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  1. #1
    toolman11K's Avatar
    Join Date
    Jul 2008
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    Big Lake, MN
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    Looking for a ECU for a 2008 Speedster - old # shows 664946

    I have one engine that won't start, the solenoid does not seem to work, I switched solenoids between the 2 engines, no luck, I checked all fuses, all good, pulled the ECU of the engine that won't start, and plugged it into the one that runs, and it does not run.

    I am not sure if plugging the running ecu into the non-running engine is a good idea, or just buy another ecu, as I assume this one is bad.


  2. #2
    switch ecu to do the check... I have a feeling that isn't your issue..

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  4. #3
    Water4fire's Avatar
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    Quote Originally Posted by 99spxxx View Post
    switch ecu to do the check... I have a feeling that isn't your issue..
    He did this already by putting the bad ECU on the good engine. If his Good running engine doesn't run with the bad engine ecu than that's a good swap IMO. But yes I believe he needs to swap good ECU to bad engine and make sure 100% the bad engine starts.

    You can switch the ECU for sure they are the same thing. So don't worry, Just make sure not to put a 2004 05 or 06 ECU in it. They are different than the 2007 to 2010.

  5. #4

    Join Date
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    Boats are behind a year. The 664946 is a 2006 215hp ECU. I have a 2007 215hp boat and it has the same ECU.

  6. #5

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    I have a couple of those boat ECUs if interested

  7. #6

    ECU for 2006

    Quote Originally Posted by Spanners View Post
    I have a couple of those boat ECUs if interested
    Do you have the 664946? I need an ecu for a 2006 rxt. how much??

  8. #7

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    I have 2x that ECU and also a RIVA one for 06

    I wont be able to get to the 66946 for about 4 weeks
    The RIVA can come with injectors and be shipped immediatly

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