I don't think this is normal for my Duratech doing this, cause ever time i turn the A/C on the temp goes high very fast and the fan will stay on like normal faction. The A/C is very cold had no problem with it, and yes I flush the radiator and put new coolant in it about 1000 miles ago. Is it normal for temp. goes high like that when the A/C is on? just wonder. Could that be thomosta need to be replace? Just wonder. Please let me know ASAP, thanks ya.
David