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#1
06-15-2007, 08:08 PM
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Air Conditioning PSI
Hi, I own a 97 GP GT, 3.8, 118,500 and I'm wondering what the normal/correct PSI is for our air conditioning R-134a. I did a pressure test on the low side service port and it was between 26 and 28 PSI. Is this in the correct range? Thanks in advance for any input.
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#2
06-15-2007, 09:46 PM
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Re: Air Conditioning PSI
Paul, for a proper reading on the refrigerant charge it depends on the ambient temperature. The psi reading you are getting may be normal. For example in my area of the country based on the current temperature it would be low. PM me and I think I have a FSM A/C chart in PDF file format with the cross reference charts.
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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#3
06-18-2007, 01:40 PM
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Re: Air Conditioning PSI
The hotter it is outside, the colder the ac is going to get and the higher its pressure is going to be. When its hot, check the pressure and it should be at 30psi on the low side.
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2003 Grand Prix GT 1993 Cavalier 2.2L
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