Cold air coming in
My 74 318 dart is my daily driver. I go to work at 7:00 am and it's been 16 to 20 degrees Fahrenheit. I've got heat coming out of the defrost and it's pretty warm when I take off but within 5 mins of driving it's freezing inside the car. The heat is still coming out the defrost but it's like the window is down. It's a special edition and has a ton of insulation everywhere. There is a door on the passenger side heater plenum. I can stick my arm in and feel it goes up to the cowl panel through a hole about 4 or 5 inches in diameter. Am I getting too much air through the cowl panel? Can I close off the passage to the cowl and leave the door open on the plenum to recirculate the heat or am I missing something?
My 74 318 dart is my daily driver. I go to work at 7:00 am and it's been 16 to 20 degrees Fahrenheit. I've got heat coming out of the defrost and it's pretty warm when I take off but within 5 mins of driving it's freezing inside the car. The heat is still coming out the defrost but it's like the window is down. It's a special edition and has a ton of insulation everywhere. There is a door on the passenger side heater plenum. I can stick my arm in and feel it goes up to the cowl panel through a hole about 4 or 5 inches in diameter. Am I getting too much air through the cowl panel? Can I close off the passage to the cowl and leave the door open on the plenum to recirculate the heat or am I missing something?