Hey guys & gals - I have a 96 hightop conversion van. The back blowers for heat or AC never worked since ive owned it. Last fall i had to replace the heater core just behind the passenger side dash area & everythings been fine since, i have hot air, and good AC out of the front, i dont use the back. Last night i noticed a strange smell on the way home and noticed the van filling up with smoke or mist coming out of the rear vents which are along the top, 2 or 3 on each side. The front heating seemed fine, but whatever it was coming out of the back vents was bad smelling, and it wasnt hot, never noticed hot air come out of the rears, i just keep them shut, and it was cold smoke too. Can anyone give me some ideas? - Thanks!!