Air ride compressor not coming on

Cgarrison

New member
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I'm not sure why my air compressor for the air ride isn't working. The other day I came out to the car sitting low in the back right so I checked the shocks and they were very worn so I ordered new ones and put them in. After that I lowered the car so it sat down a little bit but didnt want to lower it to far and I turned the air ride back on and the compressor didnt come on when I turned the key. So I thought it was the compressor because it's been trying to keep up with the leak so I just replaced the compressor and it's still not working. So I'm guessing it has to be something electrical but I'm not sure what else to look at I have been looking threw threads but haven't had any luck. Any help would be greatly appreciated, thanks.
 

flaokie

Junior Member
37
3
8
I assume you have a ‘97 to ’02 Continental.
And I also assume the wiring would be the same for all these years with rear air suspension only.)
(The wiring schematic I have is for an ‘02 Continental.)

Check that the connector to the new compressor is firmly attached.

Check the fuse and relay that power the compressor.

Under the hood, 60 amp fuse F1.11 is the power source the relay passes on to the compressor motor.
The compressor relay is a solid state relay that may have reached the end of it’s life.
Try to jumper 12 VDC+ directly to the pin on the compressor that has the 10 Ga violet wire with an orange stripe. Don’t use a real thin wire for the jumper, and just touch it to the pin for a second or two to see if the compressor turns.
If it does and the fuse is good then the relay may be bad.

Since the vehicle dynamic module in the trunk is what turns the relay on and off, if the module is going bad then it may not be turning the relay on and off.
Good luck.
 

Cgarrison

New member
3
0
1
I assume you have a ‘97 to ’02 Continental.
And I also assume the wiring would be the same for all these years with rear air suspension only.)
(The wiring schematic I have is for an ‘02 Continental.)

Check that the connector to the new compressor is firmly attached.

Check the fuse and relay that power the compressor.

Under the hood, 60 amp fuse F1.11 is the power source the relay passes on to the compressor motor.
The compressor relay is a solid state relay that may have reached the end of it’s life.
Try to jumper 12 VDC+ directly to the pin on the compressor that has the 10 Ga violet wire with an orange stripe. Don’t use a real thin wire for the jumper, and just touch it to the pin for a second or two to see if the compressor turns.
If it does and the fuse is good then the relay may be bad.

Since the vehicle dynamic module in the trunk is what turns the relay on and off, if the module is going bad then it may not be turning the relay on and off.
Good luck.

Thanks for the help I was able to get it down to the relay with that info and now the compressor comes on. I dont hear any leaks any where but the air is not getting to the back and filling the shocks. I'm not sure what to check after that it's not filling either side but it is turning on. Any help would be very appreciated thanks.
 

flaokie

Junior Member
37
3
8
If the compressor is turning on and the air springs are not inflating, the air from the compressor is either leaking or is blocked, or the solenoid valve(s) are not opening, or the air springs are leaking.

First, since the compressor and springs were replaced, check each air tubing connection.
Starting with the compressor.
Make sure they are open, not leaking, not plugged, and not kinked.

The ride height sensors are sending a signal to the computer that one or both sides are low and to turn on the compressor, and open one or both solenoid valves, to admit air into the air spring(s).

You can connect an external air source to the tube at the drier to see if the springs inflate, or maybe detect an air leak in the tubing going back to the solenoid valves.

The solenoid valves have to open (be energized) to admit air into the springs.

You may have to try to jumper the solenoid valves to see if they open and close.
______________________________
 

Cgarrison

New member
3
0
1
If the compressor is turning on and the air springs are not inflating, the air from the compressor is either leaking or is blocked, or the solenoid valve(s) are not opening, or the air springs are leaking.

First, since the compressor and springs were replaced, check each air tubing connection.
Starting with the compressor.
Make sure they are open, not leaking, not plugged, and not kinked.

The ride height sensors are sending a signal to the computer that one or both sides are low and to turn on the compressor, and open one or both solenoid valves, to admit air into the air spring(s).

You can connect an external air source to the tube at the drier to see if the springs inflate, or maybe detect an air leak in the tubing going back to the solenoid valves.

The solenoid valves have to open (be energized) to admit air into the springs.

You may have to try to jumper the solenoid valves to see if they open and close.

I haven't been able to work on it recently because of the holidays and other stuff going on but I was working on it this morning. I took the hose off of the solenoids and I had air coming out but it seemed like the pressure is really low it was like someone just had there mouth on it blowing. After that I hooked the hose back to the solenoid to see if it opened and it did but still low pressure. I'm going to take the hose back out and try to blow it with a compressor to see if there is anything stuck in the hose. Thank you very much for the help and if you have any other suggestions of what I should do next that would be awesome.
 

flaokie

Junior Member
37
3
8
Low air flow/pressure.

You said you replaced the compressor.
New?? Or junkyard model??
Did you also replace the drier?
The drier removes water vapor, dirt, dust, oil etc.
Could be plugged up??

Pull the air line at the drier outlet - run the compressor and see if the air flow is still low.
If it is, pull the drier out and see what the outlet of the compressor feels like.
 
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