I finally got around to attempting to fix the air gap in my compressor on my 02 f-350 so far so good. The question I have is I have a 05 f-350 with 203000 miles on it and am having the same issues with no a/c at idle and inter mitten a/c at driving speeds. I tried to fix it the same way as the 02 but when you turn on the key and put the ac on max the compressor will not lock up to allow me to remove the 8mm bolt to pull off the compressor clutch I guess some change was made that will not engage the clutch with it not running? It engages right away when cranked. Any ideas?

 

There's a "spanner" wrench designed specifically to hold the clutch plate. Maybe they "loan" (buy and then return) at your local parts house. That will get the bolt removed for you, but I wonder if there isn't something else going on that's preventing current flow to the coil, like a too-low-refrigerant-charge opening the low-side switch (it's a "safety" thing).

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