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1990 Chevrolet Suburban 1500 Question: Air not cold



jesschill, 5.7L V8, Macon, GA, June 25, 2009, 00:55

replaced compressor flushed the lines new accumulator and orifice filter added 2 cans r134 still not cold gage is reading about 50 psi

2 Answers
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  • Answer #1

    June 26, 2009, 13:38

    2 cans of 134a does not sound like enough charge for the a/c system on your Suburban. There is usually a label under the hood stating the charge amount - often found on the top of the accumulator which you have just replaced. If you have rear a/c that will require more refrigerant that front a/c only. You will need to find out what the proper "charge" amount for you a/c system is. Once the refrigerant level is correct then you can check the system performance.

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  • Answer #2

    Visitor, June 01, 2010, 12:41

    did you vaccum the system to remove air before you charged? If not it could be reading 50 psi because air is trapped in the system along with the 134a.

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