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  1. #1
    PWCToday Guru Rconce01's Avatar
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    Blown fuse 5amp on MPEM 94 seadoo xp

    I'm working on this ski that sat for a long time I got it to start up but after a couple minutes completely died. Now it keeps blowing the 5amp fuse. So far from what I gathered it can be the inductive coil the magneto or a Bad MPEM. Can a VTS issue cause this fuse to blow consistently as soon as the battery is connected?

  2. #2
    PWCToday Guru Bionic racing's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Have good MPEMs if needed

  3. #3
    PWCToday Guru Rconce01's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Cool I need to see if it's the MPEM first. Do you have fuel pump on the 657 carbs? I need that for sure.

  4. #4
    PWCToday Guru Bionic racing's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Plenty of that stuff , scraped out 5 657s last year

  5. #5
    PWCToday.com Is My Home Away From Home Grumpy Old Guy's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    You need a new MPEM.

  6. #6
    PWCToday Guru Rconce01's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    I can swap one of the other ski since it's a pair. How can I know that whatever cause the failure won't fry the other MPEM? Is there a way to test for sure it's the MPEM?

    I read something about disconnecting the yellow wires and then the red wire

  7. #7
    PWCToday Guru Bionic racing's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Sounds like your disarming a bomb on a movie , just don't cut any wires

  8. #8
    PWCToday Guru Rconce01's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Pm sent

  9. #9
    PWCToday.com Is My Home Away From Home Chester's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Quote Originally Posted by Grumpy Old Guy View Post
    You need a new MPEM.
    I agree.

    Quote Originally Posted by Rconce01 View Post
    I can swap one of the other ski since it's a pair. How can I know that whatever cause the failure won't fry the other MPEM? Is there a way to test for sure it's the MPEM?...
    You need an MPEM. Remove the MPEM and test for continuity between the 5 amp fuse and a ground wire coming from the MPEM. There should be no continuity.

    Chester
    Speed is very expensive. How fast do you want to spend?

    Stand up:
    98 SXi-Pro

    Couches:

    96 XP
    86 X2

  10. #10
    PWCToday Guru Rconce01's Avatar
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    Re: Blown fuse 5amp on MPEM 94 seadoo xp

    Quote Originally Posted by Chester View Post
    I agree.



    You need an MPEM. Remove the MPEM and test for continuity between the 5 amp fuse and a ground wire coming from the MPEM. There should be no continuity.

    Chester

    Thanks im checking it out tomorrow and will report back what i find

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