2002 Mercury 60hp Continuous Alarm Sounding

Nates78ski

Seaman Apprentice
Joined
Apr 22, 2014
Messages
37
Hey guys, I've got a 60hp Merc that I can run at idle with no issue (ran it for ~15mins the other day). I kept it in neutral and ramped up the throttle a bit and around 2500-2800rpm I get a continuous alarm sounding. I shut the engine down, restart it, and it'll idle fine with no alarm until I ramp it up a bit again.

According to the manual, the continuous alarm could be a cooling system problem, Low oil pressure, Engine Overspeed, Battery Voltage, or Coolant sensor Failure. The Oil level is fine and I know it's not hitting the rev limiter at under 3k rpm. So It would have to be cooling issue, batt voltage or coolant sensor.

Any thoughts guys?
 

tlh 178

Petty Officer 3rd Class
Joined
Jul 14, 2013
Messages
91
i just went thur the same problem. i replace the popit vavle and water pump and impellar. problem fixed.
 
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