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Buying Tahoe. 253m A/C not work. He try to rechg but not take it. problem reason

(1999 Chevrolet Tahoe)
in Mena, AR on June 17, 2016
It would not take chg. compressor not kick in. he had veh 11 yrs a/c work till stored veh about 8 mos he thinks. Everthing else good
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Popular Answer
on June 17, 2016
First, momentarily connect a wire direct from the battery positive to the compressor clutch feed, just to verify that the compressor will run. Next get some R134a with fluorescent dye. Connect the refrigerant feed to the low pressure port (the larger of the two ports), start the engine with the a/c on full blast, connect your temporary feed to run the compressor, and feed in the refrigerant. After a bit of refrigerant has been drawn into the system, the compressor should stay on without your temporary feed. Add additional R134a, until you feel the system cooling. Then check for leaks with an ultraviolet light. Wherever you have a leak, it will glow bright green.
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