I need 92 crown victoria air ride suspension repair instructions.

LEAK IN SYSTEM CHEAK ALL CONNECTIONS AND JOINTS FROM THE MAINE PUMP.

Sounds a lot like an Air/Vacuum leak to the rear Shockies..... See a Suspension Specialist....

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.

Attempt to change all of the spark plug wiring and spark plugs. Then start the vehicle.

have someone or someone's stand on the back of the bumper then turn it back on and see if it will raise it up.

I think that if you lift by the pumpkin and put your jack stands under the axle tubes you should be fine.It's when you lift and suspend by the body you can over extend those air shocks.

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.

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.