Question A/C Not Working on 2001 F250 PSD

cpadolf3

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Sorry to post this on the power/performance thread. Not sure where else to put it. Yesterday, I left my truck running for about 5 minutes while I was doing something in the house. The AC had been working all day, and I had it on Max/Cold. I came back out and noticed it felt warm. Placed my hand in front of the vent and realized it wasn't blowing at all. Moved the switch around a bit, even tried heat. Nothing. No air will flow out of the vents, regardless of what I do. What could this be?

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79jasper

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Well usually you can start with checking the fuses.
Next highly likely culprit would be the blower motor resistor.

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cpadolf3

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Do you know which fuse it is?

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79jasper

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Couldn't tell you.
Look in the owners manual if you have it.

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DaveBen

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Probably fuse 20 or fuse 21. These are switched from the ignition as the AC only works when the truck is running.
 

cpadolf3

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Thank you very much! All fuses appear to be good. Should I move to the resistor at the fan motor itself?

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cpadolf3

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Wouldn't I need a specialty wire harness?

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DaveBen

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I would use test wires with an alligator clip on each end. It is just to test it and see if it runs or not.
 

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