Hi guys, I,ve read several of your threads and it looks like you guys have plenty of collective knowledge to help me out. I have a 1990 150 pro v that runs like a top. Problem is there is an overheating alarm that goes off if the motor is ran under about 1000 rpm for about 6-8 min. Understand that it runs great with no overheating as long as the rpm is kept from 1000-5500. I have replaced the wpump and after heating the tstats up in the wifes tea pot (she really loved that idea) they open up at about 110F so i think they are good. There wasn't any corosion around the wpump or any that i can see from the tstat housing so i think im good there. The water peeing out isn't what i would call too hot when the alam sounds. Could i have a bad temp sensor? How can i check? By the way, this engine has never seen salt water, probable explains the lack of corossion. Any ideas will be great.