02 Lancer A/C problems...
 

Hey everyone, got some problems with my 2002 Lancer. The A/C has been going cold and hot for a few days and now there's all kinds of brown stuff on the passenger-side floor. I've had the same things happen to other cars and those were tell-tale signs of heater-core problems, but I can't find anything online about it.

ANY ADVICE?!?