98 P200 tlrw

[sapps1234]

I have a puzzling problem and hopeful you all can help me. when i turn the ignition to the "ON" position the overheat light and buzzer come on. this just started a few weeks ago I just replaced the impeller which was bad (the pictures on this board help a lot). now there is no way it could be overheating since it was never running. after a few minutes the buzzer will stop and light will dim. I am thinking it may be the thermosensor. If it is how do i check this. any help is greatly appreciated. after replacing the impeller i place the "EARS" and water hose to the water pickup and ran the motor now i do not have any water pressure on my gauge.

Thank you

what I mean by not running is it is cold, the motor will start and run fine.

[boats.net]

Did you change any wiring on engine? Might recheck all the wiring and wiring going to gauges.

[sapps1234]

no wire changes were made. just replaced the impeller. I went to a Yamaha dealer to seek assistance, they think it may be the ignition switch went bad.

[sapps1234]

what are the steps to check the ignitiion switch.

[boats.net]

Either try another switch or disconnect wiring from switch and do ohm checks on each circuit of switch.