Unless someone has had the system open for anything the inside of the system is clean. Poor performance might be due to high humidity and heat. Optimum performance is around 20* to 25* air temp difference from outside temp to inside temp. Just try cleaning the A/C oil that is infron of your radiator really good, and that should help.. This . if pressure checks and everything else is alright. Running the system on recirculating is better for your comfort, the A/C only has to recool the inside air instead of using hot outside air.
<span style='font-family:Impact'><span style='color
urple'>Wm. D. Cunningham</span></span>
My 1984 BMW 633 CSi Pictures: http://www.roadfly.com/bmw/gallery/p...37076,1;-24,1;