Well, fixing, and then replacing the air intake hose stopped the decel stalling. But as I said, still had off idle hesitation, was gonna take the advice and clean the AIC next. But, the old brick just shut off and would not re-start on my wife the other day. So, when I got to the car, I looked at all the usual stuff, fuel pumps were running, I was gettin spark.. hmmm... so, I ran the Diagnostic Test Mode 3, really cool test by the way, everything sounded fine, except, no injector pulses...
So, since the cooling fan relay and radio suppression relay are identical, I swapped them. She fired right up! Drove it home, less than a mile so no need to worry about the auxiliary cooling fan.
Popped open the "bad" relay, looked at it under a magnifying glass, most of the solder joints were cracked! Fired up the old Weller heated up each joint to let the solder re-flow. Put the relay back in and the old brick fired right up, instantly! Not only that, NO MORE HESITATION!
So, moral of the story is... for an old brick that's slow to start, and has off idle hesitation, we need to put the radio suppression relay on the list. Best thing, no need to buy a new one, just re-solder the cracked joints.