Now that I actually have coolant flowing through the heater core by using a plastic tie to hold the heater valve open, i'm still having a problem with it taking forever for warm air to start blowing out. I'v noticed that whenever I check my coolant level when the engine is off, there is no coolant in the hose with the fill cap and only about 1/3 full while the engine is running. There is good flow but just a very low coolant level. I'v tried topping it up but whenever I do that and i drive around I get perfect hot air, but after I drive my car for a day and check the coolant level it's very low again, and it will take forever to get warm air again. My guess is that my thermostat is not opening all the way and is restricting flow, or there's a kink in one of the hoses. I do, however, keep hearing a dripping sound comming from inside the engine right after i turn my engine off and my worst fear is that one of the coolant lines inside the engine has blow up and there is coolant leaking into the engine where it's probably mixing with my oil or being combusted with the fuel/air.