[Shark_GTS]

Holy cow!! Start with the simple stuff first.

Best to pull the codes if you can get a shop with a scanner. Look at the o2 sensor. When the car hits 2/3 of it's op temp, it switches to o2 sensor control. If the sensor sig is out of range or nop then you won't idle well at all and get stalling.

Next stop is the MAF. In limp mode the car is not very driveable.

I've never started a TBF car but my guess is that when the oil barrier thins, the friction of the failed bearing is like putting on a band-brake of an auto trans on the crank, therefore stalls the engine.