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07-07-2014
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#1 |
 Join Date: Sep 2013
Location: Los Angeles, CA
Posts: 121
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A/C gauge readings
I thumbed through the Service Manual but didnt see what i was looking for.
What should the high & low side gauges read when the system is fully charged? this is for a 1992 with a R12 system that is all original. many thanks! |
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07-07-2014
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#2 |
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,158
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Re: A/C gauge readings
What is the Ambient Temperature outside? Humidity?
This should help 
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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07-07-2014
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#3 |
 Join Date: May 2011
Location: Sydney, Australia
Posts: 2,466
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Re: A/C gauge readings
Keep in mind that your pressure is actually going to be a little higher than what the PT chart says unless you have a big box fan moving air across your condenser.
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07-08-2014
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#4 |
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Join Date: Sep 2013
Location: Los Angeles, CA
Posts: 121
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Re: A/C gauge readings
Thank you everyone and don't know how i missed that chart.
Temps tend to be high 70's/low 80's, humidity around 45-50%. will make note of higher temps without a fan blowing across the condenser. as always this group is top notch and extremely helpful. big thanks to all. |
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07-08-2014
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#5 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,158
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Re: A/C gauge readings
Also looking at the PT chart you can see why R134a will put a bigger drag on the motor than R12
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978 |
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07-08-2014
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#6 | |
 
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,815
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Re: A/C gauge readings
Excellent Information Jeff....thanks
 Quote:
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Linear Mode
