone out there tell me where this buzzer is physically located so that I can troubleshoot it? Thanks.

[Z 202]

Not sure on yours, but on mine it's tied into the wiring in behind the panel where the stereo is.

[ShabahZ280]

It's located behind the dash. You can't miss it. I had to replace mine about two years ago. There's a company out of Columbus OH that makes the buzzers for Mercruiser. They're called Floyd Bell. The buzzer I used is from the M80 series. You can order it from them for about $10, or get the Mercruiser one for about $30.

I've attached a photo from the mercruiser parts diagrams for the 5.0L. It's labeled as number 12. This should help you identify it.

What I did was disconnect the wires for the buzzer, then connect to a 12v source, like the battery. If it squeals really loud, then it works, and it's time to start checking all your sensors. If not, then it needs to be replaced. I later found out the previous owner had disconnected it due to the fact it was constantly going off... nice huh?

[2 OWNER MARIAH]

On my 280 MCC it is located behind the shift and throttle panel.

Mine was constanly going of also, so I unhooked it until I could look for the problem. Never had any trouble with it until the repair shop put in a new starter for me. Well they must of un-hooked the water temp sensor next to the sarter and did'nt plug it back in.
Have not tried it yet in the water but I hope that is the problem