Question about 2000 Lincoln Navigator

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I have a 2000 lincoln navigator, 4wd, and my rear air shocks are deflated. I parked the car for a few days, and then one day it raised back up, but then the next day, back down to the frame...both sides by the way. I took out the compressor and tested it with a couple wires hooked up to the battery and it came right on. Since both rear shocks are deflated, would it be a AIR SUSPENSION REAR MODULE, or something else, maybe a relay, or sensor?

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  • junkdump101 Aug 19, 2009

    UPDATE: This is a daily driver, so it has not been sitting, I only parked it for a few days, because the air shocks were deflated and it was very aggravating to drive on the frame! So there had to be a reason that one day it was on the frame, then the next it was re inflated, then the next day back down to the frame. At first, I thought it was a leak in the rear air line, there is a single air line that runs to the back then splits at a T fitting to both rears. By the way, do NOT try and pull the hose out of the T fitting like I did (when I tried to air up my shocks manually, stupid mistake), it only goes in once and if you pull it out, you ruin the seal. I had to splice in a new t with hose clamps, it holding up fine (cost 15 bucks at the dealer for the new T fitting with hoses attached). ANYWAY, like i said, the pump tested out fine, so it had to be something else. A mechanic friend said it was likely the computer module or the relay. But in my investigation, I found out that the whole system wont even work if one of the door sensors are sticky! In other words, if a door is not shut all the way, the air shocks WONT work. Sooooo, I sprayed PB Blaster in all of the doors and rear window hinges and lock latches. The last one I sprayed was the rear window and as soon as I closed it, the air shocks immediately began to air up!!! By the way, DO NOT use WD40, apparently it works fine initially, but then turns sticky, which you do not want. ONLY use PB Blaster. If your problem is similiar, and it is not the door sensors, I would highly recommend the solid state relay, which is located next to the horn, under the bumper on the right side. It is a little smaller than a pack of cigarettes, and has a large plug inserted into one end. it is bolted to the frame with 2 small screws. YOu can get it from a dealer for around 100 bucks.

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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 mddoc13@yahoo.com 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.

Posted on Aug 17, 2009

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It could be the pressure sensor. Or there may be a leak in the system. And since the vehicle is parked, it may just be saving battery by not running the compressor that often. Bring it to a quite place, and let it fill up. Shut if off and crawl underneath, and listen for a hissing noise. Seals can leak so easily, exp if they dry out. And being nearly ten years old its possible you just have a bad seal on one of the air lines. Assuming it uses rubber seals on the lines.

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

  • 61 Answers

SOURCE: REAR AIR SHOCKS

First, you may have leaks in your bags, causing your suspension to drop. The other possibility is that your rear suspension level sensor is faulty, causing the suspension to readjust itself incorrectly.

Posted on Jul 24, 2009

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