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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

A/C Pressure

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Old Jul 11, 2012 | 08:16 AM
  #1  
Leonandlisa's Avatar
Leonandlisa
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From: Las Vegas
A/C Pressure

It has been extremely hot down here this week and the A/C seems to be weak, can anyone tell me what the High and Low pressure readings should be? I am going to check it out after work.

The outdoor temp is about 110*, when I run the tests it will be still be between 100-105*

Thanks

Leon
 
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Old Jul 11, 2012 | 06:50 PM
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Larry NCKS
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From: Washington,KS/Lincoln,NE
This is just a general AC pressure for that ambient. Perhaps someone else will give you specifics for this system. I'd say 225-250/30ish at 105 degrees F.
 
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Old Jul 11, 2012 | 06:56 PM
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Leonandlisa
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Thanks, I will check it out
 
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Old Jul 11, 2012 | 10:00 PM
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Leonandlisa
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Ok here is the readings, at idle it is 32-35 on the low and 250 on the high. At 1500-1700 rpm it was 25-30 low and 270 on the high. These are US General gauges so they are not as accurate probably but pretty close. Does it sound about right?
 
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Old Jul 11, 2012 | 10:05 PM
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sounds good to me!
 
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Old Jul 11, 2012 | 10:21 PM
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Leonandlisa
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Thanks again for your help.
 
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Old Jul 12, 2012 | 02:12 AM
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TIRE FRYER
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From: Whittier, CA
Sounds good. I had been a little weary about mine as well lately, seems like it just takes a little while longer to cool compared to other vehicles, but it gets nice and cold after a little driving.
 
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