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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

AC works only on the highest setting

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Old 05-16-2015, 04:15 PM
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Default AC works only on the highest setting

My 2006 F-150's AC only works on the highest setting. On any other setting it doesn't work at all. Any idea of what the problem could be?

Last year only two of the settings worked and now just one.
Old 05-16-2015, 04:32 PM
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Blower motor resistor is out.
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Old 05-16-2015, 04:43 PM
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+2 it needs a resistor for the switch had to replace mine on my old truck for the same exact reason
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Old 05-16-2015, 04:46 PM
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Quick and easy fix.

This is the one I bought to fix my '08.
http://www.amazon.com/gp/product/B001NZ0SP8/ref=od_aui_detailpages00?ie=UTF8&psc=1 http://www.amazon.com/gp/product/B001NZ0SP8/ref=od_aui_detailpages00?ie=UTF8&psc=1
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Old 05-16-2015, 09:08 PM
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Originally Posted by jshillin
Quick and easy fix.

This is the one I bought to fix my '08.
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
I've done that fix and it's easy. Bought the part from Tasca and installed it in about 5 minutes. Believe it's behind the glovebox area



Last edited by Five-O Donut Hole; 05-16-2015 at 09:10 PM.
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Old 05-17-2015, 01:08 AM
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Thanks everyone! I ordered the part off Amazon. Hope this fixes the problem.
Old 05-17-2015, 12:46 PM
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That must the noise I'm starting to hear behind the dash, is that right ?
Old 05-17-2015, 06:08 PM
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Originally Posted by bourgeois1269
That must the noise I'm starting to hear behind the dash, is that right ?
No, it doesn't make a noise, the fan just stops working on different settings.
Old 05-21-2015, 11:21 PM
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I replaced the blower resistor and that fixed the problem. Thanks everybody!
Old 05-29-2015, 07:41 PM
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Mine was the same. Only working in position 3 and 4. New resistor pack was 50.00 Canadian with taxes. Quick and easy install. All speeds working again. Video was great showing exactly where the resistor was. Thanks to all.


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