Rear Strut Won't "Inflate"...

[jaypete1]

... My left rear, for some time now, will sink down if left sitting for a couple of days, usually when its cold. I would hit the unlock button and it would inflate. No more. I hear the pump going, but after only an inch I only hear air escaping and the "auto level system inact" light comes on.

Question: do I go ahead and fix both sides, or do the left and wait until the right goes.

2000 4.4 153,000

[wallyx5]

Just the one that losing air. I have not replaced mine and it's getting close to 300,000. You want to pull the spare tire out and check all the air fittings to make sure they are tight. You can all so spray soapy water on the air bag that is leaking and see if its the bag that is leaking or not. If it has a leak you will get soap bubbles where the leak is.

The one time I was have issues with my air spring, it turned out to be the sensor. There on each side. You could switch them and see if the problem persist.