kykeka <br />Cadet <br />Member # 61226 <br /><br /> posted July 08, 2005 08:55 PM <br />--------------------------------------------------------------------------------<br />I have a 1989 225 Yamaha Excel V6. It runs great up to 3900 RPM. At higher RPM (4000 -4500),it will run for about 5-10 minutes,then a steady alarm goes off and the motor starts shutting down. After 2-3 minutes turned off, the alarm goes away and all is normal until its pushed to a higer RPM over 4000.I replaced the thermostats .I can run over 30 miles at 3900 RPM no problems.All gauges are normal at time of alarms. My oil pump went bad, had oil tank removed, sensor disconnected on sub tank on engine,I mix 50 to 1 on oil, runs better than ever. Just want high RPM alarm to go away. Thanks
