Vessel View – Erratic Engine Coolant Temperature Readings

[Mark Gillespie]

We have a 2013 Cummins QSC 8.3 600 HP engine with a Vessel View display in our Back Cove 37 boat. The Engine Coolant Temperature values are jumping (20 – 30 degree increments) all over the place from negative -10 degrees to 171 degrees. The Engine Coolant sensor has been replaced, thinking it would solve this issue. It did not.

We are running at 2490 RPM. Engine starts off performing its normal warm up mode to 171 degrees. Then half way through our trip the Temperature values start jumping up and down erratically. Plenty of raw water is going through the engine. We also just had the impeller replaced too.

Please advise cause and possible resolution(s).

Thanks in advance.

Mark

Topic

[Corey Schmidt]

Mark Gillespie wrote:

Hi Cory,

Thank you for your response and the link to the VV manual. How does one retain the use data (e.g., Engine Hrs, Fuel Consumption, Avg Fuel / Hr, etc.) from the VV if a factory reset is performed? Please advise. Thanks, Mark

All of that engine information is stored on the engine computer. Think of the VesselView as a “TV Monitor” and nothing else….

[Mark Gillespie]

Factory Reset on VesselView

Hi Cory,

Thank you for your response and the link to the VV manual. How does one retain the use data (e.g., Engine Hrs, Fuel Consumption, Avg Fuel / Hr, etc.) from the VV if a factory reset is performed? Please advise. Thanks, Mark

[Corey Schmidt]

I think the best bet to solve the issue before assessing anything physical would be to perform a factory reset on the display panel itself and see if you can get the reset to make things right again.

https://www.sbmar.com/docs/VesselViewManualSept2010.pdf

[Philip]

You have an electrical gremlin. It’s going to take some time and effort to find and correct as it’s not a simple one size fits all answer once you have replaced the coolant temperature sensor.

You need to start at the sensor and follow the harness all the way back the the ECM. Disconnect every plug slowly and carefully so you don’t break any clips etc. inspect the pins for push back and corrosion, clean each side with a tooth brush and WD-40 and reconnect. Hopefully you find a plug with some corrosion but even the tiniest bit can cause your issue.

As you go along inspect the harness for wires rubbing etc. it’s going to take some time to do this right and to get into some yoga positions with lights and mirrors but it’s the only way.

Phil

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