Hello everyone,

about a month ago my car just leveled Down on all four struts

i used icarsoft to identify the error code (which I don’t recall now) it said something was wrong with the valve block (air suspension solenoids)

i thought ok thats no big deal, so i got a new valve block from Amazon + new air compressor , installed it and the car went back to normal height except the front right strut.... it keeps filling air untill it gets all the way up ?!

there are no current air suspension fault codes and i tried the following:

disconnecting the battery for 12 hours

releasing air pressure from the front right strut

releasing pressure from the air reservoir

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any idea why the front right strut keeps filling ?

 

Basil94;

You do not provide any info on your vehicle..... model year, base model, The last 6 digits of the VIN would also be helpful.
Please report any current codes for forum members to pitch in.

Do you have one or two front height sensors? It sounds as if the ASM thinks the front right is low so it keeps sending air to it.
Look at your live data for the height position sensors. What is the front right showing?
Did you do any work on the front right suspension that may have disturbed the height sensor?

I believe there is only one pressure sensor on the system located in the valve block. If the other three corners are the right height I wouldn't suspect the pressure sensor. If the front right height sensor is reading OK (or, if you only have one height sensor on the front of your car) the problem is likely elsewhere, Perhaps the valve block solenoid to the front right is leaking air (I would think you could eliminate this possibility by swapping the valve block connection for Fr right and Fr left) but only do this after eliminating the possibilities suggested above.

Best Regards, William .

 

System has a leak somewhere, does the car drop on that side overnight, how old are your shocks?

 

My rear air suspension on my xj is not level off after changing the suspension, level sensors looks good, air compressor works. One side of the rear raises really high and the other side stay down.

 

Jamal;

Please study the Air Suspension & ECATS overview in the STICKIES section located at the top of this forum.
Basic info: What year and mileage on your XJ?

More detailed info is required to troubleshoot your problem.....
What suspension work was performed and did you personally perform it?
Did the problem exist before this work was performed?
With what data are you concluding the level sensors "look good"?
What DTCs, if any, is the ASM reporting.

Best Regards, William

 

if the ride height sensor are just a little arm on a box, connected to the suspension arm, simple but effective.
if you have individual sensors to each strut they are just little boxes, with a little arm attached between the box and the suspension, as the suspension moves, the arm moves, and the computer reads where the arm is and decides if that strut need air added or removed, in effect it's just a little switch, like a volume switch on your radio, as the arm moves the computer adjusts the amount of air supplied to the strut, these little arms can easily become detached, or the box can become faulty, as it's located vey near the wheel, I have even seen an arm being popped over its pivot point and read the opposite to it's intended direction. SOmetimes when suspension work is carried out they can be forgotten and left off, of the strain on them as the suspension is worked on can cause them to fail.

 

Covert them to Gas shocks

Arnott or Suncore