The rear end of my Lincoln Navigator will not raise.

SOURCE: 2001 Lincoln Navigator : I'm

You need to have a scanner attached to the test plug for the Air Suspension. It takes a scanner which has more functions than most scanners and you may need to call around if you do not want to go to a Dealer.

The Master Vent solenoid is usually positioned under the drivers front frame and will have air lines going to it. Each suspension bag has a solenoid on it. You can mix up some soapy water and use a spray bottle of detergent and mist the bags and sensors to find leaks.

The doorjams and rear hatch use contact switches to complete the circuit for the Air ride system. The system is designed to lower the vehicle when a door or hatch is opened. If any of the doors or hatches are not closed, the system will not inflate and the air will bleed off when the pump runs.

Usually you will get a dash indication for DOOR AJAR. Your hatch may not send a signal. If you have had any lifting done on the car, the Suspension was suppose to be turned off. This may be what damaged the system.

As Electrical diagnosis is expensive, the quickest way is the cheapest. Having only the correct part replaced is also the cheapest. Check your rear cargo door switch, soap the underside Air System parts, and you will not have much money tied up into testing. After that call to find the proper test tool. Autozone and Oreillys may have the better scanner to loan out or find a Repair facility or Dealer and go from there.

I hope my solutions are very helpful in fixing your Navigator. You might want to ask about Aftermarket parts such as the Vent solenoid.

SOURCE: 2001 lincoln navigator rear suspension?

Here is how to tell if system is working.Get into the vehicle and close door. Set ignition switch to on position and move the gear shifter to neutral. After a few secs. you should hear the compressor turn on. If it comes on then put shifter back to park leave ignition on and exit vehicle. Compressor will stop when you open the door but should start back up in a couple of secs. after you close the door. You can then walk around the vehicle and listen for leaks.
If compressor does not come on there are 3 fuses and a solid state relay that controls it along with the module.
The 3 fuses are no. 109(50amp) in the battery junction box under hood.This is the direct feed to compressor thru the solid state relay. The other 2 fuses are located in the interior fuse panel and they are no. 6 (5amp) and no. 12(15amp).
What we usually see though if compressor does not run is either a bad compressor or the solid state relay. They both are rather expensive so I would have an experience tech look at it then.
However If you feel confident enough and have a voltmeter or test light respond back and I will tell you which wires to check.

SOURCE: I have a 2000 lincoln navigator, 4wd, and my rear

If you can get them inflated there is a switch on the passenger side that you can put in the **** off position till you get the problem resolved. Yet there is a part that is an inline part that can be leaking and must be replaced coast about $30.00. It is located in the engine compartment on the left side fender wall. It is in a airline that feeds to the Air suspension.What I did for a quick fix was a took the line apart place a 3/8 hose over it and clamped it. I have the part and never installed it because the above worked for me. Yet I do here the pump come on more often yet I was told the pump was bad. If you need to contact me email [email protected] or call 386 252 9987 fax will pick up on the 4th ring. I have a busy day tomorrow but try me later on in the afternoon 4ish. But email with the time you would be calling or leave your number. This information I am giving you cost me $500.00 to get.

SOURCE: rear suspension fell

it most likely blew a line going to the rear leveling valve to leval out the truck i would start there and then check the bags and the valve it self.

SOURCE: Does anyone have diagrams for

don live in the real world, that suspension is never going to work right again. you are going to spend a ton of money, and no matter what you do something else will go wrong. big mercs, lincolns, BMW, caddies, land rovers, etc all sit in the same saggy swamp. there are still thousands of collapsed Peugeots sitting in barns since the 1970s across the land waiting for a real suspension fix.

take a long look at www.strutmasters.com and consider junking the air or hydraulic suspension system and trading up to a real one with springs and shocks.