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2006 F90 Fuel Injected Outboard Problem

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  • #1

    2006 F90 Fuel Injected Outboard Problem

    I have a 2006 F90 Fuel Injected 4 stroke outboard that will start up and immediately die. If I pull up the high idle lever it will run fine but will die out as soon as I put it down. The motor is on a 30ft pontoon and is too big for me to take somewhere and there isn't anyone around that will come out and look at it. Does anyone have any suggestions?


    Thanks
    Tags: None
  • #2
    Check the wiring to the ISC valve. Also, inspect the integrity of the wire to socket connections within the electrical connector that attaches to the connection point on the ISC valve.

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    • #3
      and remember, mechanics also like money.
      offer me enough and I am on my way.
      same with your local techs.

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      • #4
        Is the ISC part number 6D8-13105-01?




        I guess 75.00/hour plus drive time isn't enough around here.

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        • #5
          Ah, the joys of owning a large boat!

          Where is here?

          Some mechanics don't like to work away from a shop. Hard to take all of your tools and diagnostic equipment with you. What ever gets taken is oft times not that which is needed. Back to the shop. Maybe several times. Mechanics like to be fixing stuff. Not driving.

          Shop rates can be north of a hundred bucks an hour in some places. Somebody has to pay for a shops time. Not unheard of for a mechanic to make a two hour round trip, only to find that all was needed was to disconnect and reconnect a connector.

          Ask around on your lake if anyone has used a mechanic that makes house calls.

          Yes, that is the ISC valve. Do a visual on the wiring. It is a known hotspot.

          Good luck.
          Last edited by boscoe99; 03-24-2015, 09:56 AM.

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          • #6
            OK I found a broken wire at the connection plug. I repaired it and still getting the same thing. Is this going to be one of those deals where I have to replace the entire wiring harness or do they have a fix?

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            • #7
              who is they?

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              • #8
                Originally posted by AverageBob View Post
                OK I found a broken wire at the connection plug. I repaired it and still getting the same thing. Is this going to be one of those deals where I have to replace the entire wiring harness or do they have a fix?
                Carefully inspect the other wires as well. Maybe do a continuity test to verify you have a good electrical connection to each pin. All the way back to the ECU if possible. I hate to suggest stabbing a wire with a needle probe but sometimes you gotta do what gotta be done.

                Yes, they have a fix. The fix is to replace the entire wire harness. Yamaha does not offer spare pins, sockets or connectors.

                They being Yamaha US.

                This place might be able to provide another connector and set of sockets.

                Sealed

                If the electrical connections to the ISC valve are correct then I don't have any more ideas.

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                • #9
                  Thank you. You have been very helpful.

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                  • #10
                    Prognosis??

                    Hi Boscoe99.
                    I am having exactly the same problem and was wandering you could let me know what the problem was??
                    Thanks

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                    • #11
                      Sorry Boscoe99, I meant Average Bob

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                      • #12
                        not to bring up a dead thread but for future reference anyone that comes across this YOU CAN GET THE TERMINALS AND CONNECTORS to bypass the harness so you don't have to buy a new whole new one

                        http://www.yamahaoutboardparts.com/f...s-th26990.html

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