I have a 96 Intrepid ES with the 3.5 Liter. Lately I've been noticing that when I use my heater, it's very warm while I am driving...but when I'm idling, like at a stop light, it gets cold...I don't know why. Any suggestions? Sometimes after this happens it won't go back hot at all until I switch it to cold then back to hot again. Could it be my thermostat? Also...alot of the time when I get out of my car, I can smell burnt rubber...it may be coming from the engine, but I don't drive it hard..and also sometimes the air the blows out of my vents smells good..and sometimes it stinks like mildew, how can I fix that? I saw on TV that you can spray Lysol disinfectant into the air intake outside the car, below the windshield. I haven't tried that yet. Thanks alot.