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Q: my rear air susp isnt working cant hear comp.running, switch on..reset maybe??? on 2001 Lincoln Navigator

was towed without turning off switch, but the problem occured a few weeks later. no air suspension in the rear at all! Please help
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You probable have this fixed by now but I have the same SUV, so I thought I would add a few comments, based on 1st hand experience. I am on my 3rd compressor...1) stock, 2) replacement and 3)a replacement compressor, that is actually built right. Since the Nav raises all four corners in 4X4 (next step after AWD) and lowers it while in park, you loose a lot by tossing the "leveling system" that used air and replacing it with shocks/springs. The ride is totally altered and you loose the ground clearance in 4X4 as well as the ease-of-exit, in park. The tow should not have damaged the system but a hoist will destroy it....if you get 2 or worst 4 wheels in the air.....the compressor will keep filling until the bags burst. If you decide to replace the compressor, I highly recommend replacing the relay behind the grill/bumper on the passengers side. I have had several "faults alarms" that the compressor had failed, when in reality the contacts on the relay got corroded or it lost its ground to the frame, keeping it from kicking the compressor on.
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get pump tested or install aftermarket non air susp kit, i think its a better way to go considering cars age
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Greg is most cases it is less overall cost to install aftermarket springs/shocks and still have a good ride.
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Not uncommon to have air suspension failures at the age of your car. Likely the pump has failed due to overworking with system leaks from air bag springs.
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