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  1. #1
    I dream skis xdrian's Avatar
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    Honda ECU part number 38770-HW4-681

    Honda ECU part number 38770-HW4-681
    used 5hrs
    will fit any Honda 1300cc 4 stroke non turbo

    DSCF0091.JPG DSCF0090.JPG
    Regards Xdrian

  2. #2
    PWCToday Guru skidoc's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    What happen? why are you selling it ?
    Brian Brocksmith
    813-786-4418
    http://jetskisint.com
    Free Aquatrax Tech support
    https://www.facebook.com/pages/Jet-S...91943504243227

  3. #3
    I dream skis xdrian's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    I bought it as a spare due hard to get parts for hondas I didn't want a good ski and no ECU = no go.

    When I thought I had a ECU problem running odd every so often, I could not work it out I tryed the new ECU made no difference so pulled it back out again.

    Found the problem a crack in exhaust manifold and water coming back causing miss fire.
    Since traded in the Honda now have a Seadoo Spark so just cleaning up my left over bits.
    Regards Xdrian

  4. #4
    I dream skis xdrian's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    make a good offer need it gone
    Regards Xdrian

  5. #5
    PWCToday Newbie
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    Re: Honda ECU part number 38770-HW4-681

    Hi
    How much would be your lowest price on that? My ski won't start. Everything seems to work. Turns over, there is spark ,gas, No fault codes. I bought two new sets of spark plugs, new battery. Still nothing. When I installed the first new set of plugs it started up after a few try for a few seconds but it died when I released the throttle. Will not fire up since then. That's why I am thinking it might be the ecu (or can it be?).I pulled off the injector connectors and tried to start it a few times then a trouble code came up. When I plugged them back on , the code dissapered. That means the ecu works(I think).Checked fuel pressure (43psi). Pulled the fuel pumps fuse so it won't push gas and tried to spray starter fluid still won't start. Checked spark on all cylinders, Only "bad" what I've seen here is that if I pushed the button for a little bit longer, then the spark got weaker. But that is because of the battery gets tired I think. Checked main relay too. I Couldn't check compression yet because I don't have the 10mm adaptor for my set. But the compression should be good because it was running strong last September before I put it in the garage. Maybe valves stuck open??? I was able to start it up twice in the winter time. Now I've learned that these spark plugs don't like "short running" , and how sensitive they are. Then I just replaced them. Let me know if anybody has any idea what could be the problem. Thanks

  6. #6
    I dream skis xdrian's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    well you tried everything if your getting fuel pressure the main relay must be working for the fuel pump.

    I would do a compression test before any thing else easy check and will tell a lot my R12 was around 170psi per cyl anything over 150psi will work.

    Disconnect the voltage reg just in case its faulty letting ac over the DC side another quick check easy.

    Try easy things first.

    As for ECU I was thinking $400 US plus shipping let me know if you want it and we work out the details




    Quote Originally Posted by Atee View Post
    Hi
    How much would be your lowest price on that? My ski won't start. Everything seems to work. Turns over, there is spark ,gas, No fault codes. I bought two new sets of spark plugs, new battery. Still nothing. When I installed the first new set of plugs it started up after a few try for a few seconds but it died when I released the throttle. Will not fire up since then. That's why I am thinking it might be the ecu (or can it be?).I pulled off the injector connectors and tried to start it a few times then a trouble code came up. When I plugged them back on , the code dissapered. That means the ecu works(I think).Checked fuel pressure (43psi). Pulled the fuel pumps fuse so it won't push gas and tried to spray starter fluid still won't start. Checked spark on all cylinders, Only "bad" what I've seen here is that if I pushed the button for a little bit longer, then the spark got weaker. But that is because of the battery gets tired I think. Checked main relay too. I Couldn't check compression yet because I don't have the 10mm adaptor for my set. But the compression should be good because it was running strong last September before I put it in the garage. Maybe valves stuck open??? I was able to start it up twice in the winter time. Now I've learned that these spark plugs don't like "short running" , and how sensitive they are. Then I just replaced them. Let me know if anybody has any idea what could be the problem. Thanks
    Regards Xdrian

  7. #7
    PWCToday Guru skidoc's Avatar
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    May 2012
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    tampa
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    499

    Re: Honda ECU part number 38770-HW4-681

    Atee....

    Sounds like low compression, Give us a call I'm in tampa and can trouble shoot or repair your ski.
    Brian Brocksmith
    813-786-4418
    http://jetskisint.com
    Free Aquatrax Tech support
    https://www.facebook.com/pages/Jet-S...91943504243227

  8. #8
    I dream skis xdrian's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    still available
    Regards Xdrian

  9. #9
    Frequent Poster
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    Re: Honda ECU part number 38770-HW4-681

    Do you know if this fits a 02 F12 non turbo? I can't find the correct part number for the 02 models.

  10. #10
    I dream skis xdrian's Avatar
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    Re: Honda ECU part number 38770-HW4-681

    Quote Originally Posted by dtaylor View Post
    Do you know if this fits a 02 F12 non turbo? I can't find the correct part number for the 02 models.

    I can't say for sure but its a non turbo and for the 1300 cc motor I don't see why it would not work.

    I have cut and paste a parts listing for you maybe some one will know for sure lot cheaper than listed.


    http://www.discounthondaparts.com/fi...02&fveh=135155

    it shows first number is the original and second number is the updated part number from memory

    38700-HW2-305
    38770-HW2-682 $1,316.25 $977.32


    http://jetskisint.com/aquatrax-f12-f...units-ecm.html
    Last edited by xdrian; 08-19-2015 at 02:45 AM.
    Regards Xdrian

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