Ok, when you replace the front spring, all the air was out of the rear bags. With the weight of the car on the bags, it may have cut the bags and they unable to air up. They may have to be replaced.
2 other quick things, check the switch in the trunk for being in the on position.
Before starting the car, open and close the door and then start it up. Let it run for a bit and see if it tries to air up.
Roy
Sunday, October 16th, 2011 AT 3:22 PM