I have a '96 Caravan, when we turn on the heater (this just started, not
sure if it's doing this with AC yet), it will only blow if it's turned full
blast on the blower. All or nothing. I was told that this may have something
to do with the cold (it's been fairly bitter cold here the last couple
weeks, temps in the teens), but I'm not completely satisfied with this
explanation. Any ideas?