Warning siren - 2015 Mercury Pro XS 200HP

[Smalls21]

2 hours ago, fishinwrench said:

Good deal.  

Odd though, because you said it was doing the "beep beep beep beep" instead of the "Beeeeeeeeeeeeeeeep".  The intermittent beep is oil/fuel sensors, and the continuous beep is the Overheat sensor.

Just for future knowledge, the smallest passageways in the cooling system are the water intake holes and the pisser outlet.    If nothing is blocking the intakes....and there's a pee stream coming out, then there's likely no debris "clogging the cooling system".   

couldn't there be debris clogging it up if it had collected there over time?

[Guest]

yeah, it makes no sense to me. It was beeping intermittently, not continuously 

[aarchdale@coresleep.com]

I had a small stick get sucked up mine once and it got wedged in the thermostat. It wouldnt let the Thermo do its job so every time i would get on plane it would beep 4 times and go into guardian mode.  IT would idle just fine without the beep but as soon as i gave it gas it would shut me down. 

[fishinwrench]

2 hours ago, aarchdale@coresleep.com said:

I had a small stick get sucked up mine once and it got wedged in the thermostat. It wouldnt let the Thermo do its job so every time i would get on plane it would beep 4 times and go into guardian mode.  IT would idle just fine without the beep but as soon as i gave it gas it would shut me down. 

Sounds like your water pump pressure/volume was down also.  Any piece of debris small enough to make it to the valve part of the thermostat wouldn't cause an overheat.   Just the opposite, it would cause the motor to take longer to warm up to operating temp, and if anything it would cause it to run hotter at idle.....not the other way around.  

[aarchdale@coresleep.com]

I dont know how all that crap works. All i know is i pulled the stick out of the thermostat and it ran great for another year until i traded it in on my new motor.  IT was a 60hp 4 stroke if that makes any difference

[Guest]

5 hours ago, fishinwrench said:

Sounds like your water pump pressure/volume was down also.  Any piece of debris small enough to make it to the valve part of the thermostat wouldn't cause an overheat.   Just the opposite, it would cause the motor to take longer to warm up to operating temp, and if anything it would cause it to run hotter at idle.....not the other way around.  

I’m pretty sure that’s what happened. He explained it similar to what you said.