Air ride

[akart1]

97 Mark Viii. After getting a flat tire. The tire shop jacked up the car with the air switch on.
After that the front was low and the back was high.
I read an article that if you jumper the air ride relay and pump turns on. It's the relay.
The next morning the car was sitting low on all 4 corners.
Replaced air ride relay (next to pump). Still nothing
No check air ride message. All fuses ok

Any help would be appreciated

 

[driller]

No error messages? Odd.

Usually the error message and the timing of it will let you know if there has been a 'hard fault' detected or if the compressor just timed out.

My first check would be to check the ride height sensors are still connected.

My next approach would be to jack the car to just below the normal ride height and start the car and see if the compressor kicks on.

My final check would be to jump power directly to the compressor to check if it operates.

 

[billcu]

The link below shows how you can easily test the compressor. You can also open selected air spring solenoids to inflate the air springs. I'll move this thread to the suspension section where air spring problems are discussed.

Air Ride hard fault troubleshooting and forcing system to inflate

My CE has a hard fault, the check air ride message comes on right after start up. Here's how I troubleshoot and manually inflated the airsprings. This might help people that don't have the wiring diagram. The air ride module is located under the passenger side lower cowl kick panel. The gray...

www.lincolnsofdistinction.org

 

[akart1]

No error messages? Odd.

Usually the error message and the timing of it will let you know if there has been a 'hard fault' detected or if the compressor just timed out.

My first check would be to check the ride height sensors are still connected.

My next approach would be to jack the car to just below the normal ride height and start the car and see if the compressor kicks on.

My final check would be to jump power directly to the compressor to check if it operates.

Thanks for the reply. I checked all the ride height sensors and they're OK. I unplugged the pump relay and jumped the relay and the pump turned on. So I ordered another relay. Still nothing. I jumped the relay again and pump turns on, but car doesn't lift? So believe it's the pump/dryer?

 

[driller]

Thanks for the reply. I checked all the ride height sensors and they're OK. I unplugged the pump relay and jumped the relay and the pump turned on. So I ordered another relay. Still nothing. I jumped the relay again and pump turns on, but car doesn't lift? So believe it's the pump/dryer?

Jumping power at the relay only verifies the pump will run. The solenoids will not be open, hence the car doesn't lift.

Did you try billcu's troubleshooting method using jumper wires at the air suspension module(link below)?

Air Ride Hard Fault Troubleshooting and Forcing System To Inflate