Hi ,read through as much as possible on fan not cycling on and off and can not figure out my problem . New thermostat ,no change ,new temp sensor on cylinderhead ,no change , old rad had a bend on bottom so replaced rad and hoses with a good clean rad.new antifreeze .fan cuts in and will not shut off unless i turn the key off and then it shots off .If i disconnect the temp sensor the fan cuts in as it should if i put a little cold water on the old or new sensor the fan will shut off . the machine does not seem to be running hot and i can feel the temp change in the rad and the hoses as the thermostat opens and closes . when i throttle i can see the rad hose neck drop and seems like good circulation . It seems to me that the thermostat is set at a higher temp than the fan so the fan will always run . never checked the resistance the switch but new and old switch are working the same .hot light is not flashing . I can feel the right side of the rad getting hot then cooling off .Any suggestions would be appreciated ,thanks.