Ok heres the deal i took my boat out on Saturday and everything went well for the day. We headed back in and all of a sudden the motor went limp in to a protect mode. I first thought that it might be the impeller went out but the motor was running cool and water was coming out the exhaust. i restarted the motor and headed in all gauges were running normal so i added a little more throttle it went over 3000 rpm and the buzzer went off and right back into protect mode. I was able to get back to the dock as long as i stayed under 3000 rpm. what could this be. Any help would be great.