My son just bought a 95 Accord and when trying to get the windows to defog he found there is no air coming out of those vents. Air blows fine out of all the other vents, just not the ones up by the front window. I will note that until I just read other threads here we did not know that the a/c should be turned on with the defogger. Would that make any difference? I would think some air should be coming out of the vents when the defogger is on, even if the a/c is not. What do you all think could be the problem?

 

clogged prolly

 

A prolly would be....what? And where would one find it in/on a car, please and thank you? (No gearheads in this house - obviously.)

 

I think he meant clogged probably. Internet short-hand

 

Maybe the fuse or the motor that opens the vent is blown. Do you hear a motor run for a sec or two after you press the front defroster button?

 

close the side vents and the middle vents (if you can) and turn it on full blast with the AC on and see if that works. if not then it could be clogged with shiet.

 

Most ac/heat systems use a damper door that is operated by diaphragm driven by engine vacuum to redirect the airflow. Check to see if you have a loose vacuum hose. If the hose is attached to the diaphragm, remove it, compress the diaphragm and hold your finger over the top to see if it leaks down. If so, the diaphragm is ruptured and needs to be replaced.