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Rear end has dropped. Has air suspension. - 2001 Ford Expedition

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Most likely needs air bags and a compressor.

Posted on Aug 05, 2009

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Air suspension


Probably not. If you did the compressor would likely pump it back up again. There may be a shrader valve on the pump that you could use to drop the line pressure, and then unplug the compressor.
My guess would be a faulty height sensor.

Aug 29, 2013 | 2006 Buick Lucerne

1 Answer

I have a 2001 town car with a suspension problem. I just replaced the air bags. A month later the pump started to run too much. I tried soapy water but found no leaks.Yesterday the back end droped and the...


Having it hooked up to a factory scan tool would be your best bet . Check for DTC'S diagnostic trouble codes . Without testing ,code scan ,we'd only be guessing .
Very complex , the untrained person hasn't got a pray of fixing this . You have no idea what your dealing with . Vehicle Dynamic Suspension The vehicle dynamic suspension consists of the following components:
  • Rear air suspension control (RAS) module (5A919)
  • Snorkel
  • Drier
  • Air compressor (5319)
  • Air suspension switch (5K761)
  • Solenoid valve (5311)
  • Air spring (5560)
  • Air suspension height sensor (5359)
  • Air line
  • Rear Air Suspension Control Module
    A microprocessor controls the air suspension system. The microprocessor and its supporting hardware are contained in the rear air suspension control module. The rear air suspension control module responds to signals from various sensors in the vehicle to maintain the programmed ride height while the vehicle is either moving or stopped. The rear air suspension control module accomplishes this by opening and closing solenoid valves to control the amount of air in the air spring(s). The rear air suspension control module turns on the compressor by applying voltage through the compressor relay to inflate the air spring(s) and raise the vehicle. The rear air suspension control module opens the vent solenoid to lower the vehicle by releasing air from the air spring(s) in response to signal inputs from the air suspension height sensor(s).
  • Rear Air Suspension Control Module Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1317 Battery Voltage High Rear Air Suspension Control Module GO to Pinpoint Test C . B1318 Battery Voltage Low Rear Air Suspension Control Module GO to Pinpoint Test C . B1342 ECU Is Defective Rear Air Suspension Control Module INSTALL a new rear air suspension control module. REFER to Module-Air Suspension Control . TEST the system for normal operation. C1441 Steering Sensor Channel A Circuit Failure Rear Air Suspension Control Module REFER to Section 211-00 . C1442 Steering Sensor Channel B Circuit Failure Rear Air Suspension Control Module REFER to Section 211-00 . C1722 Air Suspension Height Sensor Power Circuit Short to Power Rear Air Suspension Control Module GO to Pinpoint Test D . C1723 Air Suspension Height Sensor Power Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test E . C1760 Air Suspension Rear Height Sensor High Signal Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test F . C1763 Air Suspension Rear Height Sensor High Signal Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test G . C1765 Air Suspension Rear Height Sensor Low Signal Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test F . C1768 Air Suspension Rear Height Sensor Low Signal Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test H . C1770 Air Suspension Vent Solenoid Output Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test I . C1773 Air Suspension Vent Solenoid Output Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test J . C1790 Air Suspension LR Air Spring Solenoid Output Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test K . C1793 Air Suspension LR Air Spring Solenoid Output Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test L . C1795 Air Suspension RR Air Spring Solenoid Output Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test M . C1798 Air Suspension RR Air Spring Solenoid Output Circuit Short to Ground Rear Air Suspension Control Module GO to Pinpoint Test N . C1813 Air Suspension Vent Request Exceeded Max Timing Rear Air Suspension Control Module GO to Pinpoint Test O . C1818 Air Suspension Air Compressor Request Exceeded Max Timing Rear Air Suspension Control Module GO to Pinpoint Test P . C1830 Air Compressor Relay Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test Q . C1832 Air Compressor Relay Circuit Short to Power Rear Air Suspension Control Module GO to Pinpoint Test R . C1840 Air Suspension Switch Circuit Failure Rear Air Suspension Control Module GO to Pinpoint Test S . C1842 Air Suspension Switch Circuit Short to Power Rear Air Suspension Control Module GO to Pinpoint Test D . C1897 Steering VAPS Circuit Loop Failure Rear Air Suspension Control Module REFER to Section 211-00 . U1041 SPC Invalid or Missing Data for Vehicle Speed

Nov 12, 2017 | 2000 Lincoln Town Car

2 Answers

Air suspension


LEAK IS AIR LINE FROM COMPRESSOR TO REAR SUSPENSION
OR...REAR SUSPENSION COMPONENT FAILURE

Jul 21, 2013 | 2003 Oldsmobile Bravada

2 Answers

Service air ride suspension


Sounds like the valve body for suspension system or a front air hose leak.

Apr 29, 2013 | 2002 Audi allroad

3 Answers

Why won't rear end raise up ?


I have a 2000 Lincoln Town car, had the same problem, it was the rear air suspension/shocks. They are air bags basically that levels your car and it cost about $300.00 for each at the dealer for parts and install but it also has its own motor that inflates and deflates these air bags and I also had to replace that and that cost over $400.00 installed at the dealer.

May 28, 2012 | 2000 Lincoln Town Car

1 Answer

Rear air suspension on 2003 grand marquis is completely down


you might have a leek in the system
check the air hose lines

Nov 07, 2017 | Cars & Trucks

1 Answer

My 98 lincoln navigator rear end has dropped what can it be


Your problem is due to your car's air ride suspension being temporarily off line. This is likely because your air-ride suspension relay is blown. Simply replace the relay module located in a large black box under your hood. Take lid off of black box and find the air suspension module and replace. It will look like a square silver match box plugged into a circuit board. Unplugg it and replace it with a new one.

Oct 22, 2010 | 1998 Lincoln Navigator

1 Answer

My 1995 continental has severe ride problems bounces on every bump in the road front end sits low and rear seems normal


Sounds like the front "air ride suspension" is out.
That works off rubber bags built into the springs. If one or both has developed a leak/hile, it lets the front end (or rear or both) drop to ride on the bottom of the suspension.
Get the wallet out. It's expensive.
Sorry :-(

Jan 09, 2010 | 1995 Lincoln Continental

1 Answer

'98 Expedition Rear suspension leaking


IFYOU FIND THE AIR BAGS ARE LEAKING (USUALLY IS THE PROBLEM) JUST REPLACE IT. LIFT UP THE REAR REMOVE THE TIRE ,DISCONNECT THE PLASTIC LINE THAT GOES TO THE AIR BAG (push the little grommet pull the plastic hose) DISCONNECT THE WIRE CONNECTOR, AND REMOVE THE CLIP AT THE TOP OF THE AIR BAG (JUST PULL IT) AND REMOVE THE AIR BAG (REVERSE TO INSTALL IT)
(YOU CAN REMOVE THE AIR BAG IN ABOUT 40 MINUTES) EACH SIDE.( on ebay you can find replacement to a regular shocks) or air bags

Oct 19, 2017 | 1998 Ford Expedition

2 Answers

VERY LOW REAR END


rear suspension ride leveler mslfunction. Check Air compressor function.

May 27, 2009 | 1992 Lincoln Town Car

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