CaptRonn
Well-Known Member
- May 25, 2016
- 1,550
- Boat Info
- 1999 Sea Ray 400 Sedan Bridge
- Engines
- Convert fuel into noise
Has anyone had any problems with one of these?
My boat will start and run normal, but after a while the engine will stop as if the ignition has been cut off (engine stop, gauges go dead). If I use the emergency power switch, the engine starts normal and runs normal, as long as I keep emergency power switch engaged. Once I release the emergency switch, the engine shuts off and loses power to the gauges.
And when I return to the dock, an hour later the engine starts working normal.
It's been an intermittent problem for a while now. I've traced out all of the wires, replaced the battery, replaced the ignition switch, replaced the ignition circuit breaker. Still happens. And I've cleaned all of the grounds and also checked the battery cables.
These engines have a MPR (Main Power Relay). I'm beginning to wonder if the MPR is going faulty and causing this. However, while it explains the sudden loss of 12vdc, it doesn't explain why switching batteries via emergency start brings the system back online and works uninterrupted.
Mercruiser is being no help. I tried their technical support and was told to go find a local Mercruiser dealer.
My boat will start and run normal, but after a while the engine will stop as if the ignition has been cut off (engine stop, gauges go dead). If I use the emergency power switch, the engine starts normal and runs normal, as long as I keep emergency power switch engaged. Once I release the emergency switch, the engine shuts off and loses power to the gauges.
And when I return to the dock, an hour later the engine starts working normal.
It's been an intermittent problem for a while now. I've traced out all of the wires, replaced the battery, replaced the ignition switch, replaced the ignition circuit breaker. Still happens. And I've cleaned all of the grounds and also checked the battery cables.
These engines have a MPR (Main Power Relay). I'm beginning to wonder if the MPR is going faulty and causing this. However, while it explains the sudden loss of 12vdc, it doesn't explain why switching batteries via emergency start brings the system back online and works uninterrupted.
Mercruiser is being no help. I tried their technical support and was told to go find a local Mercruiser dealer.