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Hello everyone I am new to the site but have read it quite a few times and has helped so just wanted to say ty first
now I have a 05 expedition and just changed my front air shocks with arrnott struts and after about 7 months I seen they were low again in the front so I thought they had a leak and arrnott sent me new ones very fast great service from them
now put new struts on and my truck still drops overnight when cold so now I know it can’t be the struts and trying to look around but not sure what else could be leaking the motor fills them up right as I start the car and takes all night to leakout again but just when cold out hope someone might have a idea what it can be is there something between the strut and motor besides line I was trying to spay soapy water in spray bottle but no luck and hard to follow lines also my rear never leaks out
Last edited by shadowtarget; 02-15-2019 at 08:34 AM.
Reason: Forgot to add
Each front air spring has it's own solenoid controlled by a central controller. Did you get new solenoids with the new air springs? Reuse the old ones?
Yes there new struts came with the solenoid that was where the air line attaches on side of strut it also seems like passenger side goes down more than the drivers side
Last edited by shadowtarget; 02-15-2019 at 11:23 AM.
Reason: Adding more
Since both sides are dropping under cold conditions it's still pointing to each air spring is leaking. Either the bladder, o-ring or solenoid/o-ring is leaking on both sides.Even with the airline disconnected the air spring should hold pressure for quite some time.
I wonder if Arnott has a bad batch of struts. Or the vent solenoids are getting contaminated from moisture, which would indicate the drier on the output of the compressor may be bad. That's a tough call.
Perhaps someone else has another theory. Your issue is a head scratcher.
Another thought....Can you determine how long it takes for the front air springs to drop pressure/droop? The controller stays active for ~40 minutes after the vehicle is shut off. If a height sensor is changing state due to the cold weather the controller could release pressure thinking the height has changed and needs adjusted. If the height is good for more than 40 minutes after shutdown that eliminates something electrical. You could also shut off the system as a another test.
I just took out the windshield washer tank and was squirting windex on all the components and where the line goes in the dryer it was bubbling so guess I need hole new motor and dryer ugg that is a bummer cause it works to fill up everytime
IIRC the drier is a separate assembly. The one in my old Navigator was an Arnott replacement. The drier was removable from the compressor. That's where the o-ring was leaking.
The line going into the drier has a brass ring around it. You could try putting a new ring on an unused portion of the air line, cut it back a few mm, to see if that works for you. Once again I do not think that is the cause of your issue, but it will lead to longer fill times.
Well it still leaked air after I changed the the motor and air dryer squirted soapy water on it and did not leak anymore so I called arnott and they're sending me out 2 new air struts under there warranty so now this is the 3rd pair I'll be putting on is there anywhere else it could be leaking air I am try to follow the lines but no luck in seeing a leak
As I stated before those air springs should hold pressure even with the air line disconnected to the best of my knowledge and experience. The controller has to open the solenoid on the desired air spring and the vent solenoid in order to allow the pressure to relieve.
If your are still losing pressure over time it has to be something with the air spring assembly(ies). At least Arnott is working with you on the problem.
If the new set of air springs are still exhibiting the same problem I suggest to let the system settle out after a drive/park cycle. Remove the electrical connector to each front air spring. Let it sit for a few hours. See if it still drops height over time like before. If not, something with the controller is activating a solenoid or both for some reason. If it still drops then Arnott has an issue with this batch of air springs IMHO.
If you have a code reader that can access the modules on the CAN bus you can at least check to see if there are any error codes related to the dynamic suspensions as another path to diagnose the root cause.
Ty so much for the help and assistance you are giving me I really appreciate it.
my new air struts are in the mail I will let you know what happens after I follow what you said.
again ty so much for your time and input.
So I received my new struts installed them today and after I finished the compressor would not turn back on
and my gauges said check suspension so I checked the two plugs on the struts they were connected then made sure i
turned the suspension switch on which I did then checked fuses they seemed good the 50 amp was hard to tell but looked good
might go buy one to just to change it so it must be the new pump I just installed took a crap when it worked earlier today doesn’t
make sense but napa said they will replace it so might as well it won’t be here for few days if you have any ideas I am up for anything
right now. so weird that worked right before I changed the struts and didn’t after I changed them
Do you have a DVM? If you do verify power is getting to the compressor on pins 3 & 4 on the connector at the compressor. If you have the old compressor assembly you could also plug it into the same connector to see if it fires up. No need to reinstall, just plug it in electrically.
So I found the problem I had the new struts in kept throwing check suspension light so after I changed all fuses and relay and pump had same issue I jumped the relay and pump came on so then I took old struts that never had a issue but leaking air overnight and took tires off and set the struts next to new ones plugged them in bam no check suspension light so took out the air solenoids and put them in the new struts and everything worked but leaked air again overnight so called arnott they are sending me 2 new air solenoids on Tuesday so when I change them I will let ya all know if that fixes it.
and I did spray down them to find leak it never bubbled that you could see but has to be them
Ty all for all your input very appreciated
02-15-2019, 08:26 AM
