Question about 2004 Lincoln Navigator

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The car was riding low, we found something unhooked in the back of our 2003 mercurty marquis air suspension. we hooked it back up, replaced the shocks (one had a leak) and how the air suspension bags are fully inflated and need to be adjusted down. can this be done?

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Yes. the switch in the back that was unhooked is the adjustment method.

Posted on May 02, 2010

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My 2005 GrandMarquis sits too low in the front even after changing all springs and shocks.


Does your car have air suspension or coil springs. If you change the air springs and it still is low, it may be the air compressor or limit switches. But the front springs are coil and not air, so I see no reason it should ride low if you replaced with the correct parts. Now if you replaced the front shocks and not the coil springs, then the coil springs may need to be replaced.

Feb 25, 2015 | 2005 Mercury Grand Marquis

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Can a faulty drivers door open module cause my 2003 mercury rear air suspension to sag?


Why would you ask that?

Drivers door module has nothing
to do with suspension,only windows
& door locks,limited body functions,
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I would replace all four corners with conventional
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Jan 24, 2013 | 2003 Mercury Grand Marquis

1 Answer

Air suspension compressor sounds bad and wont pump up the rear on a 2003 mercury grand marquis


What is odd is the compressor stopping after so short a time. It may be your only problem.

When you have a leak in the system, the compressor keeps running because the sensors do not signal for it to shut off. On your vehicle it is either being told to shut off prematurely or the compressor is triggering a circuit breaker.

There are ride height sensors on the rear. If the vehicle was lifted without turning off the Air ride, the sensors may have been stretched.

You can check for air leaks in the suspension bags, and air lines using a spray bottle of soapy water. There is also a Master dump valve that should be ahead of the Drivers front tire/radiator well area. It is not a concern unless there is no pressure in the system.

Finally, just as the engine can express diagnostic Codes, so can the suspension. You need a better scanner to do this function. It is the quickest way to find the problem.

Please rate my info.

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1 Answer

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You do have a leak and it is one or more of the air suspension springs, I have seen this same scenario dozens of times on Ford products with air suspension.

Sep 28, 2012 | 2003 Mercury Grand Marquis

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I installed new air suspension bags on the rear. Now the back of the car sits up to high. Can you adjust the air ride sensor to correct this


There is no adjustment. Make sure the sensor is installed correctly. Maybe it came unhooked during the air spring replacement. The sensor snaps onto ball fittings. Also make sure the sensor is still connected properly to the electrical connector. If you can't get it to work, you may need to replace the sensor. Let me know if you have more questions.

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1 Answer

Air suspension on a 2003 mercury marquis doesn't add air when it is called for. the compressor does work when hooked up to an electrical supply.


You may be needing a new compressor. If your replace your compressor and you are still having trouble, you may want to check your lines for a leak. All of these things could cost you lots of time and money. To avoid the headache, check out Strutmasters.com.
I replaced the air system on a couple vehicles for myself and my mom. I was very impressed with the quality and the customer service I received from them.

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1 Answer

Check suspsension came on in my 2003


Sounds like your air ride suspension is either leaking air in the air bags, air lines,etc, or the compressor is not working. If your truck is still under warranty take it to the dealership to get it fixed or with a good mechanic. If it is an air bag or the compressor start checking online for any good, cheap parts because parts for this SUV run expensive.

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1 Answer

1996 merc grand marquis Coil conversion


check out " strutmasters.com " They have what you are looking for. They are on the east coast and have the spring kit. The car will ride just as well and never have a suspension problem again. Trust me on this.

Nov 19, 2009 | 1996 Mercury Grand Marquis

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