I replaced the two air bags on my 92 crown vic and the air compressor won't come on and yes, the cut off switch is on. How do I troubleshoot the system to determine the problem? I think the compressor is bad but I don't have the correct proceedure to test it.
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Re: air suspension problem 92 crown vic
You can unplug it at the compressor end and supply your own power with a couple of bits of wire straight from your battery and does not interfere with the vehicles systems.Make sure you put positive to positive etcThat will tell you it operates.You will then have to remove outlet hose to check that it is creating any pressure.The pump should have a reciever drier that keeps moisture out of the air lines Considering the age of the vehicle that part is due for replacement.Do you have a test light/probe to check if you have power to the pump?You can do this test at the compressor plug.
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Not really. The air bags act as replacement or extra coil springs to hold the car up. You might be able to replace them with coil springs from a Crown Vic. That may cause problems with the front air bags and the rest of the system.
Air ride suspension basically works like this. you have a small air compressor and a sensor that connects between the rear axle and the under body Frame. When this sensor detects a load movement like more or less weight it turns on the air compressor to air up or opens a exhaust valve to let air out. most common problems with this system. broken or disconnected sensor. leak in the air lines between compressor and shocks. or a bad or weak compressor.
make sure its turned on, the switch is in the trunk. The compressor is in RF area ahead of RF tire, the fuse which may be blown is in the fuse box at RF wheel under the hood. if the fuse is blown, its because the compressor has run too long trying to pump up the air bags which are leaking. it may need the bags and compressor, there are several companies that make springs for the rear to replace the bags.
Sounds like the problem is in the air bag suspension, not the compressor. The air bags shouldn't be losing air when the car sits. The compressor adjusts the suspension level according to the load. The air bags have a valve similar to a blow up raft that allows air to pass through both ways. If when the car is running the compressor is constantly running and not turning off, the issue is within the air bags and/or the air line.
You probably have a leak in the system. Did "they" check the lines and air suspension? "They" probably disconnected the compressor to keep it from burning out from overuse. You need to fix the leak before reconnecting or the compressor will wear out very quickly.
It just happened to me. I took it to a spring shop and had the air bags replaced with coil springs. It is an identical fit from a Crown Vic and only cost $200.00 total! Too much can go wrong with other parts of the air suspension. The ride is the same.
my brother in law replaced the air springs on my '94 town car with rear coil springs from a '92 crown vic. He raised the rear tires off the ground and put jack stands on the frame for safety on both sides. Then disconnected the shocks at the lower end and removed the air springs.removed rear tires and used a piece of 2x4 to pry axle down to provide clearance to put coil springs in place. then hooked shocks back up and it worked fine. the only way the coil springs could come out is if the car was upside down and then who cares. This project only cost $ 25.00 Real cheap being we were broke!