I have a 2003 mustang with 3.8 V6 and at times it over heats. I say over heats when it gets to ¾ on the gauge, normally it runs at ½. It has 130,000 miles on it and I replaced the water pump Tstat and radiator fan assy. It runs fine and then sometimes it warms up. Yesterday 100 deg outside, AC running and it would be OK and then it would start warming up. I would turn off the AC and no change, but I could turn on the heater and blower fan on hi and cool it down. Then after a few minutes I could turn AC back on and it would be OK for awhile. Also sometimes when it was warm the AC would quit working. I’m thinking it could be a faulty coolant temp sensor that is working sporadic and causing it to warm up and without the fan blowing causing high pressure in the AC and shutting it down. Sooooo what do you guys think?