A/C Slowing down upon long drive?

[BillyV65]

Hey guys,

I'm new here, but am a regular on JeepForums since I have a '97 Wrangler and the '08 GT is the girl's car

Here is the problem that just cropped up (and very convenient since the odometer just tripped 40k):

After a long drive (1+ hr) and having the a/c on, the output of the fan seems to get worse until you can barely feel any air coming out. You can hear the fan blowing pretty hard when you have it on high, but it seems almost no air is coming out. I don't believe it has anything to do with the compressor or lack of R134a since the air that you can feel is ice cold, it's just there's not much coming out.

Also, I can leave the car setting with the ignition off for a bit of time and it will come back, but will quickly go away depending on how long I have let the car sit.

I have felt around the floor and defrost vents and no air is being diverted there, so I'm pretty stumped as to what could be causing it.

Any help is GREATLY appreciated as a search brought up no results.

Billy
'08 Premium GT Automatic Convertible, bone stock

 

['08GTcaRED]

Hey Bill it sounds like it could just be the blower fan/motor... That's really the only solution(that I can think of mind you) that it could be considering everything else you have said. Doesn't sound like a clogged venting system since it blows normally at first and if you want you can get out and feel the a/c pipes when it starts to dwindle, but that shouldn't affect the actual airflow...

 

['08GTcaRED]

Ha silly me I forgot to post the rest of my message...

Welcome Bill! Sorry to hear your girl's car is acting up... I love a good jeep as well nothing like a little rock climbing to set your mind at ease