Hesitation and Stalling on 89 200TQA

[Bill Rowe]

Starts but stalls immediately.  Will not stall on 3rd attempt.  This has
always been an issue since I bought the car last summer but was sporadic.
Now it's every morning.  Once it gets going it will on occasion hesitate
upon acceleration.  As time goes on it happens more frequently even after
fully warmed.  Tried the following w/ no progress:

1.  inspected and cleaned distrib cap and rotor
2.  replaced 02 sensor.  replaced temp sensor
4.  replaced WOT switch
5.  Plugs and wires have less than 10k miles on em
6.  fuel filter has less than 10k miles on it
7.  PO replaced fuel pump, injectors, accumulator less than 20k miles ago
and had car set to specs
8. replaced fuel pump relay
9. checked power to WOT switch connector

What have I overlooked?  Is the stalling at startup related to the
hesitation?  Is my WOT switch set incorrectly?  Warm up regulator?

TIA




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