So the other day I was bleeding my coolant system and I saw a plum of steam come out of my heater vents, I thought it was my contacts and dismissed it and went about my day. Later on I was driving with the ac on and I heard a spewing sound coming from behind the dash. Now tonight my windows were all staying fogged with the defrost on, and ever since ce the bleeding issue I have been smelling coolant inside the car. I want to know is there an easy way to bypass the heater core, and also if you bypass the heater core would you retain the use of the ac, would stop leak work, or should I strangle my wallet and tackle the diy right away. Also is the any other part that could be broken on my car that might be easier to fix than a heater core that consider the same symptoms. Thanks for any and all help guys.