RE: Z308 Alert Buzzer Question?
 

Good morning fellow Mariah brethren! :)

Question: At the weekend I experienced the alert buzzer alerting me whilst all temp & pressures (T&P's) were good and the engine was running smooth. As the second owner of my Z308 I unfortunately to not have the original publications, and cannot determine what the issue is -Can anyone please help?



We woke Sat morning in Oak Harbor WA where we were visiting. After using the blower for 3-4min, I attempted to start the engine. As expected the alert buzzer sounded for 2-3sec, and then silenced as I starred the engine. After the engine settled and I began departure preparations, the alert buzzer restarted after approximately 1min. The buzzer would not cease, and embarrassingly I admit I disconnected the buzzer as all T&P's were good, and the engine was running smooth.

Approximately 5-10min later when at sea returning to our home port, I had my wife reconnect the alert buzzer, finding the alert buzzer had ceased the alert.

When the boat had been lifted onto dry dock back at port I connected fresh water coolant and restarted the engine to flush the block. When I restarted the engine the alert buzzer again sounded, forcing me to disconnect the buzzer as I flushed the engine.

The boat has only 70hrs on her, and this incessant alert buzzing has never occurred before - Has anyone any idea the cause?

Thanks for all your time considering this 'book' of a posting! :D

Thanks,
-Adrian

Re: Z308 Alert Buzzer Question?
 

Check the outdrive oil reservoir. Good luck:wink_thumbup:

Re: Z308 Alert Buzzer Question?
 

Re: Z308 Alert Buzzer Question?
 

Thank you Mark & WetWilly, I really appreciate your fast and concise answers! :wink_thumbup:

Re: Z308 Alert Buzzer Question?
 

I'll add #4 to WetWilly's list. Drive Oil Reservoir Level Sensor could be bad. That happened to me earlier this year. It took my shop 3 separate diagnostic tests and 4 visits to figure it out. It was a $40 replacement part, but ended up costing over $550 in service visits and labor to get it fixed! And since you've got a 7.4L MPI and it's about the same age as mine, I'd definitely get it checked out. :wink_thumbup:

Re: Z308 Alert Buzzer Question?
 

Good morning Chris.

Thanks for your pointer from your recent experience. Indeed the engine/drive manuals for the 454MPI list 3 core potential causes, but your additional is a good pointer to an potential issue which may save me $500+ of diagnosis - Many thanks! :wink_thumbup:

-Adrian
(2001, Z-308, 454MPI, 75hrs TT)