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Re: air suspension not wrking
Check the air suspension switch in the trunk, should be on the right hand side facing the trunk. make sure it's on. when ever you raise the vehicle, you have to turn it off. someone might have forgot to turn it back on. good luck.
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First check to see if the pump runs when the key is turned on, if not check the 30 amp fuse in the fuse box right side under the hood. If the fuse is blow the pump may have over heated from running longer than it should. As old as this car is it most likely has dry rotted air bags. If the pump runs spray the rear bags with windex and look for any bubbles should be none. This could get expensive if the pump is already gone.
The level sensor may have detached. aIf so, reattach it, go into the trunk and find the on/off switch for the suspension and turn it off for a few minutes, then turn it back on. If it is not detached, you will need someone with a scan tool to manually cycle the raise/lower functions
to restore level condition, while looking at sensor readings to see of they are changing accordingly.
Air suspension needs compressed air for the control of Air Springs (Air Spring is a cylinder like thing which goes up and down when air is pumped in and out of it). For pumping in and out the air, air compressor needs to be switched ON/OFF. Compressor relay connects and disconnects the compressor motor from the power supply ( battery). -----------------
air ride suspension compressor located under the air filter box .
the Air compressor clutch relay location is fitted to the left hand inner wing (when viewed from the the driving seat). ------------------- the compresser is located on the left hand side of the car under the hood. once you open the hood remove the air cleaner housing and windshield washer resivor. there is a panel that you lift up under both of thoese that is where the compresser is located -------------
The air suspension uses a small, separate air compressor under the driver's side left fenderwell, with air lines running to the air bags. On the top of each air bag is a electrical valve. This is a relief valve that allows air to be exhausted when activated, and which senses the amount of air pressure within the air bag to keep both sides equal. These valves are operated via a leveling sensor that is attached to the body of the car and to the rear axle by a movable arm. When the rear of the car drops due to increased load, the arm is pushed up. When the arm is pushed up, it turns on the air compressor and fills the air bags to level the car. When the load is removed and the arm moves down, indicating that the back of the car has risen, the sensor opens the valve on the air bags and allows air to escape, lowering the car.
If the back of the car is low, indicating that the air suspension is not working, and the air suspension light is on, check the fuse first. If the fuse is all right, check the air suspension switch in the trunk and make sure it is on. This switch is used when the car is in for service. Always turn off the switch before lifting the car, because the sensor will think the car is rising and keep the air bag valves open, ruining the rear air suspension.
Turn the ignition key with the engine off. Listen for the compressor to come on while pushing down on the rear bumper. If it does not come on, test the switch terminals for power, using a circuit tester. If one terminal has power and the other does not, replace the switch. If there is power, turn the switch to the off position, raise the vehicle and place it on jack stands in the rear. Inspect the leveling switch on the axle, making sure it is not bent and is connected. Use an ohmmeter for this test. Pull the electrical connector off the switch. Loosen the arm of the switch from the axle. Test the switch with the ohmmeter by checking across both terminals while slowly moving the arm. There should be no continuity with the arm down. As the arm is raised, there should be continuity. If not, replace the switch. If there was continuity, connect the arm and the electrical connector.
Put a floor jack under the axle and raise the axle to the point where it is just beginning to lift the car off the jack stand. Turn on the ignition. Turn the air suspension switch to the "on" position. Use the circuit tester to check for power at the leveling switch. If there is power, turn the air suspension switch to "off" and lower the car. Access the air compressor in the front, under the hood, and check the electrical connector for power. If there is power, check for a good ground. If both are good, replace the compressor. If the compressor works and the car does not rise in the back, replace the air bags.
if you're talking about a 94 town car, it's under the hood in the 'engine compartment fuse box' my book says fuse "U" is air suspension. Also beside the fuses are four relays. the second one down is 'air suspension relay'. hope this helps.good luck.if i fixed ya please rate me. thanks
on the passenger side inside the wheel well there is a high current relay for the air compressor it is a silver metal relay assy 4 wire plug two smaller wire are the relay power two larger wires are compressor feed. if you jump the two larger wires and the compressor works check the smaller wires for power and ground if ok the relay is bad. usually these relays go bad due to compressor drawing high current and usually need to be replaced
This is a very common problem with all Lincolns. The air ride suspension are marketed as a luxury-comfort item but most do not know that they have a 100% failure rate and are designed to fail as shortly after the warranty expires as possible. The air bags that support the weight of the vehicle are not designed to withstand temperatures below 40 degrees or above 94 degrees and are very prone to dry rot. Once the bags start getting tiny cracks and leaks they start overworking the compressor. (Picture trying to blow up a balloon with holes in it.. you will try for as long as you can but will ultimately have to give up) These air ride systems can be very difficult to accurately diagnose the first time and consequently very expensive. Most people seem to be converting to a passive suspension system these days as the ride quality is too similiar to notice a difference and the reliability is paramount. http://www.strutmasters.com offers a high quality conversion kit that utilizes powder coated American steel coil springs that are actually designed to last the lifetime of the vehicle. http://www.strutmasters.com/lincoln-suspension-parts-s/1.htm there is a direct link to the Lincoln page. I hope this helps save some of you a little bit of grief and a lot of money in the long run!!