I have 1989 Johnson 175 GT without the motor running when I turn the key on the alarm will beep every 15 Sec. Then while the motor is running the same thing happens 1 beep evry 15 sec. Also went on a test run last Sat and ran over 3 miles alarm did not sound then went to the lake on Sunday went 500 yards the alarm sounded a steady beep. Went Monday no alarm allday. Took both T stats out and tested them both opened at around 150. Put muffs on the motor with out T stats in noticed right side was pushing more water out then Left side. Can anyone help please I'm lost.