Do you have a tachometer?
Is it stable?

 

I will double-check today on the circuitry, it was dark last night so I may have checked the wrong pins. I plan on going through the entire wiring of the ignition system to EEC today if the weather holds up using the diagram attached below


As far as a tach, I have the factory one in the dash and it is working and stable

 

You should have continuity on all those wires.
Double check that you are looking at the correct pinout.

 

Well I decided to go ahead and redo the resistors. Got those wired in, got the correct resistance (21.7k) to pin 4, and continuity across the PIP and SPOUT circuit; both of which resistance readings were about 0.3 ohms.

Could something possibly wrong with the Hall Effect switch in the distributor?

 

Talking about the PIP? I posted this before for you in that deluge of info.

https://www.ford-trucks.com/forums/1...placement.html

The PIP and the shutter wheel it senses are both of interest. The shutter wheel triggers the PIP.

Replacement distributors usually don't come with new PIPs. A replacement distributor usually needs a new PIP before it is installed.

 

I apologize I must have missed that. I was under the impression that if there was an issue in the PIP signal the truck wouldn't run at all, spout connector or not. That makes a lot of sense though, if it was sending a rogue signal to the EEC, then it ends up sending a wild signal back which could be causing this stumbling...

 

This seems like an entire setup, PIP and all. Is this correct?

https://m.autozone.com/external-engine/distributor/duralast-gold-new-distributor/193838_0_4618?location=

 

They come with a PIP, not a new PIP. I think this is in one of those threads I posted a link for. I had one post with about three ignition links.

If I remember correctly the PIP usually starts breaking down with heat. Truck runs better cold and has problems hot.

https://www.ford-trucks.com/forums/1...e-failure.html

This looks like the link.

If your distributor is not loose and is not too grody to clean (shutter wheel, especially) I like the approach of cleaning and installing a new PIP. I am a cheap old bas-tard. Next best is to buy a new distributor and install a quality new PIP in the new distributor.

Did you re-do your tests with your new ignition module? Trust but verify.

 

Update: Well I decided to go ahead and buy that distributor today as a last chance effort. Pulled the old distributor, swapped the TFI to the new one, and stabbed it in. Cranked it up without the spout plugged in and checked timing, seemed to be running good. Timing was at about 20 degrees so I backed it down to 10 degrees, plugged in the spout and proceeded to drive it. Drove it easy while warming up, didn't notice any stumbling. Motor got up to temp and I got in to the throttle. No stumbling!! None at all!! Came back to the house, let it sit until the motor was cold and then went and drove it again. NO STUMBLING WHATSOEVER!!!! I guess that was the issue I've been searching for!!

I just want to thank everyone for their help, it's been a long time coming and I couldn't have done it without y'all!! I've learned a lot from everyone in this thread and I appreciate everything!

 

Congratulations again.

Links back to the other thread:

https://www.ford-trucks.com/forums/1...ning-lean.html

 

Well done !!

Check your old Dizzy shaft for play, this is fairly common, that causes stumbling under load. The play screws with the rotor button alignment with the Dizzy cap electrodes.