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1993 Lumina air conditioner has a high low pressure reading at about 120 and a zero high pressure what could be the problem?
Wiki User
∙ 15y ago
I have worked on air conditioners since 1960 and have never heard of a low side reading without a high side reading. Are you sure you are on the low side, the fitting is on the accumulator. If so you need to be sure that the hose is depressing the schrader valve. If you loosen the line at the gauge you should have pressure. If the high side is 120psi and the low side is zero, then you are low on refrigerant or you could have a clogged orfice tube.
Wiki User
∙ 15y ago
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