My AC doesnt work that well but it doesn't seem to run more thatn two or three deg. hotter with it on. I have never heard the aux fan come on which makes me think it's not really running as hot as it shows.

Stephen

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85 300D 305K miles WVO(105K so far), Mine
82 300SD 235K miles BIO-D, Wifes
96 F250 SC PSD 4X4 285K MILES BIO-D, Ours
89 BRONCO 182K MILES sold
Finally Compression Ignition Only!