(This is the forums archive - If you want to get back to the main site simply
click the banner above and you will be taken to our homepage.)
Lincoln vs Cadillac Forums is the Ultimate Online Resource for Owners and Enthusiasts of American Luxury Cars. Feel free to browse through our archive - but make sure you make it
back to our main site - Lincoln vs Cadillac Forums
Anyone have any thoughts on what might cause the air ride comressor to run constantly even with ignition key off and locked ?
Posted by: bhickmott
I parked it a couple days ago and all was fine. Came out this morning and the battery was dead. Jumped it to start. That's when I found the compressor ran constantly. Let it run while I put up this posting this morning. When I went back out, the compressor is now off and won't come on at all and I now have a "check suspension" light. Checked all the fuses and the Air ride on/off switch makes no difference. Do you think maybe the relay is bad ?
Posted by: LincolnTech38
sounds like the relay may have got stuck on and burned out the compressor. Try replacing the relay and check the wiring for corrosion. Relay is located behdind and above the right front fog light mounted on the frame by the horns. Its got a heat sink on it and a four wire connector about 2 inches long with two fat wires running to it and two small wires.
Posted by: Joeychgo
Could also be a leak in one of the bags.
Posted by: bhickmott
Turned out be the relay. All 4 pins were shorted together, so not only did it feed 12V to the compressor constantly, it also fed 12V back to the control circuit. The reason the compressor eventually shut off was due to corrosion on the 12V feed pin in the relay connector.
Cleaned the connector and greased it up with white lithium spray. Installed the new relay ($85 even with a 20% discount) and all is fine.
