COULD THE REASON THE FRONT OR REAR OF MY FORD/LINCOLN GOING DOWN BE JUST THE SOLENOIDS?

Its been my experience as a former Ford/Lincoln factory trained and certified technician, that if the solenoid has never been removed before, most likely the leak isn't from the o-rings that seal the solenoid to the air spring. Now if the solenoid had EVER been removed before, the o-rings should have been replaced at that time. If you have an old o-ring that has never seen the light of day and all of the sudden, after 10 years of being cooped up, it is released from tension, it will expand. If reused, it WILL eventually cause a leak . It might take a day, a month, or even a year, but it WILL leak at some time down the road. Click HERE to learn how to reseal your solenoids.

In other words, if you replace your air springs, make sure you "at least" replace the 2 x o-rings that seal the solenoid to the air spring/strut. If you don't, its not a matter of "IF" it will leak, but more like "WHEN".

It would be in your best interest to also replace the little o-ring that seals the air line to the solenoid at the same time. Because this o-ring is AFTER the actual sealing part of the solenoid, if this little o-ring leaks, it will only affect the operation of the system while the solenoid is opened, like when the module is making a height adjustment. Not while sitting overnight!

It will also leak "line pressure" as well. In other words, when theres little or no line pressure, the vehicle may go down for just a second when the the compressor comes on and the solenoids open up. This is because the compressor has to make up the pressure that was lost, before it can build up enough to raise the car. If the leak at the line gets bad enough, it can cause trouble when the system is trying to fill the springs/struts.