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Thread: Top speed 8 mph supra 2022 SL450
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08-17-2024, 06:47 PM #1
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Top speed 8 mph supra 2022 SL450
Anybody ever had their boat not go past 8.5 MPH. Zerooff on or off no difference. No codes. Starts no problem, idles and can rev it up or down no problem but won't get up to speed. Any ideas?
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08-18-2024, 08:39 AM #2
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No codes? Can you verify that the throttle cable is opening it up all the way?
Sent from my SM-G781V using Tapatalk2021 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
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08-18-2024, 08:40 AM #3
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Will it rev up in neutral?
Sent from my SM-G781V using Tapatalk2021 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
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08-18-2024, 12:19 PM #4
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I have had the zero off do strange things like slowly count up on its own, needed to shut boat off and then fully reboot both screens before starting to correct it.
But it sounds like your condition is some sort of limp mode or throttle safety issue.
Sent from my iPhone using Tapatalk2021 Supra SA 400
2018 Supra SA 400 (SOLD)
Michigan
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08-19-2024, 03:52 PM #5
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I first thought the boat might be thinking it's following a profile that is set to a surf setting, but since it's 8.5 mph it sounds more like limp mode.
I would try a hard-reset and see what happens. If that is not working, have the dealer hook up the computer to it.2018 Supra SL400
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