why when i turn on the heat it doesnt blow out my vents on 1992 Cadillac Eldorado

it only blows out of dash board vent and when you outside of car its sounds like its blowing from the outside

by in Norfolk, VA on November 10, 2012
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , November 11, 2012
possible directional door