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Old 10-25-2017, 06:22 PM   #1
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my low oil overheat alarm is not working . where do I start to look to fix it .
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Old 10-25-2017, 10:59 PM   #2
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Locate the alarm under the helm. Verify there is 12V on the purple wire. Then ground the tan/blue wire to see if it sounds. If it doesn't the alarm is bad. If it works then I suspect it's the oil pressure switch.

You can also just try grounding the water temp switch tan/blue wire to see if it sounds.
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Old 10-26-2017, 02:33 PM   #3
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Technically, doesn't turning the key to ACC. act as the Alarm Test mode? I was always under the impression that that is why it sounds. It verifies you have power to the starting system and that the alarm is working.
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Old 10-26-2017, 04:59 PM   #4
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Quote:
Originally Posted by shrew View Post
Technically, doesn't turning the key to ACC. act as the Alarm Test mode? I was always under the impression that that is why it sounds. It verifies you have power to the starting system and that the alarm is working.
Most boats don't have an ACC position on the ignition switch like cars do. I think you mean the RUN position and yes that will test the alarm as the oil pressure switch is closed due to no oil pressure as the engine is not yet started. Once the key is then rotated to the start position and the engine starts releasing the key returns it back to the RUN position but now the oil pressure switch is open because oil pressure exits.

The OP has not provided details as to why he thinks its not working.
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Old 10-27-2017, 11:50 AM   #5
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If I turn my keys to run without starting, there’s like a 10 second delay before the alarm starts. Are most like that?
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Old 10-27-2017, 12:25 PM   #6
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Quote:
Originally Posted by speedysprocket View Post
If I turn my keys to run without starting, there’s like a 10 second delay before the alarm starts. Are most like that?
There is a delay and time seems to vary between boats. I assume this is due to the tolerance of the alarms components resulting in different time constants.
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Old 10-27-2017, 03:00 PM   #7
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Most boats don't have an ACC position on the ignition switch like cars do. I think you mean the RUN position ......
Yes, that is exactly what I meant. I appreciate the clarification.
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