Mercruiser 5.0 Bravo 3

[Safe]

2006 Maxum 2400 Se with mercruiser 5.0 bravo 3 I replaced the impeller and thermostat temp running at 180 degrees also when I’m at 3000 Rpm I get an alarm and goes into guardian mode until I bring rpm lower then 3000k Rpm can someone guide me in the right direction to what might be causing that?

 

[Scott Danforth]

Check for bravoitis

 

[alldodge]

Need more info?
What is motor serial number?

 

[Safe]

Need more info?
What is motor serial number?

Ow623782

 

[alldodge]

Try disconnecting the in-gear switch and see if this stops the issue

 

[Safe]

Where is that located

 

[alldodge]

Where is that located

On the shift plate attached to or beside the motor. It has throttle control and cables attached

 

[Safe]

Thank you will try that first thing in the morning and let you know how it goes. if that does the trick do I just leave that disconnected or is there a fix for it?

 

[Safe]

Check for bravoitis

I don’t think it’s clogged because when I replaced the impeller boat was in the water and took off the inlet hose on water pump water rushed in like a fountain until I plugged it.

 

[alldodge]

Thank you will try that first thing in the morning and let you know how it goes. if that does the trick do I just leave that disconnected or is there a fix for it?

Can leave it disconnected or replace or adjust switch

 

[Scott Danforth]

Test your pump outlet flow

At idle the bravo pump will fill a 2 gallon bucket in less than 15 seconds (that is the minimum flow you should see)

 

[dubs283]

No way to know for sure the reason for alarm without a diagnostic scan tool. If you have vessel view or the mobile app system you can see fault history with that

Otherwise wag would be sea water pump pressure out of range, overspeed in neutral or overheat

 

[Safe]

No way to know for sure the reason for alarm without a diagnostic scan tool. If you have vessel view or the mobile app system you can see fault history with that

Otherwise wag would be sea water pump pressure out of range, overspeed in neutral or overheat

What is the mobile app system?

 

[dubs283]

It's a system designed to display engine information for a user through a mobile application on a device. It is aptly named vessel view mobile

Cheaper than diacom but limited in it's capabilities. It will show a user any active or stored faults plus various engine operating parameters however limited on deeper diagnostic information

Again, is the engine catalyst controlled?

 

[Safe]

On the shift plate attached to or beside the motor. It has throttle control and cables attached

I disconnected that switch and it stopped that alarm. So should I just buy a new switch for it?

 

[alldodge]

Probably be best, but I really don't know why Merc would think a in-gear switch is a good idea. Like we wouldn't know when it's in gear above 2500 rpm. It would run fine with it disconnected

 

[Safe]

I appreciate you thank you!!