Recently my XR6 150 serial number 1B191100 has developed a problem. The overheat alarm comes on when idling and it also sounds louder then before. I also noticed sometimes when I shut it off I can still hear what sounds like something still turning? I hear a click, click, click, click, click, click sound with each click getting quieter and quieter until it stops. I hear this sound after I turn the key to shut the motor off so the motor isn't running when I hear it and it doesn't do it every time just sometimes. Last year I had it in the shop with JOE54 and he had it running GREAT. He replaced the water pump and fixed other problems but I do remember him telling me the exhaust tuner was loose at the time but he was able to get a long extension and tighten it up. I'm not sure what's going on with it but I plan to start by replacing the water pump again as well as the thermostats so I need the part numbers so I know exactly what to order. I forgot to mention I do have a water pressure as well as a temp gauge and sometimes it seems the alarm will go off before my gauge even says it hot and while I have pressure. I noticed a couple times when idling when I looked down and had zero water pressure but I goosed the throttle and it came back up... Thanks in advance for any info. I did pm JOE54 but I think he takes a break this time of year for deer hunting so waiting to hear back from him. I may have to drive it back to him to fix again but if it's something I could do myself I'd rather do that. That Man is the shiznit when it comes to these motors. He knows these things inside and out like the back of his hand!