Mercruiser Fault Codes??
06-07-2019 | 05:26 AM
#71
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thank you for your quick reply, and for sharing your knowledge. Yes it beeps solid and loud when it senses fault. Like I say only does it around 30
It all started when my niece took it from around half throttle to almost full throttle all at once.
the pre check always checks good when key is first turned on.
It it sounds like I might be looking for a needle in a hay stack if there is several things it could be such as sensors, and loose wires.
06-07-2019 | 10:33 AM
#72
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Joined: Jul 2011
Posts: 9,594
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From: Ft. Worth TX
Have to say in your case I am not trying to pin point your problem without hands - eyes - ears and proper tools on your engine to properly find out and fix correctly whats wrong. Like I said you have issues as to why a solid horn is going off. As a TOTAL GUESS on my part --- possible would be water pressure too LOW that is one issue but in most cases there is more than one issue with used boats. The older the boats always seems more things need to be address especially with marine efi engines.
A solid horn is a HARD WARNING. On the forums if one would have that magic crystal ball to fix marine apps and pin point the exact problems would be wonderful but that does not exist. It is very POSSIBLE if you keep running your boat that your 2 week wait might turn into 2 years because of engine damage. If in fact you really do have a low water pressure warning and or more faults taking place -- hence - the guardian mode - possible you can overheat the engine inwhich can become very expensive .
You are located where ? in the USA ?. IMO best for you is to take your app into a very good OEM certified shop. This is prob the best advice instead of throwing darts at it hoping it gets fixed. That is a total waste of time and money. Im in Texas if a fix is needed. Good luck
A solid horn is a HARD WARNING. On the forums if one would have that magic crystal ball to fix marine apps and pin point the exact problems would be wonderful but that does not exist. It is very POSSIBLE if you keep running your boat that your 2 week wait might turn into 2 years because of engine damage. If in fact you really do have a low water pressure warning and or more faults taking place -- hence - the guardian mode - possible you can overheat the engine inwhich can become very expensive .
You are located where ? in the USA ?. IMO best for you is to take your app into a very good OEM certified shop. This is prob the best advice instead of throwing darts at it hoping it gets fixed. That is a total waste of time and money. Im in Texas if a fix is needed. Good luck
Last edited by BUP; 06-09-2019 at 10:13 AM.
06-08-2019 | 01:02 AM
#73
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Joined: Jun 2019
Posts: 6
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Have to say in your case I am not trying to pin point your problem without hands - eyes - ears and proper tools on your engine to proper find out and fix correctly whats wrong. Like I said you have issues as to why a solid horn is going off. As a TOTAL GUESS on my part --- possible would be water pressure too LOW that is one issue but in most case their is more than issue.
A solid horn is a HARD WARNING. On the forums if one would have that magic crystal ball to fix marine apps and pin point the exact problems would be wionderful but that does not exist. It is very POSSIBLE if you keep running your boat that your 2 week wait might turn into 2 years because of engine damage If if in fact you really do have a low water pressure warning and or more faults taking place -- hence - the guardian mode - you can overheat the engine that can become very expensive .
You are located where ? in the USA ?. IMO best opinion for you need is to take your app into a very good OEM certified shop. This is prob the best advice instead of throwing darts at it hoping it gets fixed. That is total waste of time and money. Im in Texas if a fix is needed. Good luck
A solid horn is a HARD WARNING. On the forums if one would have that magic crystal ball to fix marine apps and pin point the exact problems would be wionderful but that does not exist. It is very POSSIBLE if you keep running your boat that your 2 week wait might turn into 2 years because of engine damage If if in fact you really do have a low water pressure warning and or more faults taking place -- hence - the guardian mode - you can overheat the engine that can become very expensive .
You are located where ? in the USA ?. IMO best opinion for you need is to take your app into a very good OEM certified shop. This is prob the best advice instead of throwing darts at it hoping it gets fixed. That is total waste of time and money. Im in Texas if a fix is needed. Good luck
I actually really need to go see a friend in Houston this summer
thx, I just got boat. I don’t know if any shop here is worth a crap or not.
It hasnt ran hot, temp gages stay the same
or are you referring to water pressure as in propulsion pressures?
i have been doing so reading on this, I need to check my drive unit lube.
I just found a mercury app that claims to be capable of me being able to send engine vitals and numbers to my mechanics phone.
If if this is possible, and you think it could give you info you need. Would you mind if we swapped numbers and I could pay you through Apple Pay or pay pal
im fairly decent at working on what ever I need to fix, im just totally new to inboards. I
06-08-2019 | 01:04 AM
#74
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Joined: Jun 2019
Posts: 6
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i am in Tennessee, what part of tx are u located? I do rode trips,
I actually really need to go see a friend in Houston this summer
thx, I just got boat. I don’t know if any shop here is worth a crap or not.
It hasnt ran hot, temp gages stay the same
or are you referring to water pressure as in propulsion pressures?
i have been doing so reading on this, I need to check my drive unit lube.
I just found a mercury app that claims to be capable of me being able to send engine vitals and numbers to my mechanics phone.
If if this is possible, and you think it could give you info you need. Would you mind if we swapped numbers and I could pay you through Apple Pay or pay pal
im fairly decent at working on what ever I need to fix, im just totally new to inboards. I
06-08-2019 | 12:08 PM
#75
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 45
From: Ft. Worth TX
Thanks but really hard to properly fix boats over the phone and net. most used boats I find have multiple things need addressing. Also it would be wise to water test the boat - run it thru its paces to help find issue(s) and water test fully after the fix ( all done with proper tools and testing methods - That way its a 4 sure fixed boat when it leaves. . Plus water testing and under load of the engine is a great way to help find other issues and if any water leaks. .
Im in the Dallas area of Texas.
Im in the Dallas area of Texas.
Code Mercruiser 370 tdi
09-18-2021 | 07:32 PM
#77
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Joined: Sep 2021
Posts: 19
Likes: 5
Fault codes
Can not believe the service manual is online. Merc has been trying to get rid of all this little by little online service info as it really is copy right infringement as well. Anyways kind of not fair for the dealers who have to spend thousands for special tools and manuals and so on when a person or a do it your selfer who basically spends nothing has it at there finger tips for free. Just saying as we all like free stuff including myself.
Currently and coming within a year max - the 02 sensors pre and post are not the same. Post (rear) CAT 02 sensors are now real wideband 02 sensors. Your app being an older CAT app all 4 - 02 sensors are the exact same . just some added info
It is very important that the CAT and its space within maintains the correct amount heat on both ends - not too cold nor not too hot. For the CAT to work correctly it needs heat of 600 min to 800 degrees. With that said engine cooling is now more important than ever.
Make sure your check balls or check valves - one for each manifold and one for each riser (located in bottom of each) are not restricted nor stuck or broken apart. Also make sure the poppet valve is the same and working correctly.
Currently and coming within a year max - the 02 sensors pre and post are not the same. Post (rear) CAT 02 sensors are now real wideband 02 sensors. Your app being an older CAT app all 4 - 02 sensors are the exact same . just some added info
It is very important that the CAT and its space within maintains the correct amount heat on both ends - not too cold nor not too hot. For the CAT to work correctly it needs heat of 600 min to 800 degrees. With that said engine cooling is now more important than ever.
Make sure your check balls or check valves - one for each manifold and one for each riser (located in bottom of each) are not restricted nor stuck or broken apart. Also make sure the poppet valve is the same and working correctly.
I have a 2011 8.2 with smart craft crap I drove the boat for about an hour then hung out for about 2 then restarted the boat and got a fault code EA 118 engine sensor failure I’m thinking IAC valve but not sure I can’t find the fault codes any where any info would be greatly appreciated
