I notice a sweet smell coming from the vents when either the heat or the ac is on, and I get headaches and become dizzy if I smell it too long. From what I gather this is most likely radiator fluid that I am smelling, so I can only assume that there is a leak in my heater core. I wonder if I could have damaged it when I was installing my new stereo deck? Either way, I will most likely have to have it replaced since the only way I can keep my car defogged is with the windows down (and that means being uncomfortably cold!).
What I want to know is how much should this cost me, would it be possible to do it myself, and is there anything I should inspect before taking it in?