1992 Mariner 150hp ser# 0D124111<br />At idle I have the beep-beep-beep alarm going off.<br />When I put in gear and run about 1500rpm it goes away. Have tried disconnecting the wires at the oil reservoir cap and it made no change. Oil level in reservoir tank is full to the top. Repalced water pump impeller,housing and all components and it runs cool. Oil level in main tank goes down so I am guessing it is pumping oil. Any help is appreciated.