If your 1993 Lincoln Town Car's A/C compressor is failing, here's the process you should follow:
1. Diagnosis: Before jumping to a compressor replacement, get a proper diagnosis. A failing compressor can have several causes, including:
* Low refrigerant: This is the most common cause of AC problems. A leak somewhere in the system needs to be found and repaired *before* replacing the compressor to avoid immediately damaging the new one.
* Seized compressor: This often results from lack of lubrication due to low refrigerant or other issues.
* Electrical issues: A bad clutch, wiring, or relay can prevent the compressor from engaging.
* Internal compressor failure: This is the least likely to be repairable cost-effectively.
A qualified mechanic with AC diagnostic tools can identify the root cause. They'll check refrigerant levels, pressure, and electrical components.
2. Repair or Replacement: Based on the diagnosis:
* Low Refrigerant/Leaks: The system needs to be evacuated, the leak repaired, and the system recharged with the correct refrigerant (R134a for most 1993 Lincoln Town Cars). This is usually much cheaper than compressor replacement.
* Compressor Failure: If the compressor is seized or internally damaged, replacement is almost always necessary. You'll need a new compressor and potentially new drier/accumulator (to filter out contaminants).
3. Compressor Replacement (if necessary): This is a complex job requiring:
* Proper refrigerant handling: Refrigerant is harmful to the environment and requires special handling and recovery equipment. Do not attempt this yourself without the proper training and equipment.
* System evacuation: The entire AC system needs to be completely evacuated of refrigerant before opening it.
* Component replacement: The old compressor will need to be removed and the new one installed, along with potentially a new drier/accumulator.
* System charging: Once everything is installed, the system needs to be recharged with the correct amount and type of refrigerant. Improper charging can damage the compressor.
In short: Unless you're a trained automotive technician with access to specialized equipment and refrigerant handling knowledge, take your 1993 Lincoln Town Car to a qualified mechanic for A/C repair. Attempting this yourself is likely to result in more damage and expense. The cost of a new compressor, plus the labor, will probably be several hundred dollars, but it will be far less costly and dangerous than attempting a DIY repair.
