Transmission, electrical, or engine issue???

[15edwardsh]

My mom has a 2007 Ski Nautique, not exactly sure the model but probably the 220.

When going over 10 mph the engine will just cut out and if I push the knob/lever/gas a hair more it will start going 22+mph.

The more we use it the more i find that its incredible rare to have the boat go 15-20mph normally.

I usually just end up using cruise control, but it's pretty annoying to drive like that as water is versatile.

It's been to the local shop where it's stored but they don't know whats wrong or care imo.

Anyone know what could be wrong? Boats gonna be back out in the water in a couple weeks and i'm done driving it if I can't control how fast it goes.

[James]

To be clear... I am assuming your mom has a Super Air Nautique 220 with a V-drive (engine in the back) as apposed to a Ski Nautique 196 direct drive (engine in the middle). Either of those boats would very likely have a 5.7 liter 330 hp Excalibur or a 6.0 liter 375 hp. Look at the plastic red shroud on top of the engine and the answer will be there. None the less, both engines are “drive by wire”. If the engine is otherwise generally running well and has been maintained your problem is not too uncommon. Turn the Perfect Pass (cruise control) OFF. Assuming you do not have smooth steady acceleration from idle speed all the way through WOT and/or do not have the ability to maintain RPM’s at a specific speed (in your case 15-20 mph) you most likely have a problem with your TPS (throttle position sensor). It presents as a “dead spot” in the RPM range. If you are trying to drive the boat (accelerate/decelerate) with the Perfect Pass ON then you have a different problem. That being said it is a very easy fix. With the engine OFF remove the red shroud from the top of the engine. Have a friend move the throttle forward/backward (it doesn’t matter if the boat is in gear or in neutral for this exercise) as if they were driving the boat and accelerating/decelerating. Observe the throttle cable end on top of the engine. It will be moving a lever attached the a plastic black part with a wire plugged into it. That is the TPS. Unplug it/unbolt it and replace with new. Problem solved. Let me know if I am missing something in your description of your problem. FYI... NautiqueParts.com will have the part. You just need to know the engine.

[James]

https://www.nautiqueparts.com/produc...ometer-assy-2/

This is the NautiqueParts.com link for the part you will likely need. Part # R119005A

[Dlandry]

Hi, new to forum. Own a 2004 SANTE and noticed this past weekend that our oil pressure gauge and speedometer were not working! All other gauges seem to be working fine. Manually checked oil level and noticed it was OK! Any suggestions?

[James]

There is a ton of information on this site pertaining to your gauges. Under Maint/Tech Discussion click on the sticky “Repair for Dead Gauges on 2003-2006 Nautique’s Caused by Bad Faria Gateway”

[Dlandry]

Thanks. Just found that info!

[15edwardsh]

Thanks, i'll let you know how it goes once we get the boat in the water.

[15edwardsh]

To be clear... I am assuming your mom has a Super Air Nautique 220 with a V-drive (engine in the back) as apposed to a Ski Nautique 196 direct drive (engine in the middle). Either of those boats would very likely have a 5.7 liter 330 hp Excalibur or a 6.0 liter 375 hp. Look at the plastic red shroud on top of the engine and the answer will be there. None the less, both engines are “drive by wire”. If the engine is otherwise generally running well and has been maintained your problem is not too uncommon. Turn the Perfect Pass (cruise control) OFF. Assuming you do not have smooth steady acceleration from idle speed all the way through WOT and/or do not have the ability to maintain RPM’s at a specific speed (in your case 15-20 mph) you most likely have a problem with your TPS (throttle position sensor). It presents as a “dead spot” in the RPM range. If you are trying to drive the boat (accelerate/decelerate) with the Perfect Pass ON then you have a different problem. That being said it is a very easy fix. With the engine OFF remove the red shroud from the top of the engine. Have a friend move the throttle forward/backward (it doesn’t matter if the boat is in gear or in neutral for this exercise) as if they were driving the boat and accelerating/decelerating. Observe the throttle cable end on top of the engine. It will be moving a lever attached the a plastic black part with a wire plugged into it. That is the TPS. Unplug it/unbolt it and replace with new. Problem solved. Let me know if I am missing something in your description of your problem. FYI... NautiqueParts.com will have the part. You just need to know the engine.

You were exactly correct, thanks you.

[James]

Glad to be of help. I hope you didn’t lose too much time on the water.