1991 Toyota Pickup rain or dead car?

Two days ago I drove my 91 toyota 4x4 pickup 22re for 45 minutes in the rain, stopped at the job for 1 hour. When I tried to dirve away, the truck started, I made it out of the driveway and couldn't go forward. Back to neutral, idle went from poor to regular. Sat there for twenty minutes attempting to get it running long enough to pull back in the driveway. Tried wd40 and pb blaster on the wires, no help. Could not find wire dryer. Let the truck sit overnight, started it in, the morning, ran fine for longer than a minute, now much dryer, no rain, and ran fine for over that minute, then the idle dropped low til it stalled on its own.
Several things have been done to my truck very recently. New head last fall, timing chain too, just changed the muffeler 2 weeks ago, but could not install my rear o2 sensor because my truck is of course Cali. Emissions, and I am in Ny. No, pipe has the hole made for my truck, the sensor does not fit the piece I can buy and weld to the pipe so that is out. I have not had the time to fabricate the piece with bolts to weld to my pipe, to make a long story short I have had my o2sensor out for this entire period of time, strapped to my frame to stop it from dangling. Just saw in chiltons not to get them wet? Was this a big nono?
I have had a big loss of oil, never before. Almost a quart every tank and a half, and can see no leaks. I just changed my oil and added a bottle of lucas with the oil.
Last of all, when I have been driving to the job in the mornings, the truck sputters like the filter is plugged, but I just changed that with the head. I bogs as I turn the corner, I get down the. Road a half mile and it is fine, but it bogs a little at the start. Yesterday when I tried to start it, it started, but when I gave it gas it bogged down. This seemed to be happening mostly when starting and going for a mile.
This morning I changed my spark plug wires, cap and rotor, checked cyl.2, clean, and started it. It died in under 10 seconds, and won't start now. Ideas?
Any ideas?