Anyone elses AC kinda suck ?? - Ford Powerstroke Diesel Forum

 
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post #1 of 6 Old 10-06-2013, 02:26 PM Thread Starter
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Anyone elses AC kinda suck ??

So randomly we have had a couple days back in the 90s out here in northern california and i have tried the AC in the truck and for some reason on max AC and Normal AC it will blow cold for 1 min and then blow warm for 10 seconds or so then blow cold again , im thinking it probably just has a low charge and the low pressure switch is causing it to cut off cuz it seems to work good at idle clutch fan is very strong so im ruling out a high pressure situation .
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post #2 of 6 Old 10-06-2013, 04:08 PM
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I could be wrong but this may be a symptom of one of your blend doors going bad.. They are known to fail and have had to replace one in my truck as well.

2009 F350 CCSB KR / All stock for now
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post #3 of 6 Old 10-07-2013, 05:49 PM
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Mine was doing the same thing when I bought it. Freezing cold at idle but while driving it would fluctuate cold not so cold cold again. The dealer charged it and added a couple of pounds and after a few days it constantly blows cold all the time
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post #4 of 6 Old 10-07-2013, 05:51 PM
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I changed the pressure switch on mine and it was fixed. Only cost around $10 so maybe give that a try

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post #5 of 6 Old 10-08-2013, 03:16 PM
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Mine doesn't suck but she blows..

What? He asked....

:p
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post #6 of 6 Old 10-09-2013, 07:36 PM
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put some manifold gauges on it. could be several different things. 100* heat here most of the time and my ac will blow low 40*. i keep a thermometer in my vent permanently.

08 F250 KR
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