High-Probability Items:
* Air Compressor: This is the pump that inflates the air struts. It's a common failure point. You'll need to find a replacement compressor specifically for a 1995 Mark VIII. They are often sold as "rebuild kits" or complete units. Make sure to get the right one; there may be slight variations between model years.
* Air Struts (Shock Absorbers with Air Bags): These are the most expensive part. They combine the shock absorber and the air bag. If one or more are leaking or failing, the car will lower on that side. They're often sold individually, so you might only need to replace one or two. Again, ensure they are the correct ones for your model year. Buying remanufactured ones is more affordable than new ones.
* Air Line Hoses & Fittings: These are the tubes that carry compressed air to the air struts. They can develop leaks, cracks, or become disconnected. Inspect them carefully. Replacement lines and fittings may be needed.
* Air Suspension Height Sensors (if applicable): These sensors tell the computer the height of the car. A faulty sensor can cause the system to malfunction.
Less-Likely-But-Possible Items:
* Air Suspension Control Module (or Computer): This is the "brain" of the system. It controls the compressor and manages the air pressure. It's less likely to be the problem unless you've already addressed the other items above. These are generally more expensive to replace.
* Air Suspension Relay: A faulty relay can prevent the compressor from turning on. This is a relatively inexpensive part to replace.
* Fuses: Check your owner's manual for the correct fuses related to the air suspension system.
Before You Buy:
1. Check for Leaks: Visually inspect all air lines and struts for leaks. You might hear hissing sounds when the system is running. A soapy water solution sprayed on the lines can help reveal leaks.
2. Listen to the Compressor: Does it run at all? If it runs but doesn't seem to build pressure, it's likely failing. If it doesn't run at all, it could be the compressor, the relay, or a fuse.
3. Diagnose with a Scanner (Optional but Recommended): A OBD-II scanner can provide codes that help pinpoint the problem. A more advanced scanner that can read air suspension-specific codes would be even better.
Where to Buy:
* Auto Parts Stores (Advance Auto Parts, AutoZone, NAPA, etc.): They may have some parts in stock, but availability for a 1995 Mark VIII might be limited.
* Online Retailers (Amazon, eBay): You'll find a wider selection and often better prices here. Be sure to check reviews and seller ratings.
* Specialty Lincoln Parts Suppliers: Some suppliers focus on older Lincoln models. They may have better quality or rebuilt parts.
Don't just start replacing parts randomly. Systematic troubleshooting will save you money and frustration. Start with the most likely culprits (compressor and air struts) and work your way down the list. Good luck!
