Originally Posted by Walleye Hunter

It finally warmed up so I went out took it for a ride. Everything worked but the heat and the heater lines were pretty warm on the in side and a little cooler on the out side. I disconnected the heater core and blew through it backwards and some dirt came out but I was able to blow through it with some effort. I don't know how hard much effort it should take but it didn't seem like too much. I hooked the garden hose up and a cloud of dirty water came out. I flushed it then blew the water out a couple of times, water flowed well. Hooked it back up and it fixed it big time. I have major heat, not just a small improvement. I a greatly relieved that that cured it and the core doesn't need to be replaced.

Thanks for the help