I flushed the cooling sytem (man that stuff was nasty) and now my heat doesn't blow hot. It blows cool air. Any ideas on how to fix this?? I am going to check the mixture and make sure it's 50/50 mix but any other ideas would be helpful. The only other thing I can think of would be low coolant or the thermostat somehow isn't working (but it was working fine before the flush) Thanks-

flush it again. get more crud.

make sure when flushing it again to flush/reverse flush the heater core. I have a post on here with a couple good tips just search for my name on this forum and look for a heat problem, not exactly sure what the thread heading was called but deffinately HEAT something......