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Location of air suspension parts 99 expedition

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6ya6ya
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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: 1997 expedition 2 wheel drive air suspension problem

There are ride height sensors in the rear that send a signal to the ride height/load leveling control module, one of these ,may be defective. Have Ford dealer run an active test of the system, they will find out what the part is that has failed, otherwise you are guessing, that equals wasted $$$

Posted on Nov 04, 2008

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SOURCE: how to change rear air suspension on 1999 ford

The air suspension can be a tricky thing to mess with. When we were looking to replace just one of the rear bags it was going to be costly. My husband did some checking around online and found Strutmasters.com.
They offered great products at a great price and we were very pleased with the outcome of the replacement of the non air system. If you are replacing the entire system you are looking at a pretty penny. I would check Strutmasters out before you replace the air on your Expedition.

Posted on Jul 05, 2010

  • 18 Answers

SOURCE: how to change rear air suspension on 1999 ford

Change the air suspension to a non air conversion system from Strutmasters. Their kit will save you lots of money and time. Check them out!

Posted on Jul 13, 2010

  • 6 Answers

SOURCE: no work the air compressor of rear suspension 1998

The less expensive way to fix your air suspension problem would be to give Strutmasters a call. I called them about my 98 Ford Expedition and the Customer Service Team was very helpful through out the entire process, even helped me with the installation - which was actually very easy to. I converted all 4 wheels over to their passive conversion kit. I love it!

Posted on Jul 20, 2010

clifford224
  • 1975 Answers

SOURCE: where is the Air Suspension Height Sensor located in the 2000ford expedition

There is atcually a front and rear one. Below is a picture of treir locations. I don't have a good ome of the front one but it is located on the front left running board. Hope this helps.....

1_20_2012_11_40_51_am.jpg1_20_2012_11_41_08_am.jpg

Posted on Jan 20, 2012

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2010 Ford Expedition Can someone tell me where the air suspension compressor relay is? Not talking about a relay in the fuse box but the other one that has two bolt holes in it and a pigtail running in it....


I have not looked at your part but there usually is a plastic panel cover on one of the rear quarter panels inside the rear cargo area. Sometimes it is paired with the inertia switch relay.

Wanted to inform you that some of the better scanners can diagnose Air suspension problems. Some of the big auto-parts stores offer free scans but few use the better scanner. Call ahead.

May 14, 2018 | Ford Cars & Trucks

1 Answer

Location of air suspension compressor in a 2008 ford expedition


trent, check underneath the washer fluid resevoir or just a few inches towards the front.

Nov 24, 2013 | 2008 Ford Expedition Eddie

2 Answers

I have a 99 expedition, air ride suspension went out. Changed the air compressor and still will not air up. Checked the relay and seems to be working. One other time this happened and friend changed a...


Your best bet take it an have it diagnosed ! This is computer controlled an may have DTC'S - diagnostic trouble codes stored !
C1724 Air Suspension Height Sensor Power Circuit Failure Air Suspension Control Module GO to Pinpoint Test F . C1726 Air Suspension Rear Pneumatic Failure Air Suspension Control Module GO to Pinpoint Test G . C1760 Air Suspension Rear Height Sensor High Signal Circuit Failure Air Suspension Control Module GO to Pinpoint Test H . C1770 Air Suspension Vent Solenoid Output Circuit Failure Air Suspension Control Module GO to Pinpoint Test I . C1790 Air Suspension LR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module GO to Pinpoint Test J . C1795 Air Suspension RR Air Spring Solenoid Output Circuit Failure Air Suspension Control Module GO to Pinpoint Test K . C1830 Air Suspension Compressor Relay Circuit Failure Air Suspension Control Module GO to Pinpoint Test L
Symptom Chart Condition Possible Sources Action
  • No communication with the air suspension control module
  • CJB Fuse 4 (15A), 6 (5A) and 20 (5A).
  • Circuitry.
  • Air suspension control module.
  • Air suspension switch.
  • GO to Pinpoint Test A .

You replaced a part that you probably didn't need !
  • The compressor is inoperative
  • BJB Fuse 109 (50A).
  • Air compressor assembly.
  • Circuitry.
  • Air suspension relay.
  • GO to Pinpoint Test Q .

There is a lot to this system an guessing as to what the problem is ,isn't the way to fix it.
Measure the voltage between air compressor relay C1000 Pin A, Circuit 1053 (LB/PK), harness side and ground.
  • Is the voltage greater than 10 volts?
Yes GO to Q3 .

No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
Measure the resistance between air compressor C1000 Pin B, Circuit 538 (GY/RD), harness side and air compressor assembly C194M Pin 4, Circuit 538 (GY/RD), harness side.
  • Is the resistance less than 5 ohms?
Yes GO to Q4 .

No REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
Air Suspension Height Sensor
One air suspension height sensor is mounted on the vehicle. The air suspension height sensor sends a voltage signal to the air suspension control module. The output ranges from approximately 4.75 volts at minimum height (when the vehicle is low or in full jounce), to 0.25 volts at maximum height (when the vehicle is high or in full rebound). The air suspension height sensor has a useable range of 80 mm (3.2 in) compared to total suspension travel of 200-250 mm (8 to 10 in) at the wheel. Therefore, the air suspension height sensor is mounted to the suspension at a point where full rear suspension travel at the wheel is relative to 80 mm (3.2 in) of travel at the air suspension height sensor. The air suspension height sensor is attached between the No. 5 frame crossmember (upper socket) and the panhard rod (lower socket). Replace the air suspension height sensor as a unit.
When the air suspension height sensor indicates that the rear of the vehicle is lower than trim under normal driving conditions, the air compressor will turn on and pump compressed air to the air springs. When the sensor indicates that the rear of the vehicle is raised above trim under normal driving conditions, this will cause the air to be vented from the air springs to lower the vehicle back to its trim height level.
Compressor Relay
The compressor relay is energized by the air suspension control module to allow high current to flow from the battery to the compressor motor.
  • A solid state relay is used in the air suspension system for air 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.
  • Air Suspension Control Module
    NOTE: The 4WAS air suspension control module is used for the RAS system. The internal processor recognizes external circuitry to determine if it is installed in a 4WAS or a RAS equipped vehicle.
    NOTE: The air suspension control module is calibrated with information from the air suspension height sensor. A new or exchanged air suspension control module requires a ride height adjustment calibration process to be performed.
    The air suspension control module controls the air compressor motor (through a solid state relay), and the air spring solenoids. The air suspension control module also provides power to the air suspension height sensor. The air suspension control module controls vehicle height adjustments by monitoring the air suspension height sensor, 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 monitors and controls the air suspension system through a 32-pin two-way connector. The air suspension control module is keyed so that the air suspension control module 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.

Jun 09, 2017 | 2000 Ford Expedition

1 Answer

Location of rear air suspension relay 99 expedition


The system is fused only, it is located in the underhood fuse box.
Fuse #109 50A** Air Suspension Compressor

Jun 01, 2012 | 2000 Ford Expedition

1 Answer

I have an 2004 Ford Expedition Eddie Baurer, Check Air Suspension light is on. The suspension is not working at all truck rides very low and bounces every time a bump is hit, what could be wrong?


Any part of the air ride suspension system could have failed.
I would replace the air suspension, with a conversion, such as strutmaster or similar product,other wise you have to diagnose your current system and repair.

Oct 04, 2010 | 2004 Ford Expedition

2 Answers

Check suspension light is on


I believe this light comes on when there is one of several issues. Some symptoms are: Ball Joints worn, tie rod ends, vibration, bad tire(low Pressure also), alignment, pulling to left/right, shocks F/R check some of these and you may locate why light came on. Wayne

Mar 14, 2010 | 1997 Ford Expedition

1 Answer

99 model Expedition At first, the air bag was maximum high yesterday. so i disconnected the air supply hose from the bag to release all the air. after that, the air compressor doesn't work anymore... Now,...


I would say that the leveling sensor is most likely bad. But it won't matter untill you figure out why the compressor isn't working. You need to pick up a service manuel at the parts store, if you don't want to buy one somtimes you can check one out at the library. I am guessing and thats all I'm doing is that the leveling sensor is in front of the compressor and is not giving information to the compressor. Good Luck.

Jul 16, 2009 | 2000 Ford Expedition

2 Answers

99 expedition two wheel drive passenger side goes up higher than the drivers side.uneven ride! whats a ride height sensor?


height sensor is a sensor that control air compressor on air shock.it keep vechicle level.if height sensor senses distance between frame and suspension .it will admit air to shock by controling the air compressor.check the air shock on driver side.BESURE TO TURN OFF ELECTRICAL POWER TO AIR SUSPENSION BEFORE RAISING VECHICLE.

Jul 10, 2009 | 2000 Ford Expedition

1 Answer

Where is the relay for the air pump located on the air suspension?


Located front center of engine compartment, above the right cooling fan.

May 23, 2009 | 2000 Ford Expedition

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