A.C won't Turn on Above 90F Degrees - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-20-2014, 05:49 AM   #11
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We have that same machine at our work for our trucks. All automated. Just hook up, push a few buttons and walk away.
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Old 08-20-2014, 10:37 AM   #12
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OK, I must need a coffee, because I still don't understand what was done...
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Old 08-20-2014, 01:56 PM   #13
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I don't totally understand either, because like I said if you equalize them, you are adding, or removing from either low, or high end.
I figured that if it had problems when the ambient temps raised, then there would be refrigerant/oil added, maybe the low end was good, but the high end was too high.

I'll have to try to read the post on what was done again.
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Old 08-20-2014, 05:49 PM   #14
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X3 confused...
Does the outside or ambient air temperature effect the amount of pressure expected to achieve on the high & low side?
In other words is there a chart or different pressure readings if you were trying to install refrigerant at 95 degrees for instance?
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Old 08-21-2014, 09:13 AM   #15
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the pressures go up or down based on ambient temp. and the outlet temp and pressures is different based on if its on recirc. i dont see how a machine watching the gauges is better than a experienced human.
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