Ac vent barely blows

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Jul 13, 2009 | 11:46 AM

texasjack

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Ac vent barely blows

On my 2000 f250 diesel, it seems like the ac blows barely on the max ac setting. I swear its gotten worse over the years. Is it the fan? something else?

Jul 13, 2009 | 05:24 PM

projectSHO89

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From: St Louis

Probably, the evaporator has gotten clogged with dust or, perhaps, a critter got in there and made a nest.

Pull the blower out and inspect the plenum and evaporator.

Jul 20, 2009 | 12:04 PM

SpringerPop

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Joined: Jan 2002

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From: La La Land

Though just a "shot in the dark", try this:
https://www.ford-trucks.com/forums/8...ml#post7724237

Pop

Jul 20, 2009 | 02:49 PM

brian42

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Joined: Dec 2006

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From: San Diego, CA

Is it only in the MAX setting or is it just fan speed in general?

If it's just in max, I'd go with something restricting the cab suction.

If it's the fan in general, it could be the resistor bank (reduction circuit) that controls fan speed or the blower itself is getting old and weak.