2003 SANTE Won't Go Past 14 MPH

[AUFan79]

Hi everyone,

I'm needing advise on my 2003 SANTE with a 330 Excalibur with 800hrs. The boat idles fine and no issues at no wake speeds, but when I throttle up I can only get to about 14 MPH. It isn't high rev'ing it just gets up to 14 and that's it. There aren't any strange sounds or feels. I'm stumped.

Oil level is fine, fuel filter has been replaced, compression is 165lbs all around, spark plugs and wires are good.

I have it out of the water now and not sure what to do next. Any help is greatly appreciated.

[bturner]

The speed control isn't engaged is it? If you have the speed set to 14 the boat isn't going to go faster than that until you disengage the speed control.

If we eliminate the speed control we're into linkage and electronic controls. Don't know if they went to "fly by wire" by 2003. If they didn't I'd be looking at the linkage to make sure you're getting full movement at the carb. If they did and you're not getting any alarms and you have RPMs that match the speed you're going to be into diagnostics for the throttle and sensors at the fuel injection. Throttle positioning sensor would seem to come to mind quickly.

[teamseal]

you are in power reduction. something has set a code so as the engine will not go over 1500 rpm. have the engine scanned for codes. check your fuel pressure also..

[AUFan79]

you are in power reduction. something has set a code so as the engine will not go over 1500 rpm. have the engine scanned for codes. check your fuel pressure also..

How can I scan it myself? I have a scanner you use on a vehicle. Will that work? I don't have a boat mechanic anywhere near me

[core-rider]

Like already said, are you sure the Perfect Pass isn't engaging?You should hear a "beep" when it engages, and see it on the dash gauge maintaining speed.

What RPMs is the engine turning when going 14MPH?

I had an issue a few years ago with a distributor cap that was in need of replacement, but I had poor running conditions and it was backfiring through the intake and exhaust because of misfires. If you don't have those issues, I'd say it's not in the ignition.

[bturner]

I was thinki9ng the same thing. If he can get the boat up to 14mph I don't think he's in limp mode. According to AI, limp mode is going to restrict rpm to 2500. No way that translates into 14 MPH.....