Asked in
Dodge Ram

Your heat is not blowing out of your floor vents but they blow out of the defrost and upper vents what could be wrong?

Answer

User Avatar
Wiki User
February 02, 2009 10:46PM

My guess is that you have a vacuum line that isn't connected or that has a hole. In the cars I've driven, the blower blows air into the heater box, where the heater core lives. Vacuum lines open and close flaps (or doors) on the heater box to direct the air where the control unit says it should go. These lines are usually rubber tubing, and the ends can dry out and crack, causing leaks. I have never worked on a dodge, but I've replaced miles of vacuum line on other cars.