So, here is how I proceeded:
1) Changed Idle control relay (having already changed the valve). Went OK for a while, then...stall
2) Had an extra used EZL ignition control module laying around. Had changed to a new used one. Hypothesized that it could be the used EZL that was put in to replace the one that burned out. Placed the spare used EZL in. Drove around. Seemed to be doing well over about 250 miles...stall (in a bad place too, as I was making a left turn in a busy intersection)
3) Replaced...yes, I know, you told me so...the fuel pump relay. Drove so far about 150 miles so far. No stall yet.
4) Had ordered a new OVP relay. figured what the hell, put that one in too.

So, if I stall again, then I guess I look at my ignition coil. Put a new one in about 7K ago. Old one had not failed, but figured it was getting up there at 200K. Will keep posted.

__________________
Der Panzermann und Fraulein Fahrvergnuegen

1991 420SEL 201K "The Big Blue One"
1985 300DT 205K chassis/285K engine nee California emissions "Goldbug"
1983 300TDT 255K "The Womble"
1983 300 DT 214K "Sea Sprite"-Rear-ended a truck
1983 300SD 285K "The Donor" Gave his life so that others can live
1980 500SL Euro 105K "Der Panzer"