Merc 502 Alarm
#11
Banned
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.
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.
#13
Charter Member # 55
Charter Member
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.
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.