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  1. #1
    Join Date
    Jun 2017
    Posts
    5

    Default High RPMS in neutral

    I have a 2004 Moomba Outback with the Indmar Assault and when it is idling in neutral the rpms are way too high-up in the 1200-1600 range. It is always worse after the boat has been ran at faster speeds (pulling tubers vs wakesurfing). Has anyone had this issue? Any suggestions as to what could be causing this? TIA

  2. #2
    Join Date
    Aug 2011
    Location
    Commerce Lake, MI
    Posts
    2,145

    Default

    Is it the carb version? Idle air speed may need adjusting or the throttle body could be gummy and sticking open, and might need to be cleaned


    Sent from my iPad using Tapatalk
    2017 Moomba Craz

  3. #3
    Join Date
    May 2009
    Location
    North End Lake Lanier GA
    Posts
    8,155

    Default

    You might also look at any vacuum hoses. Bad hoses will cause high idle
    Malo <--- Means--Evil or Mean One. This explains a lot.
    2013 Mojo 2.5 Skylon Tower. Bestia < Beast >
    [COLOR="#696969"]

  4. #4
    Join Date
    Feb 2010
    Location
    Hartwell Ga.
    Posts
    127

    Default

    Does this happen everytime its in neutral or random?
    04 LSV

  5. #5
    Join Date
    Jun 2017
    Posts
    5

    Default

    Mine is fuel-injected.

  6. #6
    Join Date
    Jun 2017
    Posts
    5

    Default

    It happens about 80% of the time. It's okay for the first little while but the lowest
    it will go is around 1000 rpms at rest after it has been running for a little while. Yesterday it was between 1400-1600 after I had been pulling the tube.

  7. #7
    Join Date
    Mar 2014
    Location
    Park City, Utah
    Posts
    1,291

    Default

    Simple solution, stop pulling tubes!
    2017 Centurion Ri237
    2013 Supra SA450 - Sold
    2006 Mobius LSV - Sold
    2004 Stingray 190LS - Sold
    2016 Nissan Titan XD - Tow Rig

  8. #8
    Join Date
    Jun 2017
    Posts
    5

    Default

    It is fuel-injected. I sprayed the throttle body with Wd40 so I'll see if that helps cleans things up.

  9. #9
    Join Date
    Jun 2017
    Posts
    5

    Default

    Haha. The kids wouldn't be too happy with me.

  10. #10
    Join Date
    Oct 2004
    Location
    Middle TN
    Posts
    148

    Default

    Could be an IAC valve.

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