A Lincoln city Car"s wait suspension uses a small, separate air compressor under the driver’s next left fenderwell, and also air lines run to the waiting bags. On peak of each air bag is a electric valve the serves together a relief valve that enables air come be worn down when activated. The valve senses the lot of air pressure within the air bag to keep both sides equal. This valves are operated via a leveling sensor that is attached to the human body of the car and to the rear axle by a movable arm. As soon as the rear of the vehicle drops because of an raised load, the arm is propelled up, transforming on the wait compressor and also filling the waiting bags come level the car. Once the fill is removed and the eight moves down, indicating the the back of the vehicle has risen, the sensor opens up the valve ~ above the air bags and allows air to escape, lowering the car.

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If the ago of the automobile is low, indicating the the waiting suspension is not working, and the waiting suspension light is on, check the fuse. If the fuse is all right, make certain the air-suspension switch in the stems is on. This switch is supplied when the vehicle is in because that service. Always turn turn off the switch before lifting the car, due to the fact that the sensor will think the car is rising and keep the wait bag valves open, damaging the rear air suspension.

Turn the ignition an essential with the engine off, and also listen for the compressor to which while pushing under on the behind bumper. If it does no come on, check the switch terminals because that power through a circuit tester. If one terminal has power and the various other does not, change the switch. If over there is power, revolve the move to the "Off" position, raise the vehicle and place it on jack stands in the rear. Examine the leveling switch on the axle, making certain it is no bent and also is connected. Use an ohmmeter because that this test. Traction the electric connector turn off the switch. Loosen the eight of the switch from the axle. Check the switch with the ohmmeter by checking throughout both terminals while gradually moving the arm. There should be no continuity v the arm down. As the eight is raised, there must be continuity. If not, change the switch. If there was continuity, attach the arm and also the electric connector.

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Put a floor jack under the axle and also raise the axle so that is just start to background the automobile off the jack stand. Revolve on the ignition. Rotate the waiting suspension move to the "On" position. Use the circuit tester to inspect for power at the leveling switch. If over there is power, revolve the air-suspension move to "Off" and also lower the car. Access the air compressor in the front, under the hood, and check the electrical connector for power. If there is power, inspect for a great ground. If both room good, replace the compressor. If the compressor works and the automobile does not increase in the back, replace the waiting bags.

Don Bowman has been composing for miscellaneous websites and several online magazines because 2008. He has actually owned one auto company facility because 1982 and also has over 45 years of technical experience as a grasp ASE tech. Bowman has actually a organization degree from Pennsylvania State University and also was an officer in the U.S. Military (aircraft maintain officer, pilot, six Air Medal awards, two tours Vietnam).