Digitial oil pressure sensor issues

[Dirk]

Hi I have a 2014 Wakesetter with a 350 Monsoon and last time we had the boat out i got a high oil pressure alarm. I shut down the engine then restarted it and the oil pressure was normal but then went to 590 PSI then back down to zero. Now every time i turn the ignition on the pressure is reading 690 with the engine off then drops to zero when the engine is running. i have ordered a new digital oil pressure sensor which was $370, just wondering if anyone else has had the same issues?

[Nick55]

I think this is the service manual you need, https://marinepowerusa.com/wp-content/uploads/2019/08/MEFI-6-Service-Manual.pdf

Oil pressure wiring diagram should be section 9, page 24.  Usually a sensor that pegs like that then goes to 0 indicates a short or open circuit (like if it was unplugged).  It will also usually set a fault code, which that manual has troubleshooting for.

And to possibly save you some $$$, Skidim has the sensor for quite a bit cheaper. https://skidim.com/digital-oil-pressure-sensor.html

I would call them to verify that matches but I’m pretty positive it’s the right one   

 

[Nick55]

Sorry, I just realized you were in Australia.   Probably can’t save you any money there   

 

[Dirk]

Thanks for the information. i am in Darwin so no dealers up here this has been my main source of information. Thanks again for the manual that will make life a lot easer. 

[Nick55]

If that for some reasons isn’t the right one, you can look here.  They have all sorts of downloadable manuals. 
https://marinepowerusa.com/service-manuals/

Lastly, you can try removing the sensor on your engine and see what the PN is.  I’d be willing to guess it’s likely a GM sensor which may be used in some of your Holden vehicles with similar V8s.  

Edited October 27, 2023 by Nick55
Corrected vehicle brand