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Old 08-18-2014, 08:21 AM   #6
engineer_gregh
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Join Date: Feb 2012
Location: Smyrna TN
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Re: Air condition performance

I would also check the flap in the diverter box on the inside of the truck. That seems to be easily broken. I'm not sure I understand what the compressor switch you referred to is? If you mean you replaced the POA valve with a hi lo pressure switch, was it calibrated for R12 or 134a?
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