Took a trip to southern I'll this weekend, and on the return the AC lost pressure in the blower, almost non existent. There were A LOT of gravel roads we were on, would the cabin filters clog from this loosing pressure?
Any suggestions?

 

Weird, I let the car sit for an hour and the pressure came back. Frozen coils? I dunno, sorry for the wasted space.

 

You mean the A/C lost pressure as in you have a leak in your system or lost pressure as in it stopped blowing air? Two completely different things. I've never heard anyone describe stopped blowing air as a loss in pressure.
If that is what you mean did it stop completely or stop blowing cold or just really weak?

 

sounds to me like the evap had froze

 

The vents were blowing weakly, sorry for my confusing terminology. Same diff though..

 

and thats the type of "description" us techs hate

 

Probably not the evap then. But you can go ahead and replace that. Same diff.

Does the flow change if you set the fan to low or high? If nothing is changing it may be stuck on low. Not sure if these are electric switches or vacuum switches.

If there's a slight change it could be the cabin filter.

 

The problems gone now that the car sat and thawed out.
The level/zone switch is vacuum and the fan is electric.

And finally, get off my back, when a fan blows through a vent/tube, it creates "pressure", therefore if something is blocking this forementioned airflow, it creates a "lack" in this "pressure".

And when I mention "blower" and "cabin-filter" you should automatically know what I'm talking about.

So kiss my A!

 

its creates flow, like an oil pump creates flow *picking a fight*

 

You've gone from suck to blow.