So I have 2008 sea Ray 175 with the mercruiser 3.0 alpha one. It has been great since I bought it in June. Well today, I took it out (we've had it out every weekend) and it started just fine, but once we got going down the river things changed. All of a sudden it felt like someone was pulling on the boat and I lost my power steering. Then the horn warning starting going off. My engine was at 170! I shut it down and started inspecting. First, power steering fluid seemed empty, engine oil may have been slightly low, and gear drive reservoir was fine. Well we get it back to the dock and the outside seems fine. I decide to top off the fluids so I added 2 qts of oil and some power steering fluid. I get it back on the water and the temp gage keeps swinging. It would read 135 and up to 190. So know j think maybe the impeller, but j have no clue. We rode it easy down the water, stopped and came back. Anyone know what may be wrong? Is the power steering issue causing the temp swings or is the high temp causing the power steering to shut down? I may just take it into the shop in Monday, but j really hate paying the high labor costs. Thanks everyone