A/C dash air volume

[ShalloWater]

Intermittently, and without any obvious cause, my a/c will stop blowing high through the dash vents. If I turn the fan up, I can hear the air volume increase, but it won't come out of the vents. It's going somewhere.

Any ideas? I'm guessing a gate somewhere is failing, but don't even know where to begin.

Casey

 

[JUST4FUN]

i wonder if the evap case is not draining and/or the evap is freezing up, being in texas
it gets very dusty there might need a good cleaning out

 

[JUST4FUN]

not sure does it have a cabin filter

 

[ShalloWater]

I don't know what an evap case is. I think I have a cabin filter. I'll look tonight at home. I know if I do it hasn't been changed in years.

 

[JUST4FUN]

This is where the air goes to be conditioned ,the evaporator and the heater core live here. The air that comes from the outside might pass through a cabin filter first.
as the filter gets dirty the volume gets less and less possably causing evap freez up
and your problem

 

[JUST4FUN]

evap case is located by your passangers feet under the dash

 

[ShalloWater]

Gotcha. Thanks. I'll look tonight, or this weekend.

 

[ELVATO]

What model year do you have?

 

[ShalloWater]

'04 EB 4x4

 

[TexasR.N.]

We have the exact same problem, in Texas as well.

Craig

 

[ShalloWater]

My owners manual doesn't mention a word about a cabin air filter.

 

[supermario]

My brothers 01 eddie bauer does the same, but the cold air actually comes out the defroster/floor area.. My 95 Bronco does the same, when under a load or driving up a hill, the AC will not come out the vents and redirect towards the defroster or floor area.. I hate that.

My bronco started doing that years ago and we found a damaged vacuum hose/line in the engine compartment, it was a vacuum line that connected into that big vacuum ball thing? After we replaced the hose/line, it didnt do it anymore, but just as of month ago,, it started up again.. I think its a vacuum leak someplace again...