For 1990-2009 cars

### Air Conditioning Compressor Oil Diagnosis

Condition | Corrective Action
--- | ---
Clean Oil no debris present | No corrective action necessary.
Clean Oil with debris present |

• | Inspect the suction port of the replacement compressor for presence of a suction screen. If the replacement compressor does NOT contain a suction screen, install a suction screen in the line.

• | Replace the desiccant or component containing the desiccant.

• | Replace the desiccant filter if applicable.

• | Remove and inspect the high pressure side filter (if applicable).

• | Remove, inspect, clean, or replace the orifice tube.

• | If the system has a front orifice tube and is equipped with a filter in the rear auxiliary line, remove, inspect, clean, or replace the filter.

Dark brown/black and/or pungent/unusual odor with no debris present |

• | Replace the desiccant or component containing the desiccant.

• | Replace the desiccant filter if applicable.

• | Flush the refrigerant system.

Dark brown/black and/or pungent/unusual odor with debris present |

• | Replace the desiccant or component containing the desiccant.

• | Replace the desiccant filter if applicable.

• | Flush the refrigerant system.

• | Inspect the suction port of the replacement compressor for presence of a suction screen. If the replacement compressor does NOT contain a suction screen, install a suction screen.

• | Remove and inspect the high pressure side filter if applicable.

• | Remove, inspect, clean, or replace the orifice tube.

• | If the system has a front orifice tube and is equipped with a filter in the rear auxiliary line, remove, inspect, clean, or replace the filter.

Oil Overcharge | Flush the refrigerant system.
Refrigerant Contamination | Flush the refrigerant system.
Hybrid Polyester Refrigerant Oil (POE) Contamination |

• | Flush the refrigerant system.

• | Replace the desiccant or component containing the desiccant.

• | Replace the desiccant filter if applicable.