My saturns used to suck all the heat out of the engine too if I ran the fan too high. And I did maintain their awful thermostats, even used cardboard acrosss the radiator.
Current scheme is to run the heat on full hot, or the desired 72 on ATC, but with the fan on low. When the engine warms up I boost the fan temp. I never use recirculate so that extra heat is just blowing out the rear vent flaps in the trunk.
Current scheme is to run the heat on full hot, or the desired 72 on ATC, but with the fan on low. When the engine warms up I boost the fan temp. I never use recirculate so that extra heat is just blowing out the rear vent flaps in the trunk.