Check Engine

I

Irish Mist

Well-known member
Joined
Apr 25, 2012
Messages
1,175
Fluid Motion Model
C-288 C
Hull Identification Number
FMLT2922K011
I had my check engine alarm go off on start up this morning..display had a whole list of problems it could have chosen but just settled on the one that said check engine. All vitals looked normal so I let it idle to normal operating temp.. After two re starts it went off.. I checked for codes in the display and nothing .. Does anyone know if the Yanmar ECU clears codes after successful restart x 3 ?
I took her out for an hour or so and tried to beat her up with high speeds and slow speeds and everything in between but no more alarms .. I'm not a fan of the system self fixing as there must have been something it wasn't happy with . I am going to change fuel filters in case they may have caused a high / low pressure problem , other then that I am stumped
 
I have the exact same thing going on right now. I haven't tried three restarts yet, but will try that tomorrow. Please let me know if you find out anything more. I have a call in to the Anacortes Yanmar service center to come to the boat, but they are busy for the next several days. I'll let you know if I get any answers from them.

Brad
 
The Garmin will hold the history of errors. I sometimes get an alarm of low battery voltage when I start cranking.

I posted this earlier, make sure you have good connections from the battery to the ECU. Poor connections can cause erroneous errors. On my boat there is a positive and negative that go straight from the engine battery to the ECU. Make sure they are clean and tight. I also ran a second ground wire from the engine battery to the engine block. The one that Ranger installed goes through several connections and then to the ground block before it goes to the engine.
 
So check engine comes on as soon as I turn key on and stays on .. Usually goes off after glowing engine ..10 sec or so .. So I'm thinking is either glow plug or loose wire .... I was able to get two codes.. P650 which is check engine lamp and P 675 which is a glow plug.. So wiring and glow plug ..
 
I believe the yanmar has a glow plug module that should be disconnected. There was a thread on this awhile back. Try searching "glow plug".
 
Yes, it sounds like the glow plug issue. You are in cold weather and they should be heating, but are not there, but the module probably is. Take it out and you should be golden. If I am not mistaken you can warm up the engine to operating temperature, shut it down and then restart and you won't have the alarm. That would be further proof that it is the glow plug module syndrome.
 
Thanks everyone and Jim Favours who was also following up behind the scenes with his experance. I disconnected the unit and all seems fine now .. Alarm gone.. That fixed the alarm but really bypassed the problem.. I'm guessing I need to replace the glow plug on #5 .. Lucky there is a BMW dealer very close and the parts girl is very helpful so I will try later extracting a glow plug and see if she can match it up. I feel it's got to be like the oil filters and a lot less expensive from BMW. If they are reasonable I will do them all while I have the hood up 🙂
 
The Yanmar service tech in Anacortes came to my boat this morning, and says I need to replace the number 2 glow plug. I only have 500 hours on my 2012 R-29, and it seems to me that they should last 3 or 4 times that long. I also see from some of the responses here that there may not even be any glow plugs installed. How can I check that.

Thanks,
Brad Owens
 
It is really easy to just disconnect the module and make it all go away .....It is on the port side just under the computer Plugs are facing the bow . The unit is about 3 inches square and about an inch thick.. Reading the posts it seems the glowing is not needed... These newer engines start pretty good I know my truck has been pretty cold and has started with out using the glow plugs when I was in a hurry once and forgot
Good luck
 
Questions if I may....
What does a glow plug look like ?
Aren't they manually activated from the ignition switch?
Is there a critical temperature when they are needed?
If the engine starts without activating them, are they really necessary ?
 
A glow plug looks similar to a spark plug. They are often needed in cold weather to get the chamber warmer and aid in initial combustion. They normally will go on with the turn of the ignition switch.
 
The service manual states that the engine will meet California Emission Standards without the glow plugs. If you disconnect the controller you may need to disconnect the negative lead from the CPU to your battery. I lived with the alarm until I removed all of the batteries for replacements and cleaning resulting in no power to the CPU so it reset. The controller looks for the glow plugs until engine temperature reaches 120 degrees F. At that point restarting eliminated the alarm until my power down caused the CPU to "reset" and the alarm was permanently eliminated. Unplugging the glow plug controller is described in earlier post. I would add that you should seal up the connectors to prevent moisture issues in case you want to reconnect at a later date.

Pat
Ladybug, Too
 
You must log in or register to reply here.

  • Tugnuts.com is the community hub for Ranger Tug, Cutwater, and Solara owners. Since its inception in 2008, the Tugnuts forum has grown into an active and thriving community of more than 9,000 members. It serves as both a meeting place for the best boating community online, and an invaluable archive of information.

  • User menu
Back
Top