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  1. #1
    Join Date
    Jul 2021
    Posts
    100

    Default Throttle/Speed Surging - 2022 Kaiyen - GPS Issue?

    Anyone have this issue?

    Here's what's happening. I get everything set to surf. Ballast full, ZeroOff set, etc. Hit the throttle and once up to speed, the engine starts reving up and down, and speed on the dash screen starts cycling up and down by about 1mph.

    Here's where it gets interesting. If I back the throttle off the engine stops surging but the speed in the dash keeps cycling up and down even though my speed is consistent.

    Only thing I found to fix it is to turn off the engine and cycle the battery.

    Bad GPS unit? I'm super confused.

  2. #2
    Join Date
    Jun 2020
    Location
    Reno, NV
    Posts
    741

    Default

    The common theme as of late with the electronics of newer boats is to check for a loose ground. Trace the receiver wire to the ground buss bar it’s tied into and check the connection. Check the grounds on your batteries and any other ground distribution busses.

    If it’s not that, then I would say a new GPS receiver is in your future.


    2022 SA 450
    2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
    2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)

  3. #3
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,953

    Default

    Go see SSurfer 321 post here.

    https://r.tapatalk.com/shareLink/top...ink_source=app

    Yes, 2in is right about grounds making anything electronic act funky. My sons 2016 Dodge Dart all of a sudden started having intermittent flashing of his digital speedo, and his radio/ac/everything control display panel, would go blank. Ended up being that the ground terminal on the battery was slightly loose. And I mean slightly! Apparently electronics these days are very ground sensitive.

    Sent from my SM-G781V using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  4. #4
    Join Date
    Jan 2021
    Location
    Columbus, Ohio
    Posts
    1,251

    Default

    ^^^ This.

    Loose grounds will mess with everything.
    2015 Moomba Mojo Surf Edition
    4,000lbs
    Manual Flow

  5. #5
    Join Date
    Jul 2021
    Posts
    100

    Default

    Checked bus bar and battery terminals. All solid.

  6. #6
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,953

    Default

    Quote Originally Posted by WildH View Post
    Checked bus bar and battery terminals. All solid.
    Bummer! Was hoping you would find an easy fix to it.

    Sent from my SM-G781V using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  7. #7
    Join Date
    Jun 2020
    Location
    Reno, NV
    Posts
    741

    Default

    Only thoughts at this point are to check the connections between the puck and ECM. Otherwise, sounds like a warrantee issue.


    2022 SA 450
    2020 SA 450 Wife calls it White Cloud. Said it makes her feel "Classy"
    2017 Sanger V215sx. We call it Viagra because it's the little blue pill that gets everyone up (Sold)

  8. #8
    Join Date
    Jul 2021
    Posts
    100

    Default

    Quote Originally Posted by HFarr View Post
    Bummer! Was hoping you would find an easy fix to it.

    Sent from my SM-G781V using Tapatalk
    Me too!

    Worked fine today though. So that's good.

  9. #9
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    1,953

    Default

    Maybe checking all the connections actually moved something that was loose back into contact.

    Sent from my SM-G781V using Tapatalk
    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds bow speakers & 10's on the Tower & ported sub

  10. #10
    Join Date
    Jul 2021
    Posts
    100

    Default

    Quote Originally Posted by HFarr View Post
    Maybe checking all the connections actually moved something that was loose back into contact.

    Sent from my SM-G781V using Tapatalk
    Maybe... But it's been doing it since day two so will have to see. It's intermittent. If it happens again, I'll record it so I have some proof. Otherwise could be one of those 'we can't get it to replicate' things.

    Love the boat otherwise!

    20220708_194205.jpg

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