Question about 2002 Ford F250 Super Duty SuperCab

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2002 Ford Superduty AC compressor in on in Vent Position

My truck AC compressor runs when I turn the switch to the 1 o'clock and 2 o'clock position. This is supposed to be fresh outside air only according to my owners manual but I still get air conditioned air. Is the switch defective? And if so, where besides Ford can I get one.

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  • yadayada
    yadayada May 11, 2010

    This maybe normal, call the ford dealer and ask them, also on some trucks once the compressor is started it can't be turned off by the mode switch while the engine is running, Turn the AC mode switch to vent only, then start, is the compressor running?? The switch is a dealer only idea.

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2 Answers

Turns out that the idea that emissionwiz posted was correct. You have to turn the engine off and then set the switch to vent. Seems dumb but I'm not the engineer that designed it. I'm sure there is a reason but at least I know that this is normal now.

Thanks for the help

Posted on Sep 18, 2008

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You have a blend air system. in this system you have servo motors that open and close doors that blend outside air and heated coolant that flows throught the heater coil. if one or more of these servo motors fail trying to regulated cab temp is futile. i would suggest that you go to a qualified a/c tech and your problem will be solved at minimal cost and with less fustration

Posted on Aug 27, 2008

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