Question about 2001 Lincoln Town Car

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Air suspension motor running almost all the time

Air suspension motor runs almost every 10 mins then stops.
does this mean motor is on its way to be broken??
Motor almost running all the time. I think this is getting serious!
110,0000 on mileage. Has been a great car..hate to trade in!

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  • Anonymous Mar 08, 2009

    air suspension running often every five min. or so

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  • Lincoln Master
  • 783 Answers

I would suspect you have a leak in the system most likely at the air bags themself. They are probably starting to dry rot at the bottom of them due to age and mileage. If you have access to a lift and raise the car up into the air so the bottom of the bags are exposed, when on the ground the bag folds at the bottom so it you may not be able to see this otherwise. Inspect the bottom of the bags for cracks in the rubber.

Posted on Feb 04, 2009

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Don't know if air suspension is working on 1999 buick lesabre


If it is working, you will most likely hear the pump running when the car starts. It should run for maybe a minute and shut off. If it runs for like 10 min then you probably have a leak. If it doesn't run when you turn it on, put some weight on the rear of the car and you should hear it kick on. If it is not running then either, you probably have a sensor or pump problem. Try these things first.

Nov 19, 2013 | 1999 Buick LeSabre

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What are the warning signs, if any, when the leveler (rear air suspension) is about to go out?


If a slow air leak has developed in either an air bag or in any of the tubing (there's a lot) or in the valve at the air pump, you will hear the air pump running more often.

Eventually, the pump will be unable to raise the car to the required height (working against the leak) within the time-out period (about a minute) and then it will give up, stop pumping, and a light on the dash will come on indicating an air suspension problem (or maybe on your relatively newer car, the digital dash may show an error message - I don't know).

I've had an '88, a '91, and a '94. Both the '91 and the '94 had air suspension faults at various times, and none of them were air bag leaks. I've had the valve at the pump stick and/or/leak on both cars, and the tubing spring a leak on one as well. Apparently the air bags are pretty well made and don't fail as often as the other components (in my experience).

Oct 20, 2011 | 1998 Lincoln Town Car

1 Answer

What does the air suspension light mean?


It could mean the compress motor has running longer than usual, or you just forgot to turn the switch (in trunk) back on. Usually it means there is a leak in the suspension air bag so the motor keeps pumping. Checked the 2 air bags just like check flat tires, put soapy water and see if bubbles come out. I bought the bags online for about $95 each.

Sep 24, 2010 | 1991 Lincoln Town Car

1 Answer

The air suspension takes a long time to air up if you start the car and let it run it will pump up when your driving it sometimes 15-20 min.


you have a leak either in one of the lines to the air bags/shocks or a bad shock or air leak at the air pump lines

Jan 21, 2010 | 2005 Lincoln Navigator

1 Answer

"check air suspension" message appears after 10 min. of driving


your air bags have a hole in them and your compressor might need a new fuse, relay switch, or you might need new compressor

Sep 15, 2009 | 1997 Lincoln Town Car

1 Answer

99 expedition air suspension compressor runs every couple minutes


It is normal for some cycling of the compressor as the ride heights change and the compressor vents and fills air springs. Info:

Air Compressor
The air compressor:
  • Is not interchangeable with the rear air suspension (RAS) air compressor.
  • Consists of the compressor and vent solenoid; neither are replaceable as individual items.
  • Is a single cylinder electric motor driven unit that provides pressurized air as required.
  • Is powered by a solid state relay, which is controlled by the air suspension control module.
  • Passes pressurized air through the compressor air drier that contains silica gel (a drying agent). Moisture is then removed from the compressor air drier when vented air passes out of the system during vent operation.
  • The drier may be replaced separately.
  • The drier has dual ports and is not interchangeable with the RAS drier.
The vent solenoid:
  • Allows air to escape from the system during venting actions.
  • Is part of the air compressor cylinder head.
  • Shares a common electrical connector with the air compressor motor.
  • Is enclosed in the cylinder head casting, which forms an integral valve housing that allows the valve tip to enter the pressurized side of the system.
  • Has an O-ring seal that prevents air leakage past the valve tip.
  • Opens when the air suspension control module determines lowering is required.
  • Provides an escape route for pressurized air when system pressures exceed safe operating levels.
  • Has a 1792 kPa (260 psi) internal relief valve.
  • Is installed with the air compressor as a unit.
Compressor Relay
A solid state relay is used in the air suspension system for compressor control. The relay incorporates a custom power metal oxide semi-conductor field effect transistor (MOSFET) and ceramic hybrid circuitry. The relay switches high current loads in response to low power signals and is controlled by the logic of the air suspension control module.
The compressor solid state relay is energized by the air suspension control module to have high current flow from the battery to the compressor motor.
Control Module
NOTE: The 4WAS control module is also used for the RAS system. The internal processor recognizes external circuitry to determine if it is installed in a 4WAS or a RAS system.
NOTE: The air suspension control module is calibrated with information from the air suspension height sensors. A new or swapped air suspension control module requires the ride height adjustment calibration process to be performed.
A microcontroller-based electronic air suspension control module controls the air compressor motor (through a solid state relay) and all system solenoids. The air suspension control module also provides power to front and rear height sensors. The air suspension control module controls vehicle height adjustments by monitoring the two height sensors, vehicle speed, a steering sensor, acceleration input, the door ajar signal, transfer case signals and the brake pedal position (BPP) switch. The air suspension control module also conducts all fail-safe and diagnostic strategies and contains self-test and communication software for testing the vehicle and related components.
The air suspension control module is interchangeable between the RAS and 4WAS system.
The air suspension control module monitors and controls the system through a 32-pin two-way connector. The air suspension control module is keyed so that it cannot be plugged into an incorrect harness. There are two sides of the harness connection to the air suspension control module. Each is uniquely colored and keyed to prevent reversing the connections.

Pressure Relief Valve
The pressure relief valve (PRV) protects the rear air suspension components by venting the system to a specific pressure in the case of a system malfunction. The system will decrease the pressure to an acceptable level to maintain vehicle height. In the normal operation mode with normal system pressure, the PRV is constantly closed and does not have any effect on the system performance or function. The PRV is replaceable without any air lines.
  1. If the concern remains after the inspection, use New Generation STAR (NGS) Tester connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute On-Demand Self-Test diagnostics for the air suspension control module.
    • If the On-Demand Self-Test is passed and no DTCs are retrieved, go to the Symptom Chart to continue diagnostics.
    • If DTCs are retrieved, go to Air Suspension Control Module Diagnostic Trouble Code (DTC) Index in this section.
    • If the air suspension control module cannot be accessed by NGS Tester, go to Pinpoint Test A.
Self-Test
Verify that the following conditions are met before running the On-Demand Self-Test.
  • All doors, liftgate, and liftgate glass must be closed.
  • The transmission is in PARK.
  • The BPP switch is not pressed during the test and the parking brake is not set.
  • The accelerator pedal is not pressed during the test.
  • The vehicle is not in 4L mode.
  1. Fulfill the pre-conditions.
  1. Install a battery charger for the On-Demand Self-Test to prevent battery drain.
  1. Run the air suspension On-Demand Self-Test.
  1. Record all listed DTCs.
  1. Retrieve stored DTCs.
  1. Troubleshoot any On-Demand Self-Test DTCs first.
  1. Retest and clear DTCs after repairs.

Apr 13, 2009 | 2000 Ford Expedition

2 Answers

1997 Lincoln Continental Suspension Conversion Problem


It could be a wheel speed sensor that went out or something... When working with the wiring, something could have just gotten crossed or tapped to get these codes as well. The compressor shouldnt be running anymore if everything was tied off properly. Take it in somewhere and have the codes cleared and that should fix the problem hopefully. I know AutoZone has a reader, but I do not know if they have they ability to clear the codes.
I hope this helps.

Feb 22, 2009 | 1997 Lincoln Continental

3 Answers

Air Compressor Motor Going Off?


What is probably going on is the air suspension has a leak so the compressor is breaking down. So it will run at odd times trying to make up for the times it can not run. What you need to do is look for a conversion kit. The conversion will stop all problems that you are having now and you will never have to worry about it again. I would recommend strutmasters.com. They have great prices and there kits are guaranteed to last the life of the car.
http://www.strutmasters.com/cadillac-suspension-parts-s/12.htm

I hope I was of some help

Good Luck!!!

Feb 14, 2009 | 2002 Cadillac Escalade

3 Answers

Air suspension motor running


If you have a hole or crack in your airbag the compressor has to work extra hard to try to blow it up (like blowing up a balloon with a hole in it) I would recommend checking out strutmasters.com they have some great kits for the Ninety Eight. There kits will eliminate any problems with the suspension. It is a permanent fix. these convert you from the airbag to a powder coated American made steel coil spring that is guaranteed to last the life of the car. And for a very affordable cost. I added the link below so you can check it out.
http://www.strutmasters.com/oldsmobile-suspension-parts-s/85.htm

Hopefully this will help

Good Luck!!!

Dec 27, 2008 | 1992 Oldsmobile Ninety Eight Regency

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