My Mercruiser engine alarm is beeping. What does it mean?
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If it is a constant-tone alarm, the most common cause is overheating. For steady beeping, check the outdrive lube reservoir (on top of the engine). If it is a double-beep once per minute, it could be either the Idle Air Controller (IAC) or a wiring fault. For a more detailed list of alarms and fault codes, including a formatted copy suitable for printing, look here:
For a complete list of alarms and faults including detailed troubleshooting guides, buy or download a copy of Mercruiser Service Manual 33 (big block engines) or Mercruiser Service Manual 36 (most other engines).
Answers
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