Okay, I've gone back and carefully reread the thread for any clues.
You said the same behavior is occurring on #1 and #3, but 2 and 4 are good. This means the two terminals on the lower half of the distributor are exhibiting the same symptoms, per the firing order: 1, 3, 4, 2, which places #1 and #3 on the bottom of the rotation cycle.
Did the new distributor have a good gasket around the edge, so that the distributor cap sits flush all the way around? I've seen those clip-on caps get cocked sideways and still run. I know you've done this with two different caps and had the same results. Try scuffing the tip and the top flat contact of the rotor button with a bit of emery cloth or 220-grit sandpaper, to clean up the terminals and make good electrical connections.
Were both distributor caps new? If not, clean the terminals on the inside by scraping them with a razor blade. The oxidation should flake off fairly easily. Also, make certain the spring-loaded graphite button in the top of the cap is still functioning correctly, so it can make good contact with the top of the rotor button.
Make sure you've got good grounds to the engine, the valve cover, and the chassis. This probably gets overlooked more often and causes more problems for folks than we care to admit.
Last edited by kg4miq
on Wed Jan 11, 2017 11:30 am, edited 1 time in total.
How to rebuild a 2.6L 4ZE1 distributor
'89 S Trooper - "Kal-El" - 4ZE1
'88 LS Trooper - "Delta" - 4ZE1
'92 Pickup - "Blacktail" - 4ZE1
'89 S Trooper - "Red Leader" - 4ZE1
'89 SE Trooper - "Vader" - 4ZE1'90 Trooper - "Leia" - 4JG2T swap on hold
'89 Pickup - "Wicket" - 4ZD1
'90 S Trooper - "Nan" - 4ZE1 (possible V8 swap - Ford 302 with 5 speed?)
'94 S Amigo - "Artoo" - 4ZE1, SOLD
'92 XS Rodeo - "Jabba", LH0, 3.1L V6
'89 S Trooper - "Chewie" - 4ZE1, TRADED
'89 XS Trooper - "Red" - 4ZE1, SOLD, bought it back'89 LS Trooper - "Obi-Wan" - LH0, 3.1L V6
'88 S Trooper - "Stormtrooper" - 4ZE1, SOLD
'91 S Trooper - "Ghost" - L32, 3.4L V6, SOLD
'89 S Trooper - "Angry Bird" - 4ZE1, SOLD
'89 S Trooper - "Phantom" - 4ZE1, salvaged
'90 Pickup - "Uno" - 4ZD1, SOLD
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