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Could be you are low of R-134a. You can check the PSI level on the lowside with a gauge and if you are you can add R-134a. Any automotive store and some discount stores will have R-134a and gauges. Also you can check out the videos on the link below with show how to add R-134a to you car, and where to find the lowside port.
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∙ 13y ago
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If 1993 suburban rear ac not cold how can check the expansion valve?
If 1993 suburban rear ac not cold how can check the expansion valve?
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Need to know what the symptoms are to better answer your question. Repost with more info.
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