Air Compressor keeps running.Bags are fully inflated and not deflatting when left for days.

SOURCE: I have a 1993 lincoln

There are several ways to fix this. On some of the Air ride models you can put in regular springs and replace the Air bags. To work with what you have, you need to diagnose the bad parts and then make your decisions.

Your Air ride has a diagnostic plug like the kind you hear about for the engine. You need to take it to a Body shop or Independent or even a Dealer and see what parts you car needs. Some Autozones and Oreillys might have this specialized scanner for the Air ride.

The Air pump can be obtained used at Salvage yards. So can the Suspension bags and any switches you need. Some yards are now giving 1 year free exchange warranties. Others are 30days to 90days. You will need a Repair shop who is willing to use Used parts. But you may not have a bad pump with the other problems you are having. You can even get rebuilt Air bags.

You can expect the pump to be slow if the air is being released as fast as the pump is putting it in. There is an electric switch in each corner of your car which can bleed off the air. You may only have 1 bad switch. This is why an accurate Diagnosis is important to saving you money.

If anyone has jacked up your car without turning off the Air ride, it is very easy to throw the switches out of adjustment. You may only need to adjust and not replace the switches. The adjustment procedure needs to be done on a surface like the body shops use. This would be a verified flat surface or a Frame machine. If you had one wheel sagging it would be pretty easy to work on the one side. But with your symptoms it could be anything.

About the only thing you can do is look under the car while it is running and listen for escaping air. It is not going to be easy with the engine and pump running.