In Reply to: Re: spoke to soon posted by lonestarjeff on August 09, 2018 at 08:37:08:
I had a boat motor once that kept overheating at medium speed. I replaced the t-stats twice and it still did the same thing. I then realized that the new t-stats were just a little different then the original ones. I had also replaced the water pump so there was not much left to try. I ended up drilling holes in the new t-stats to allow more water to flow thru at low speeds and at low temps. This fixed the issue.