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Home >> Chevrolet >> 1990 >> Step Van 7.4 N, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> Defective Clutch Cycling Switch Pressure Gauge Readings >> Other Symptoms >> Evaporator

Other Symptoms: Evaporator

May freeze and restrict airflow if switch is allowing compressor to remain on too long.

Fig 1: Misadjusted Thermostatic Switch or Defective Clutch Cycling Switch Gauge Indications
G104005Courtesy of GENERAL MOTORS CORP.
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