Originally Posted by Merlb1
I had same problem with my '06 F150 crew cab. Denver dealer finally checked the EVAC system and the orifice tube for restrictions. Found restriction in orifice tube, replaced it. I now have ice cold air. My truck cools real nice in this hot weather. Might be the problem with yours..
Found this old thread on google.
I suggest to all that they have a VOV, variable orifice valve, installed when replacing. This price is $25 instead of $5 but makes the AC blow 5-20* colder at idle and low speeds without affecting the highway cooling.
If you are out of warranty and still having cooling problems I suggest looking into R406a legal refrigerant, or ES12a which is legal in only 32 states. Either is much colder than R134.
Nartron Corporation - Smart VOV