I just did my head cooling mod and I am seeing temps around 220 when it's 90 outside ...it seems to creep up as I am moveing and will go down as it sits ...I am lost HELP.....lol
ThisIt depends when your fans are set to come on. If you have a 170tstat but your fans are set at 220 then your car is going to be at 220 anytime you're not running down the road fast enough to get enough airflow through the radiator to cool it down. You're probably seeing cooler temps with the AC on because the fans come on with the AC.