If your Lumina's AC compressor is malfunctioning, here's the process you should follow:
1. Diagnosis: Before replacing the compressor, ensure it's actually the problem. A malfunctioning compressor can be caused by several issues:
* Low refrigerant: This is the most common cause of AC failure. A leak somewhere in the system needs to be found and repaired *before* replacing the compressor to prevent the new compressor from being damaged as well. A qualified mechanic can perform a leak detection and recharge.
* Seized compressor clutch: The clutch might be seized, preventing the compressor from engaging. This might be fixable with lubrication or replacement of the clutch itself, but this is still often a smaller part of a larger problem.
* Electrical issues: Check the compressor clutch relay, wiring, and the AC pressure switch. A faulty component in this system can prevent the compressor from turning on.
* Bad condenser or evaporator: These components can restrict airflow and put strain on the compressor leading to failure.
2. Replacement (if necessary): If diagnosis confirms a bad compressor, here's what you'll need:
* New or remanufactured compressor: Purchase a compressor specifically designed for your 1995 Chevrolet Lumina. Ensure it's the correct type (e.g., correct pulley size and type). You can find these from auto parts stores or online retailers. Remanufactured compressors are usually a cost-effective option.
* Refrigerant: You'll need the correct type and amount of refrigerant (R-134a is likely, but double check your owner's manual). Do not attempt to handle refrigerant yourself unless you have proper training and equipment. Refrigerant is under high pressure and can cause serious injury.
* Compressor oil: The compressor requires a specific type of oil. Add the correct amount according to the new compressor's instructions.
* Tools: You'll need a variety of tools, including wrenches, sockets, possibly a compressor clutch removal tool, and potentially vacuum pump and gauges for the AC system (if not using a shop). This is a job best done with a complete set of mechanic's tools.
* Safety glasses and gloves: Always protect yourself when working on your car's AC system.
3. Professional Help: Unless you have extensive experience working on automotive AC systems, this is a job best left to a qualified mechanic. Improper handling of refrigerant or incorrect installation can lead to further damage and potentially expensive repairs. The system requires proper evacuation, charging, and leak detection.
In short, while you *could* technically attempt to repair a 1995 Lumina AC compressor's clutch, replacing the entire compressor is usually the most practical and cost-effective solution. Consider the risks involved with working with refrigerant and the complexity of the AC system before attempting a DIY repair. Seek professional help to avoid costly mistakes and potential injury.
