well coolant flows through the core whether you have the fan on or not, I don't see why having it on will help this go any faster. If it's off, the engine
will come to temp faster. I'm not debating whether those directions are correct or not, that's straight out of the manual, I just don't see why that is necessary.
I'm just trying to figure out if I might have to change something on my car because its a 95 Impreza with an 02 wrx motor and an 04 STi dash. I didn't get any of the heater controls for the center panel but instead made my own face plate out of aluminum and the heater is controlled by a switch. on or off
so if there's something in the electrical system that needs to be switched on besides just the heater fan relay then I may have a problem.