Suspension Fault C1130-66 : Air leaks when rocking vehicle back and forth

disco3_2006

New member
Oct 14, 2019
1
0
Los Angeles, CA
2006 Land Rover Discovery 3 SE w 157k miles

I started receiving this Suspension fault a few months ago.

C1130-66 (68) or (2C)
Air Spring Air Supply
Algorithm based failure
signal has too many transitions / events


I believe there is a tear in the Front Passenger side air bag because I can hear a noticeable air leak at low speeds when hitting bumps or making turns. The sound is not constant, only comes in short bursts. I don't notice it at higher speeds or when the car is parked. It seems to leak more when I put it in Off Road mode.

If I put it in Off Road mode with the engine running, I can get out and shake the truck and get it to make the sound. So if it's rocking side to side, it only makes the sound when it's going in one direction.

I'm at the point where I plan to order a new OEM air spring and front strut assembly off of Amazon for $250. Is there any other considerations or troubleshooting I should attempt before making this purchase? Does it sound like it could be any other culprit, height sensors, etc?

Is there a code lookup that is more specific for troubleshooting that exact code I received above?

Thanks for any and all help!

*EXTRA INFO

I sprayed with soapy water around the air suspension components, no bubbles anywhere. I removed the fuse for the suspension and measured wheel well heights, car remained fairly level after 24hrs.

The truck is only driven a couple times a week while in the city and gets taken off roading several times a year.

A year ago I had a tire patched and the mechanic placed the jack under the compressor and damaged the lower cover. After buying a new lower cover and checking the electrical, the compressor has seemed to run a bit longer than it used to but I don't know or think this is necessarily related.

I’m using the GAP IID tool to pull codes.
 

discostew

Well-known member
Sep 14, 2010
4,739
36
Northern Illinois
I think that the leak is probably before the corner valve located in front of the right front wheel. It mounts to the bumper reinforcement back behind the wheelhouse liner. I think that because you say it held air and the corners stayed up after 24 hrs.

The line comes across the car to that right front corner kind of between the radiator and condenser. Down by the bottom.

I would get the truck someplace quiet and let the system build pressure and shut it off. It will only send air out to the corners to raise the vehicle while the engine is running. Be in front of the vehicle to hear the hissing and have someone else turn the engine off. Hopefully you will hear enough of it to figure out where its leaking.
 

discostew

Well-known member
Sep 14, 2010
4,739
36
Northern Illinois
Forgot to mention that any time I've seen one of those air springs leak you could make the suspension make a loud squeek noise by jouncing the suspension. Like stupid people check shocks.
 

jwest

Well-known member
May 28, 2006
892
4
WA & NC
I think that the leak is probably before the corner valve located in front of the right front wheel. It mounts to the bumper reinforcement back behind the wheelhouse liner. I think that because you say it held air and the corners stayed up after 24 hrs.

The line comes across the car to that right front corner kind of between the radiator and condenser. Down by the bottom.

I would get the truck someplace quiet and let the system build pressure and shut it off. It will only send air out to the corners to raise the vehicle while the engine is running. Be in front of the vehicle to hear the hissing and have someone else turn the engine off. Hopefully you will hear enough of it to figure out where its leaking.
I have a strut that developed a damn crack in the rubber section of it's "top hat" ? about 1/2" from edge of where the damper rod comes up through the top. The top hat (unless there's another correct term) is mostly metal but where it interfaces with the innerds I suppose it has to be able to flex, thus the rubber section.
Anyway, this crack would only leak if at least in normal ride height and a lot louder when in lifted height.

For the above air leak tracking, it seems putting the height to lifted should help with both pressure and length of time to track its source before having to start over.

Also, I found that Arnott struts are now about $273 via an Amazon link and others. With their warranty I may give that a shot seeing as the stupid Bilstien 4600 series I have is the one that developed the crack right around the time of the bullshit 2 yr warranty - also when I contacted them it was full-on stonewall/blame installer tone and approach by their warranty contact people. I reminded them that there is basially only one way to install these struts and nothing else you could do would cause it to just come apart. So, fuck them.
 

discostew

Well-known member
Sep 14, 2010
4,739
36
Northern Illinois
Go look on British Atlantic. A couple months ago I got a really good price on a set of struts like yours. Land Rover Genuine but an old part # that supersedes to what Rover is selling now. Can't remember the price cause it wasn't my $$. But I know it was like half the price. Arnot struts are shit
 

jwest

Well-known member
May 28, 2006
892
4
WA & NC
Go look on British Atlantic. A couple months ago I got a really good price on a set of struts like yours. Land Rover Genuine but an old part # that supersedes to what Rover is selling now. Can't remember the price cause it wasn't my $$. But I know it was like half the price. Arnot struts are shit
Damn, are they really crap? I have not really heard or read much about them either way. We'll see if my captured rubber washer "gasket" works this time.