Question about 1995 Lincoln Town Car

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The compressor on the air suspension wil not come on when the ignition is turned on ,also the check suspension warning light stays on.

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Check switch in trunk make sure it is on.

Posted on May 10, 2010

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  • and some text for you.

  • Thread air suspension inactive

    May 16, 2016 | 2004 Land Rover Range Rover

    2 Answers

    Air suspension light comes on after copmpressor stops running


    Sounds like you need to check the air-bags for a leak. Unfortunately, the compressor may have wore itself out attempting to continuously provide air to the air-bag and may also need replacing. Just my $0.02 worth.

    May 08, 2014 | 2004 Ford Crown Victoria

    3 Answers

    Suspencion down


    Need a repair shop to diagnose the
    air ride system
    Can't guess form here,always need the
    patient

    Aug 08, 2013 | 1994 Lincoln Town Car

    1 Answer

    The dashborad says suspension fault


    Problems with the air suspension seem to be less frequent with the Sport than in previous Range Rover models, but they still do occur. One owner reports "Whenever my RRS is lowered to "access" level a suspension system fault message apprears.". Another reports " Had the RRS back less than 2 hours and another "suspension fault." Also kept receiving messages that the vehicle is raising slowly and vehicle will raise when system cools. Couldn't even drive because it wouldn't raise out of access mode. Anyway, back to the dealer. Picked the RRS up again today-dealer said the EAS compressor was faulty and replaced it. So far everything is ok." Overall, most of the problems seem to be related to bad suspension height sensors or bad compressors. Angus Wade of the Czech Republic had his suspension light come on when in Germany; it started yellow and then red, then disappeared when he stopped and restarted the engine -- and has not happened since. His dealer said they have seen this a bit.

    Weak Compressor: An official Technical Service Bulletin (TSB) LS-204-004 addresses "ELECTRONIC AIR SUSPENSION (EAS) WARNING MESSAGE AND LAMP ILLUMINATION". This deals with the warning message "Suspension Fault - Normal Height Only" message appearing with the Air Suspension Warning Lamp on. Computer diagnosis shows pressure increasing too slowly or unable to pressurize, with no air leaks. The usual problem is the compressor exhaust valve sticking, causing an internal air leak when the compressor is active. The bulletin recommends renewing the air compressor (RQG500090 is the latest specification air compressor with a stronger exhaust valve return spring)and installing and updating the air suspension control module software using WDS disc 13 or later.

    Suspension Fault Message (random): One owner reported getting random suspension fault messages on his brand new RR Sport purchased in June 2006, well after the fix was in for the weak compressor. His suspension Fault message and Suspension Warning Light (Amber) came on after 5 days of ownership. He stopped and restarted the car, which caused the light and message to disappear, but they came on again after 5 minutes. Later the same day, the warnings disappeared again.

    I have heard that on 2006 models, EAS fault messages can be caused by an internal leak in the Air Suspension compressor exhaust valve. The fix is said to be replacing the compressor updating the software.

    Hope helps.

    Sep 09, 2011 | Land Rover LR3 Cars & Trucks

    1 Answer

    The dashboard says suspension fault


    Problems with the air suspension seem to be less frequent with the Sport than in previous Range Rover models, but they still do occur. One owner reports "Whenever my RRS is lowered to "access" level a suspension system fault message apprears.". Another reports " Had the RRS back less than 2 hours and another "suspension fault." Also kept receiving messages that the vehicle is raising slowly and vehicle will raise when system cools. Couldn't even drive because it wouldn't raise out of access mode. Anyway, back to the dealer. Picked the RRS up again today-dealer said the EAS compressor was faulty and replaced it. So far everything is ok." Overall, most of the problems seem to be related to bad suspension height sensors or bad compressors. Angus Wade of the Czech Republic had his suspension light come on when in Germany; it started yellow and then red, then disappeared when he stopped and restarted the engine -- and has not happened since. His dealer said they have seen this a bit.

    Weak Compressor: An official Technical Service Bulletin (TSB) LS-204-004 addresses "ELECTRONIC AIR SUSPENSION (EAS) WARNING MESSAGE AND LAMP ILLUMINATION". This deals with the warning message "Suspension Fault - Normal Height Only" message appearing with the Air Suspension Warning Lamp on. Computer diagnosis shows pressure increasing too slowly or unable to pressurize, with no air leaks. The usual problem is the compressor exhaust valve sticking, causing an internal air leak when the compressor is active. The bulletin recommends renewing the air compressor (RQG500090 is the latest specification air compressor with a stronger exhaust valve return spring)and installing and updating the air suspension control module software using WDS disc 13 or later.

    Suspension Fault Message (random): One owner reported getting random suspension fault messages on his brand new RR Sport purchased in June 2006, well after the fix was in for the weak compressor. His suspension Fault message and Suspension Warning Light (Amber) came on after 5 days of ownership. He stopped and restarted the car, which caused the light and message to disappear, but they came on again after 5 minutes. Later the same day, the warnings disappeared again.

    I have heard that on 2006 models, EAS fault messages can be caused by an internal leak in the Air Suspension compressor exhaust valve. The fix is said to be replacing the compressor updating the software.

    Hope helps.

    Sep 09, 2011 | 2006 Land Rover LR3

    1 Answer

    2004 lincoln navigator air suspension my truck is lowered from th


    could be faulty compressor which pumps up the suspension,is it leaking from anywhere,causing the pump to work too hard,has it just packed up,check fuses but probably compressor

    Oct 26, 2009 | 2004 Lincoln Navigator

    1 Answer

    Air Suspension system Problem 1990 Lincoln Towncar


    Unplugging the Connector will cause the Check Suspension light to come on as its listed as a fault as it cant run.

    But with it unplugged the compressor shouldnt been able to start. If you want to kill the compressor pull its relay from the engine bay. located above the battery.

    But i'd suggest correcting the fault as if those bags do pop your going to end up being grounded. as the rear will drop a fair bit!

    Jul 16, 2009 | 1990 Lincoln Town Car

    2 Answers

    Can any one tell me were how i can find the automatic level control on my 1994 town car


    Description and Operation The rear air suspension:
    • Is an air-operated, microprocessor-controlled, suspension system.
    • Replaces the conventional rear coil spring suspension.
    • Provides low spring rates for improved ride and automatic rear load leveling.
    • Is standard equipment on the Town Car.
    • Is available as optional equipment on Crown Victoria and Grand Marquis.
    The rear air suspension system has the following features:
    • The system is operational with the ignition switch in the RUN position.
    • Automatic rear load leveling has limited operation for one hour after ignition switch is turned to OFF.
    • The air suspension switch, located on the right side of the luggage compartment, must be turned OFF when the vehicle is on a hoist, being towed or jump started.
    • The Air Suspension warning indicator is located in the instrument panel, to the right of the speedometer.
      • The warning indicator flashes five times and then stays on when service switch is turned off or a system malfunction is detected.
    • The rear leveling system operates by adding or removing air in the springs to maintain the level of the vehicle at a predetermined rear suspension D ride height dimension, and is controlled by a control module (5A919) .
    • The rear air suspension control module also controls the electronic variable orifice (EVO) steering.
    • Refer to Section 11-02 for Description of the EVO steering system.
    • Air required for leveling the vehicle is distributed from the air compressor to the rear air springs by a nylon air line which runs from the compressor air dryer (5346) through a Y-fitting to each individual air spring.


    Suspension, Computer Controlled—Town Car

    c441c13.gif
    Item Part Number Description 1 9C392 Compressor Relay Power Junction Block 2 5A897 Air Line (Attached to Brake/Fuel Bundle) 3 5319 Air Compressor With Regenerative Air Dryer and Vent Solenoid 4 5A897 Air Line to Compressor 5 5K761 Air Suspension Service Switch 6 14489 Data Link Connector 7 — Quick Connect 8 — To LH Air Spring 9 — From Compressor 10 — Y-Fitting (Part of 5A911) 11 — To RH Air Spring 12 5A908 Heat Shield 13 5A966 Spring Retainer Clip 14 5560 Rear Spring 15 5359 RearAir Suspension Height Sensor 16 5A919 Control Module 17 14018 Air Spring Solenoid

    Control Module Power and Ground The control module (5A919) has the following features:
    • Power is provided by Circuit 418 and is controlled by the air suspension switch.
      • The air suspension switch is powered through a 15 amp fuse in Circuit 296 in Town Car.
      • AIR SUSPN PUMP (30A MAXI) fuse provides this power through Circuit 414 in the Crown Victoria/Grand Marquis.
    • Control module ground is provided through control module wire harness Pins 6 and 21, to the RH inner quarter panel sheet metal, near the control module .
    ---------------------------------
    Weight Added When weight is added to the vehicle:
    • The air suspension height sensor (5359) length is reduced from trim length, sending a "rear is low" signal to the control module (5A919).
    • The control module then turns the compressor on by grounding the compressor relay control Circuit 420. This restores the rear of the vehicle to trim position.
      • Battery voltage is provided to the relay coil by Circuit 414.
    • The control module opens the spring solenoid valves (5311) by switching Circuits 416 and 429 to ground. This allows pressurized air to enter the springs.
      • Battery voltage is provided to the air spring solenoid valves by Circuit 414.
    • Compressed air flows from the compressor, through the compressor air dryer (5346) airlines and spring solenoid valves into the rear springs (5560).
    • As the rear springs raise the rear body height, the air suspension height sensor increases in length until the preset trim height is reached.
    • The control module then turns off the compressor (through the relay) and closes the air spring solenoid valves.
    ----------------------------------------------------------------------
    Weight Removed When weight is removed:
    • The air suspension height sensor (5359) length is increased from the trim length, sending a "rear is high" signal to the control module (5A919).
    • The control module then opens the vent solenoid valve (located in the compressor assembly) by switching Circuit 421 to ground and opens the solenoid valves (5311) by switching Circuits 416 and 429 to ground. This restores the rear of the vehicle to trim position.
    • Compressed air flows from rear springs (5560), through the air spring solenoid valves, air lines, compressor air dryer (5346), and out the vent solenoid valve.
    • As the body lowers, the air suspension height sensor length decreases until the preset trim height is reached.
    • The control module then closes the vent and solenoid valves.
    -----------------------------------------
    Control module operates as follows:
    • In general the control module uses a 45-second averaging interval to determine when compress and vent operations are needed.
    • However, door courtesy lamp switch (13713) inputs can override the 45-second averaging interval so compress and vent operations can begin immediately, if needed.
    • The 45-second averaging interval is used to keep the control module from making unneeded corrections.
    • When a vehicle at the correct rear trim height hits a bump, the air suspension height sensor output will read low and high in addition to trim until the oscillations die out.
    • If the control module were to correct for these "bump induced readings", system duty cycle would increase unnecessarily.
    • The 45-second averaging interval not only eliminates corrections due to bumps, but also eliminates unneeded corrections resulting from braking, accelerating, and turning. The control module tabulates the air suspension height sensor readings, and does not begin a compress or vent operation until the air suspension height sensor (5359) reads low or high for 45 seconds consistently.
    • There are more restrictions on vent operations than there are on compress operations.
    • To eliminate the chance of catching a door on a curb as the vehicle vents down, the control module will not allow any venting to occur when a door is open.
    • The control module does not allow any vent operations for the first 45 seconds after the ignition switch (11572) has been turned to RUN.
      • Even if a vehicle is extremely high in the rear, DO NOT expect it to vent until the ignition switch has been turned to RUN for 45 seconds.

    Jun 24, 2009 | 1994 Lincoln Town Car

    2 Answers

    Where are the leveling sensors located on a 2003 Navigator?


    There is one at each wheel. here is some info

    Vehicle Dynamic Suspension The four wheel air suspension system is comprised of the following components:
    • service switch
    • control module
    • two front height sensors
    • one rear height sensor
    • compressor and drier assembly (includes vent solenoid)
    • air lines
    • front and rear air spring and shock absorber assemblies
    • four air spring solenoids
    s3j~us~en~file=ani_caut.gif~gen~ref.gif WARNING: The service switch for the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the jack storage area in the rear of the passenger compartment. Failure to do so may result in unexpected inflation or deflation of the air springs which may result in shifting of the vehicle during these operations.
    s3j~us~en~file=ani_caut.gif~gen~ref.gif WARNING: Do not remove an air spring under any circumstances when there is pressure in the air spring. Do not remove any components supporting an air spring without either exhausting the air or providing support for the air spring to prevent vehicle damage or personal injury.
    Air Suspension Pneumatic Diagram 17d59a6.gif
    Item Part Number Description 1 5319 Air compressor and drier 2 5B322 Air line T-fitting 3 5B321 Air line union 4 — Air line Y-fitting 5 18945/5311 Air spring and solenoid

    Suspension Height Sensor Removal and Installation
    NOTE: Front shown, rear similar
    1. s3j~us~en~file=ani_caut.gif~gen~ref.gif WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the LH quarter trim panel. Failure to do so may result in unexpected inflation or deflation of the air springs which may result in shifting of the vehicle during these operations.
      Raise and support the vehicle. For additional information, refer to Section 100-02 .
    1. Disconnect the sensor arm. 721ed10.gif
    3. Remove the bolts and the sensor. b198e3c.gif
    4.
    1. Disconnect the electrical connector.
    ---------------------------------------------------------------------------------------------

    Ride Height Adjustments
    Special Tool(s) s3j~us~en~file=st2332a.gif~gen~ref.gif Worldwide Diagnostic System (WDS)
    418-F224

    New Generation STAR (NGS) Tester
    418-F052 or equivalent scan tool
    Inflation and Deflation of the Air Suspension System
    1. NOTE: Make sure that the air suspension switch is in the ON position
      NOTE: Make sure that a battery voltage of at least 11 volts is maintained while carrying out this procedure.
      Turn the ignition switch to the ON position.
    1. Connect scan tool to the data link connector (DLC).
    1. Select Air Suspension Control Module under Active Command Mode:
      • VENT FRNT to deflate the front down.
      • LIFT FRNT to inflate the front up.
      • VENT REAR to deflate the rear down.
      • LIFT REAR to inflate the rear up.
    Calibration
    Ride Height Resetting
    1. NOTE: Make sure that the air suspension switch is in the ON position
      NOTE: Make sure that a battery voltage of at least 11 volts is maintained while carrying out this procedure.
      Turn the ignition to the ON position.
      • Exit the vehicle, close all doors and allow the system to vent the vehicle down to kneel height (approximately 45 seconds).
    1. With the ignition remaining in the ON position, shift the vehicle into DRIVE and then back to PARK.
      • Exit the vehicle, close all doors and allow the vehicle to pump to trim (approximately 45 seconds).
    1. Measure the ride height. For additional information, refer to Section 204-00 .
    1. Open the LF door.
    1. Connect scan tool to the data link connector (DLC).
    1. While outside of the vehicle, select the proper vehicle year, model and engine type.
    1. Select 4WAS module.
    1. Using the active command mode, vent or lift the vehicle to achieve the correct ride height.
    1. Select the "Save Calibration Values (Store Ride Height)" scan tool command to calibrate the 4WAS module.
    -------------------------------------------------------------------------------

    Jan 09, 2009 | 2003 Lincoln Navigator

    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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