Hello all thank for looking.

I have a 2005 700 efi that will run fine for about an hour then it will just die/ shut down/ not start. All electrical systems just shut down. Give it a little time and it will start again and run fine for a little bit. Give it a day and it will start and run for an hour with no indication that there is any thing wrong, and then all of a sudden you are dead in the water. The motor runs great the battery is fine it is somewhere in the system. If anybody has an idea please respond. It seems this would be a hard problem to diagnose at the dealer because I could take it there and it would run fine for a while so they will think there is no problem. Thanks again for looking I appreciate any help.

 

Does it just stall when riding?
Do you have spark when it dies?
Is there a ECM recall for your year/model...?
Does your headlights turn on with the key JUST turned ahead?
Will it stall when the headlights are turned on?
........Caper...........

 

Ecm module does primarily charging and fan operation,but any thing possible. Fuel supply,fuel pump ok,priming up? vent not blocked? As posted above I cant positively remember,but have change several updated ecm's'also check themal fuses(in plastic pouches) if you are loosing power? Have had some corroded,shorting out. Keep trying.

 

The ECM has two solid state breakers installed inside also ...........When I turned my headlights on with my factary installed faulty ECM ...The quad would just shut off......

The second ECM(replacement new one) the fan was running all the time even with the key out.....

Now on my third one.........Caper...........

 

Everything works fine until about an hour into the ride the electrical system shuts everything down instantly. When it is running the lights, fan, fuel pump, everything works as normal. This is why this is going to be so hard to figure out. It gets ran for a while and it kills the engine the screen goes blank, no lights work the entire electrical system shuts down. Are there any hidden connections that you guys have had problems with, I have checked all I can see.

Thanks

 

did you check all conections and maybe even the grounds. did you try a search on this question? semd like i remember reading about one a long time ago that was doing it. just a thought.