Automotive Air Conditioning Information Forum (Archives)

archie on Fri December 25, 2015 1:00 PM

Year: 1990
Make: chevy
Model: astro
Engine Size: 4.3l
Refrigerant Type: r134a
Country of Origin: United States

hi, is it possible to charge up your a/c system, by monitoring the input and output temp of the evap? stopping when both are the same temp.

GM Tech on Fri December 25, 2015 1:42 PM

Much easier with a scale to weigh it in- too many variables with your suggestion.

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

archie on Fri December 25, 2015 4:32 PM

rats!