Musty smell comming from A/C when running

[richardodie2]

Does anybody know where the Heater box drain is located i think it might be plugged because no water is leaking out when the A/C has been running, tried looking but didnt locate it, any ideas, also is there a easy way to clean if needed.

 

[Ornery]

I've scoured the service manual without being able to find it, but the core is right above the tranny hump by the firewall. This thread proves it dumps out near a transmission electrical connector. That ought to narrow the location down pretty well, though I have no idea how accessible it will be.

 

[likibow]

it's under the drivers side next to the tranny get a light cause it is hard to see you can reach it but its very uncomfortable to work the test pipe and the tranny doesn't give you much space to work unless you get a kid to do the job haha i recommend you to buy an Evaporator and Heater Foam Cleaner it's very easy and simple to use so go ahead and try it I've used and works buy it insert the little hose on the a/c vents that are in the middle of the dash all the way in, spray it and let it work that's it hope it helps!