Since the door locks and the transmission, etc. are separate systems on the SD, I found it is much easier to just change all the flex fittings, at once, and go from there. It is not worth it to spend too much time trying to eliminate $2-3 pieces. Once those are changed out, if I still have problems, then I try to find the leaks.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )