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  1. #1
    yamacruiser's Avatar
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    Apr 2012
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    2003 fx will not start

    Hello everyone, I have a issue with my 2003 yamaha fx 140. It was working fine and suddenly it just decided to stop turning on. I have checked per owner manual the start/stop switch,the starter relay, the fuses, the battery is at 12.56 volts. I push the start button and nothing happens.

    Before it went dead completely i had start it up and suddenly it shut off on me, i restarted it again and it shut offwithin a second or two. Then i started it up again and it stayed on. The following day i went to see if it was doing the samething and nothing would happen once i hit the start button.

    Can anyone point me at the right direction thanks.


  2. #2

    Join Date
    Sep 2012
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    Raleigh, NC
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    I had a problem similar to yours
    mine was caused by a bad wiring harness....
    could be a ground also

  3. #3
    yamacruiser's Avatar
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    I fixed it already, dirty battery post, the funny part is that they dont have any debri on the post. Got a wire brush and brushed the posts good. Starts up like a champ

  4. #4

    Join Date
    Jun 2017
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    Lakeport California 95454 by clearlake
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    Have 2003 fx140. Cranks won't start. Went through forum on Friday , did all suggested checks, vault so on. I'm a 24 year master certified GM technician, diagnosing for a friend. Looks dry in vault, has crystallization on back of what we call pcm is this an issue? Mainly i recall in reading on Friday to disconnect tps & see if have spark, answer is yes, good spark all 4 cylinders. But i forgot what you said from there and when I say you, there is some dude on this forum answering that knows his shit, just like i do with cars. Have a feeling this is telling me what is at fault. FYI spark goes by by when I reconnect tps. Where do I go from here?

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