I have a 2003 FX cruiser that is constanly overheating only under load. Has anyone else had this problem. Not sure if the temp sensor is bad or if something else is wrong. It seems to run fine for a while and then die.
Are you getting water out of the port side cooling port when the engine is running? You may have debris in the cooling system. Have you checked to see if you are getting any error codes. On my ski you hold down the 2 buttons on the left side of the panel for 8-10 seconds, on others hold down the "select" button for 8 seconds to see if you get an error code (15 is a malfunction of the temp. sensor on my FX HO).