a/c moldy stale smell. How unclog evap drain hose

[BobbyGFirebird]

Next newbie question: i've got that moldy smell a day after a/c runs, and folks say a simple clogged evaporator drain hose. But, what is BEST way to clean or unclog it with simple tools? Video, pics. Thanks.

[0rion]

run a coat hanger up that hose....is your passenger carpet getting wet? If not it may not be a clogged hose but just moisture in the vents. My truck is bad about doing that. When it's real humid for a while it'll have a musty smell when you first turn on the a/c. I just make it a point a couple times a summer to spray some lysol into the outside air induction vent with the fan on high. Problem solved.

[BobbyGFirebird]

Thanks. Do you know where the evap drain hose on '99 Firebird is found under the hood? I don't think my carpet wet. Smell is just from the vents. A/c had not been workimg for over a year per prior owner, and i just got it going with the Refrigerant charge/bottle. On my darn Japanese wagon, you can't miss it cause it leaks like a broken fire hydrant on every parking spot ! :-)

[pajeff02]

Drain hose is accessed from under the car, back by the firewall, maybe passenger side if I remember correctly.

[2002ssslp]

Don't forget the Lysol, you may have some mold in the box.