I got a chance to to do a little more trouble shooting.Unhooked the battery briefly to try and reset the computer, the car is sitting so low turning the wheels and getting it out of the driveway is not an option so we started her up and had no height change. Next we pulled the car in and out of the garage a couple of times and left it running for few minutes , same result. I unhooked the battery and left it since another friend was coming over later. He hooked it back up, same result, nada.
Is there anyway to override the level control to see if it is the compressor? Seems odd to me that none of the corners would come up so it would appear to be a control or compressor issue. Next thing I will check is if the compressor fuse is blown. if the fuse is good, any suggestions on how to isolate the issue.

Pat Lemmel
58 XK150DHC