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mercury 250 hp efi '1997 alarm

hlannie

New member
my temperature and oil light blink back and forth while my audible alarm sounds intermittant beeping. there is no pattern to how many times it beeps before it stops. Sometimes I can speed the throttle up and make it stop. I turned the key on today and it beeped 31 times and stopped, waited a while and it started again and beeped about 15 times and stopped and I never started the engine. I have also noticed two different tones of beeping. I have just replaced two of the coils to get the engine to run properly, and it is opperating at full rpm(no guardian activated and no engine reduction). Any help would be greatly appreciated
 
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Re: mercury 250 efi '97 alarm

The answer should be in your owners manual.

The "alarm" you are getting indicates that either the Throttle Sensor "OR" one of your Temp Sensors is shot...
 
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