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Are these normal low pressures?

jga2z on Wed May 30, 2012 3:00 PM User is offline

Year: 2001
Make: Chevy
Model: Camaro
Engine Size: 5.7
Refrigerant Type: R134-a
Ambient Temp: 80
Pressure Low: 30
Pressure High: 90

I am not a noob, but my memory is so bad that since I have not done any AC work this year I have to ask a basic question.
Given the readings provided does this car just seem to be low on refrigerant? The vent temps are obviously high (don't have exact number because I cant find my thermometer yet). But I thought the low side was high relative to the high side.
The compressor was replaced last summer and AC was working fine until the first time trying this year.

GM Tech on Wed May 30, 2012 4:57 PM User is offline

65% of mobile a/c failures is due to loss of charge due to a leak-- I'd play the look to me to have about 1/3 the necessary refrigerant in your system.

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......

jga2z on Thu May 31, 2012 12:16 AM User is offline

Guess I'll add a little refrigerant and put some dye in and check for leaks.

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