1999 Ford Expedition Vehicle Lean

Tiny
BEAUMONT1966
  • MEMBER
  • 1999 FORD EXPEDITION
Suspension problem
1999 Ford Expedition V8 Four Wheel Drive Automatic

My Expedition has 4 wheel air suspension and the front right side is 1"higher than the left side. Is there a procedure for adjusting this that does not require a computer? I understand there are some height sensors but have not been able to locate them
Thanks
Glenn
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Monday, February 16th, 2009 AT 6:02 PM

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Tiny
DAVE H
  • EXPERT
ADJUSTMENTS
INFLATING/DEFLATING AIR SUSPENSION SYSTEM
NOTE:Inflating or deflating air suspension system is necessary to adjust ride height.

Turn ignition on. Connect New Generation Star (NGS) tester (007-00500) to Data Link Connector (DLC). DLC is located under steering column. Select proper vehicle, year and engine type.
Select AIR SUSPENSION CONTROL MODULE under active command mode. Turn on following active commands as necessary:
Select VENT FRNT to lower front of vehicle.
Select LIFT FRNT to raise front of vehicle.
Select VENT REAR to lower rear of vehicle.
Select LIFT REAR to raise rear of vehicle.
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Monday, February 16th, 2009 AT 6:14 PM
Tiny
BEAUMONT1966
  • MEMBER
Thank you for your prompt response. I seems that your solution would raise the front or rear as a unit and not address the lean to the left. It also uses a "computer" which I do not have. Is there a way to raise or lower the left or right side independently?
Thanks
Glenn
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Tuesday, February 17th, 2009 AT 11:14 AM
Tiny
DAVE H
  • EXPERT
The only way to alter the ride height is via diagnostic computer !

AIR SUSPENSION CONTROL MODULE
Air suspension control module may also be referred to as simply control module or 4 Wheel Air Suspension (4WAS) module. Air suspension control module is located behind right center of instrument cluster panel. Module controls air compressor and all system solenoids. Control module also provides power to height sensors. Control module outputs are controlled by monitoring height sensors, Vehicle Speed Sensor (VSS), steering sensor, acceleration input, door ajar signal, 2 transfer case signals (on 4WD models) and brake switch feedback signals. Control module conducts all fail-safe strategies and incorporates self-diagnostic and communication capabilities.
AIR SHOCK ABSORBER
Two system-specific front air shock absorbers are used in the 4WD system. Air shock absorber is not repairable. If one fails, both should be replaced.
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Tuesday, February 17th, 2009 AT 8:30 PM

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