I have antifreeze leaking in to the drivers side floor of a 91 940 wagon. How do I tell if it is a hose or the heater core leaking? It has only steamed the windows one time and that was when I stomped on it on the interstate just to "blow it out". It has not steamed the windows since then. Will K W block sealer hurt the heater core? I just need a temporary fix until spring when I can afford to get the core replaced.

 

I have a 1999 Volvo S70. I was driving yesterday when foul smelling steam started coming out of the air conditioning vents and also from underneath the ashtray. My coolant level was very low (the reservoir was empty), and I added a whole gallon of coolant but it did not stay in the reservoir. Is my coolant pooling somewhere bad or do I just need to add more? Also is it possible to remove a fuse or something so my air conditioning won't turn on at all until I can take it in to get fixed? As it is now, steam starts coming out of the vents after about five minutes of driving.