Help with 6 beep issue

[jpcsoccer]

Hello.... I have a pontoon with a mercury 150. If I go more than 30 mph for about 60-90 seconds, the body gives me 6 beeps, sputters and won't let me go that speed. If I throttle down to neutral and then back up to 20 mph, seems to run fine. This is repeatable.

Any ideas what I'm looking at?

 

[alldodge]

Welcome

What is the motor serial number?

 

[jpcsoccer]

The serial is 2B703927

 

[alldodge]

Thanks
It's coming up a new Seapro model, and I don't have a manual that new. (I do need to buy one because I have a new V8 Verado)

In any case it's going into guardian mode and restricting power. Check the oil level and Battery voltage

Check that it's peeing and you get the one beep when key is turned ON

Other then that ost likely need to get motor scanned

 

[jpcsoccer]

Thanks

 

[jpcsoccer]

Thanks

the boat was hooked up to a computer. the issue was a faulty thermostat. The mechanic repaired the thermostat and ran the boat for a while at full throttle with no issues. Also ordered a new thermostat. That will be put in the motor while it is at the dock. So, back in the water!!!