I have a 97 Mark VIII that was put back to bags and has worked fine for almost 2 years. I converted it to 4.5 lugs and tried to lower the car by the ride height sensors. Switch in trunk flipped off, car lifted and sensors raised. But now the car won't go up, the pump comes on and runs for its auto time. During my attempts to sort this out, the Check Air Ride System would read out and sometimes it would not. I have raised and lowered the sensors in hopes to get something but no hope.