today while cutting my engine temp alert went off. i figured my radiator needed to be blown out, so i did so. problem fixed, than about 2 hours later the same thing again. i blew it out again , but right afterwards the motor got hot again. i then called my local deere dealer and they said it could be a thermostat. i installed the thermostat and it did not fix the problem. now i am wondering if it could be the sending unit or the electrical plug for it. also, when the temp gauge was showing HOT, i could go back and put my hand on the radiator cap. it sure didnt seem too hot for "overheating" . anyways, i am gonna try a new sending unit in the morning, but if anyone else has any ideas please let me know.