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    1992 Nissan NS90A alarm at low speed, Dies above 3/4 Throttle

    Here are my latest findings: I bought a good used voltage regulator on Ebay for about $40. It is not the same as the old one, but the wires and connections are identical. The Tohatsu catalog shows this part has been upgraded, and that looks like the one I got. So far the charging voltage...
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    1992 Nissan NS90A alarm at low speed, Dies above 3/4 Throttle

    So here is my latest update: I found that the charging voltage is low, about 12.3VDC at idle to 12.6VDC at 1500 rpm. The voltage from the stator to the regulator was 20VAC at idle and 30VAC at 1500-2000 RPM. Maybe not my primary issue, but certainly an issue. Voltage regulator on the way. Could...
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    No telltale Nissan 90hp

    You can pull the thermostat housing and see if water is flowing up through the motor. I just did that on my motor (same 90 Nissan). I had this issue last year, it was a spider nest in the telltale hose out of the motor. But water through the thermostat housing would indicate whether water is...
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    1992 Nissan NS90A alarm at low speed, Dies above 3/4 Throttle

    Well, if you learn anything about the issue please share. I am waiting on parts right now. Also just learned that the thermostat is discontinued from Tohatsu. I did order the thermostat from the next (newer) model variant of the motor. the part number was only one character off. Hopefully it...
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    1992 Nissan NS90A alarm at low speed, Dies above 3/4 Throttle

    I have a 1992 Nissan 90 HP outboard. Lately it has been having issues with running with the boat on plane, anything above 1/2 to 3/4 throttle will kill the engine. It acts like it has the fuel cut out. bogs and stalls. It can sometimes recover by returning the throttle to neutral, sometimes it...
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