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-   -   Merc 502 Alarm (https://www.offshoreonly.com/forums/general-q/353984-merc-502-alarm.html)

BUP 05-17-2018 12:02 AM

It would be wise to scan the engine to look for faults and out of spec parameters.

Possible general warning 1 - oil pressure switch. I would look there if no scan is done. A scan can pin point the fault if one is present.

Mefi 3 does not have an EXHAUST temp fault / or warning for stock OEM apps.

shunter2005 05-17-2018 09:48 AM

Hey BUP. On a side note, off subject for a sec. Did you ever get the Lavey done?

Griff 05-17-2018 10:05 PM

The high water temp alarm doesn't go off until about 195*.and the sensor is in the intake manifold.

You could just have an alarm wire that has rubbed through and is grounding itself.
A ground completes the circuit and sets off the alarm. I had it happen several years ago.


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