Air suspension on the 2000 ford expedition EB isn't working Checked fuses Tested voltage to relay switch then to compressor voltage was good. What could cause it not to kick on and inflate airbags?

Answer 1

I've had the same problem... try smacking the compressor with a metal rod while the engine is running to see if it will spin free. Either the compressor points or bearings are shot and beating it up will sometimes free up the motor to spin. If you can get it to start pumping it should run until your suspension is inflated again. After it pumps up your air springs IMMEDIATELY shut the system off to disable the auto adjust features (they will cause you to lose air rapidly if the compressor doesn't run reliably). The system ON/OFF switch is located on the passenger side under the dash (near where the firewall and sidepanel meet). There will still be some gradual loss in the system (none of the valves provide a perfect seal since it is a dynamically adjusted system) but it will buy you a couple months of driving to get your replacement parts. You'll have to replace your compressor (as I did). In Canada the only supplier of rebuilts is StrutMaster. In the States you have some options and can Google them. Hope this helps. If you're stuck riding on your axel at least there is no pressure in the system and you can easily replace the compressor yourself.