I have a 2000 Sea Ray 340 with two 7.4 engines. I went out yesterday and as soon as I got to 2,200 RPM a buzzer went off near the instrument panel. As soon as I went under 2,200 RPM it stopped. I tried again and as soon I reached 2,200 RPM it went off again. I cruised around at 2,000 for several hours and everything was fine. I found out that it was due to the starboard engine. Engine temperature and oil pressure were normal. I would appreciate any suggestions on what it could be. Thanks.