Once you get it running you should be able to keep it running by reading the O2 sensor voltage and make the appropriate adjustments-.1 to 1.0 volts DC. Did you try this? If you can't do this to get it to idle then, either the FD is bad or you have a unmetered air leak or both.

Also, did you ever test your potentiometer ?

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1993 2.6 Sportline 5 speed
1992 2.3 Canadian delivery