Okay I have ruled out fan control module the fan does come on regularly. Sometimes i think it should kick on a little sooner. Anyway I drove 60 miles then started climbing a steep grade sure enough my temp gauge went up to 3/4. Turned the heater on to cool it down. My fan will kick on when I am ideling after getting warmed up. I do think the the fan is working so could it be a plugged radiater, or can you get a more sensitive temp sensor so the fan kick on sooner. My options?