Here is my recap:

I replaced my auto trans with a junk yard transmission and made an error at install which damaged the flywheel. Put in a JY flywheel and reinstalled the transmission today.

When I tried to start the car, it did not want to start. It turned over, but sputtered like it wasn't getting any/enough fuel. Eventually, it did start, but it barely runs. When I press the gas pedal, it stumbles or won't do any better. Checked the O2 sensor (its good), tested the AMM per Haynes and it seems good. I'm trying to run through the various actions of the swap to see if there may be something we may have bumped. The car started and ran normal just prior to the swap.

Incidentally, I did check for loose or disconnected vacuum hoses. I also pulled the spark plug wire one at a time while the engine ran and it made a noticable difference for the worst. I now have an exhaust leak where the pipe connects to the exhaust manifold. Surely that wouldn't be the cause...I appreciate everyone's input.

Trey
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1993 Volvo 240 219,000 miles