bjdunnie
New Member
- Feb 10, 2013
- 40
- Boat Info
- 2004 300DA
- Engines
- Twin 5.0l Mercrusier Bravo III
Hi everyone,
I am experiencing some sort of electrical issue with the port engine and Smartcraft gauges. I have an intermittent issue whereby the temp on gauges (both analogue and digital) fails to read. It will stay that way for between 5 – 10 minutes, and then all of a sudden the temp will show normal /correct operating temp, then without warning it fail again. This only occurs on the port engine. Temp gun suggests that there is no fluctuation in operating temp of the engine. The sensors have been swapped with the other engine and it made no difference.
Whilst down at the boat on Saturday, I happened to notice that the temp gauges came back to life when I touched the button to lift the engine hatch, maybe coincidence, but I tried it on several occasions when the gauges were reading zero, and sure enough, the temp gauges would come back to life. Maybe unrelated, but the port engine is also bad for breaking water PSI sensors – they rarely last for more than a month or so before they fail.
I have swapped the sensors, checked the connections to the gauges and the sensors on the engine and they all seem ok with no sign of corrosion. My gut feel is some sort of grounding problem for the engine, but I don’t really know where to start to investigate that.
Appreciate any advice
I am experiencing some sort of electrical issue with the port engine and Smartcraft gauges. I have an intermittent issue whereby the temp on gauges (both analogue and digital) fails to read. It will stay that way for between 5 – 10 minutes, and then all of a sudden the temp will show normal /correct operating temp, then without warning it fail again. This only occurs on the port engine. Temp gun suggests that there is no fluctuation in operating temp of the engine. The sensors have been swapped with the other engine and it made no difference.
Whilst down at the boat on Saturday, I happened to notice that the temp gauges came back to life when I touched the button to lift the engine hatch, maybe coincidence, but I tried it on several occasions when the gauges were reading zero, and sure enough, the temp gauges would come back to life. Maybe unrelated, but the port engine is also bad for breaking water PSI sensors – they rarely last for more than a month or so before they fail.
I have swapped the sensors, checked the connections to the gauges and the sensors on the engine and they all seem ok with no sign of corrosion. My gut feel is some sort of grounding problem for the engine, but I don’t really know where to start to investigate that.
Appreciate any advice