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I checked in freeze frame and found these codes 9 the
Jason i checked in freeze frame and found these codes 9 the guardian, 19 max rpm 220 vent float switch, 236 emerg stop.. ok 4000 rpm is where she gives me a solid alarm and goes into limp mode .untill… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
I have a 2006 MerCruiser 350 MAG MPI Horizon Engine with a
I have a 2006 MerCruiser 350 MAG MPI Horizon Engine with a Bravo Three Sterndrive (Engine Serial 0W620281). PCM is triggering Guardian Fault around 3000 RPM consistently. Used Rinda Tech's TechMate Pr… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
Boat will not go above 3000 RPM. I have a 2013 Mercruiser
I have a 2013 Mercruiser 350 MAG MPI that will not go over 3000 RPM. I have replaced many parts and have a Rinda TechMate PRO … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
Alarm keeps going off on smartcraft gage at 3500rpm with a
alarm keeps going off on smartcraft gage at 3500rpm with a 350mag mercrusier. replaced throttle body position senor newly rebuild engine. checked smartcraft cable and most sensors … read more
Blake P
Blake P
Certified RV & Marine Technician
132 satisfied customers
I have a 2005 Mercruiser Magnum MPI with the SmartCraft
I have a 2005 Mercruiser Magnum MPI with the SmartCraft system. I get a continuous engine alarm when throttling up above 1500-2000 RPM. Alarm goes of when throttle reduced to idle. All dash gauges hav… read more
Michael
Michael
master marine technician/charter captain
Vocational, Technical or Trade Scho
256 satisfied customers
I am trying to understand the wiring system Mercruiser trim
I am trying to understand the wiring system for a Mercruiser trim limit switch. I installed a MCM 350 Mag MPI engine in my boat that has a Volvo SX outdrive. Everything works fine, except the computer… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I have an Mercruiser 350 MAG that is going into guardian mode
I have an Mercruiser 350 MAG that is going into guardian mode after running at cruising speed ( 20 MPH, 3800 RPM) for 15-20 minutes. after I slow it clears but will come back every time i get even clo… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
Status: Awaiting Expert Reply Category: BoatUnfollow Value: AU$57 SMS
Status: Awaiting Expert Reply Category: BoatUnfollow Value: AU$57 SMS Text Alerts Asked by you on Thursday, January 03, 2013 8:51 PM EST 1 Answered Question hi my name is XXXXX XXXXX would like to ask… read more
Malta Tech
Malta Tech
Marine Tech
High School or GED
287 satisfied customers
I have a 2004 Mercruiser Mag 496 with about 245 hours on it.
I have a 2004 Mercruiser Mag 496 with about 245 hours on it. Lately I have been getting 2 beeps per minute alarm. For a while the beeps stop but then come back. I connecetd a Rinda Mercruiser Scan too… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
Hello, i have a Master Miami 22 with a mercruiser 6.2 mx mpi
Hello, i have a Master Miami 22 with a mercruiser 6.2 mx mpi 2003 mod with Bravo 1 drive and a 25" mirage propeller. The engine is bougt in parts and overhauled this winter. It was earlier mounted in … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
Hi, I own a 2005 Crestliner Sportfish with 115HP Mercury Optimax
Hi, I own a 2005 Crestliner Sportfish with 115HP Mercury Optimax engine. My boat is equipped with the Mercury Smartcraft System instrument package with the Engine Guardian System. Lately, I have been … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,067 satisfied customers
350 mercruiser mag mpi. 2008. Engine mounted on a Dyno, starts
350 mercruiser mag mpi. 2008. Engine mounted on a Dyno, starts and runs great but will not accelerate past 3200 rpm. acts like a rev limiter or ?. any ideas?… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
Have a 2006 350 mag in rpm reduction, hooked up scan tool to
Have a 2006 350 mag in rpm reduction, hooked up scan tool to engine and found no codes related. Oil was about a quart low and drive fluid bottle is full. Are not getting any audible alarms - filled fl… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
we have a 2007 Mercruiser 350 mag Bravo 3 Getting codes
we have a 2007 Mercruiser 350 mag Bravo 3 Getting codes ---2 beep intermitent every 2 minutes and getting solid alarm at wide open throttle Also sea water temp is high, but engine is runnin 160-165 de… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
574 satisfied customers
I have a 4.3L MPI engine that is showing seawater pressure
I have a 4.3L MPI engine that is showing seawater pressure of around 2.5psi. When the engine reaches 3500rpm the engine guardian engages and I get an overspeed fault. The engine is not actually over-r… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
200 optimax goes into guardian and does not enter problem on
200 optimax goes into guardian and does not enter problem on comp testor. Run comp test no trouble found. Problem is not consistent but I worry if distance breakdown. Trollmotor back to ramp.… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a single MerCruiser Horizon 350 V8 petrol 300 HP (with
I have a single MerCruiser Horizon 350 V8 petrol 300 HP (with 350 careful hours on the clock) maintained by local MerCruiser dealer/mechanic since new in 2005. The motor is installed in a 2005 Sea Ray… read more
Rick Gay
Rick Gay
High School or GED
106 satisfied customers
my 250 efi wont go to full throttle and smartcraft screams
my 250 efi wont go to full throttle and smartcraft screams steady ok bellow 1/2 throttle also smartcraft rpm not right… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
574 satisfied customers
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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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