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Buick
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1986
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LeSabre V6-231 3.8L VIN B FI
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Repair and Diagnosis
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Heating and Air Conditioning
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Refrigerant Pressure Sensor / Switch
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Description and Operation
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Pressure Cycling Switch
Pressure Cycling Switch
This switch cycles the compressor "OFF" and on to maintain proper evaporator temperature. The switch is controlled by low side refrigerant pressure and opens below 25 psi.