Thanks for your suggestion, I could not get the popping to happen with someone turning the steering wheel. Seems to happen most when backing out or pulling into driveway. All joints looked good. The AC problem, I checked all vac lines and found no problems, my wife found the repair order dated 11-96 where dodge fixed the same problem, it reads... INSTAL AUX VAC. CHECK VALVE INSTAL AN INLINE VACUME CHECK VALVE BETWEEN FEED LINE AND VAC TANK. I don't know where any of that stuff is, in dash or under hood? Thanks