NEED HELP 1998 NAVI - Air ride compressor runs constantly

[bhickmott]

1998 Navigator 4X4 82,000 miles

Anyone have any thoughts on what might cause the air ride comressor to run constantly even with ignition key off and locked ?

 

[bhickmott]

Navi Compressor now won't run at all

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 ?

 

[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.

 

[Joeychgo]

Could also be a leak in one of the bags.

 

[bhickmott]

NAVI Air Ride Compressor problem solved

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.

The troubleshooting guide at American Air Auspension http://www.americanairsuspension.com/index.htm was a great help.

 

[Frat-man-du]

Good deal and nice work!