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I have a 250 mercury optimax that starts and runs but at
I have a 250 mercury optimax that starts and runs but at idle sets off the 054 code when excellerates to hih … read more
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Charles
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1996 150 optimax. System fault say check engine sensor?
1996 150 optimax. System fault say check engine sensor? … read more
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Charles
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Our Mercury OptiMax outboard engine is giving us a throttle
Our Mercury OptiMax outboard engine is giving us a throttle sensor failure warning light and the engine slows or stalls.… read more
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I have a 2005 Mercury optimax 150 that went into guardian
I have a 2005 Mercury optimax 150 that went into guardian mode because I failed to replace the cap on the oil reservoir. It checked out no problems when tested with the meter, but still seems to act l… read more
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I changed the oil pump, blew out the oil lines, good oil
I changed the oil pump, blew out the oil lines, good oil flow before and after, had the fuel tank cleaned, put new fuel in monday, water fuel seperator is clean, temp. is good. My question is does the… read more
Charles
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2007 150 hp Mercury Optimax engine alarm sounds at low rpm
2007 150 hp Mercury Optimax engine alarm sounds at low rpm after engine runs at high rpm for 20 minutes or more. If I do not run engine over 2500 rpm from startup engine will run hour or more with no … read more
Jason
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hi my name is ***** ***** have 150 h.p mercury optimax outboard year 2000 and the alarm be
hi my name is ***** ***** have 150 h.p mercury optimax outboard year 2000 and the alarm beep when i exceed over 2000 rpm a long beep alarm and the engine will slow the power speed… read more
Tan
Tan
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i have 2005 optimax 225, faulty tps and power sensor warnings
i have 2005 optimax 225, faulty tps and power sensor warnings on gauge. it sometimes runs fine and all of a sudden these warnings come on gauge and boat will not throttle. any ideas… read more
Charles
Charles
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My alarm goes off when I start off. It might do it one more
My alarm goes off when I start off. It might do it one more time with a start. Does not go off any other time. I replaced the water pump 2 years ago when the alarm was actually shutting down the motor… read more
Charles
Charles
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I have a 2005 mercury 175 sport jet in a 2005 thunder jet boat
I have a 2005 mercury 175 sport jet in a 2005 thunder jet boat my problem is the alarm for the temperature gauge starts sounding off at 150 degrees and my gauge goes up to 250 degrees. I could underst… read more
Charles
Charles
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2004 mercury 150 optimax. Getting false readings and alarms
2004 mercury 150 optimax. Getting false readings and alarms for no oil and overheating. engine shuts down to idle. Smartcraft display ALWAYS shows 32F for temp. and 0.0 psi for oil. Other aspects of S… read more
Charles
Charles
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Mercury 135 optimax idles fine but if I try and go fast the
Mercury 135 optimax idles fine but if I try and go fast the continuous alarm will sound and the engine looses all power even at full throttle. Good stream of water coming out of the engine suggesting … read more
marinedoc
marinedoc
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i am buying a 2005 Boston whaler with 150hp Optimax Mercury
i am buying a 2005 Boston whaler with 150hp Optimax Mercury motors any feed back re motors… read more
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My Mercury OptiMax 150 - Smart Craft Alarm is sounding. I have
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Mercury 150 hp Optimax I have a 150 HP Optimax ( year 2000
I have a 150 HP Optimax ( year 2000 ) that blows the warning whistle and shows a hot light on the idle out. Yet it is not hot. If I turn the key off and then immediately restart the engine, it will id… read more
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After realizing too late what that alarm meant when i turned
After realizing too late what that alarm meant when i turned the ignition on, it meant low oil, I continued to run my twin Mercury 150 optimax engines for several hours. Do they cut off when the oil i… read more
Scott
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merc optimax 150 year 2000. The problem is I have no power
merc optimax 150 year 2000. The problem is I have no power when the alarm is on. I don't know if the alarm is for oil or overheating. Checked water coming out of motor is okay-no overheating. The moto… read more
ROCKET
ROCKET
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I have a 1999 mercury optimax that shows a gasoline alarm ...
I have a 1999 mercury optimax that shows a gasoline alarm when I start it. Ther is pleanty of gas in the boat. Is this a water alarm from a filter? If so where is the filter… read more
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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