My airride on 2000 lincoln navigator will inflate but not deflate

There is a Master deflate valve that is usually mounted on the drivers side under the front fender wheel well. That is if your compressor is not turning off.

The dump valve gets a signal when a door opens to lower the car for loading or unloading.

With electric work being what it is, a really good diagnostic machine can plug into your air controlled ride system and quickly and accurately spot the bad part.

It is cheaper to buy 1 correct part than several wrong part guesses.

I have a 2000 Lincoln Town car, had the same problem, it was the rear air suspension/shocks. They are air bags basically that levels your car and it cost about $300.00 for each at the dealer for parts and install but it also has its own motor that inflates and deflates these air bags and I also had to replace that and that cost over $400.00 installed at the dealer.

AIR COIL SPRINGS WILL DEFLATE AND BE DAMAGED IF YOU DID NOT TURN OFF AIR SUSPENSION SYSTEM BEFORE RAISING VECHICLE AND CHANGE TIRES IF YOU DONT TURN OFF AIR SUSPENSION IT WILL CAUSE AIR SPRINGS TO OVER INFLATE CAUSE AIR SPRING SPRING DAMAGE.

the air ride suspension has level sensors under the vehicle, one of the sensors must be bad making the truck deflate the airbag or inflate it too much. you may need to have someone with a scan tool to access the air suspension module and check for fault codes. you can try turning the air suspension switch off for about an hour to see if the system will reset. the switch is located under the dash on the right side kick panel.

I had same problem check ride height sensor on the right front mine was stripped ....Bad news theyare 300 bucks each.

leaks in all the bags and a bad ompressor or power relay.

The compressor will only inflate once or twice and only within a half hour of the ignition being turned off. If the bags deflate over night there is a leak in the bag and will probably need to be replaced. If you get under the car and take a look at them you will likely see deep cracks in them, specifically around where they fold.

Definitely sounds like there is a leak in your air suspension somewhere. I'd have a local shop check it out. There is a switch for the air suspension either underneath the glovebox right hand side of firewall. or in the back of the vehicle behind the left panel. it is labeled suspension

First, you should have a warning light telling you it is not working. There is a switch for the air suspension underneath the glovebox-right hand side or in the rear hatch area on the left panel..make sure it's on. If all 4 air bags are deflated it could mean the air pump or actuator is malfunctioning.

check your leveling unit that attaches to the trailing arm, see if the rod is still attached if not unit may be bad