Sounds like it's a wiring issue to me; maybe a fuse.
The eec sends regulated 5V power to all these sensors that ain't working, just so they don't vary with the battery voltage, pretty much.
So that's why they don't work, I'd bet, no eec power, no sensors.
The TPS should be +5V, some voltage, and ground, if you don't have that, that's the deal. It's there Key On, if it's working right.
I'm pretty sure all the sensors are that way, that aren't controlled by the eec. (like the O2's would be)
I'd check connector ends First, to see if there's a pin that doesn't have a mate; that's easy to do, move one to the wrong spot.
You'll find it as the last thing you look at, unfortunately; when you find it, it'll fix it all, probably.
Something like this helps as a troubleshooting aid:
They're little voltmeters, ~$12 on amazon for 5 of them.
They measure whatever is on those two wires, and don't work under about 2.5V, so you can see easily when somethings dead.
I wrap them in tape, put a magnet on and more tape, and add ~4' of wire and some clips.
You can make a crib sheet that says RED=main, Blue=pump... and be able to just look around and see what it doing, while you're tracing.
Wire piercing probes for a voltmeter work, BUT: after you are thru, you have to rub RTV into any insulation holes you made.
That keeps it from rusting in there.
And don't pierce it near the connectors, stay 4" back if possible.
If you think the timing is wrong, use an old school timing light, and check it vs the TDC mark. (You will want to verify TDC IF you think it's possibly off.)
That's about All a timing light is good for now, lol.
BTW: If you think it's 180 out, please don't tow it to speed, drop the clutch, and try to set the distributor while it's turning over. While tied in to the front of the vehicle, so you can't fall off. That never works. (that happened... I put him out with a powder fire extinguisher. That was a 5.0 cougar, 76 or so. )