After about 7 weeks I've finally got the Genesis back from it's 2nd home, the dealership shop.
In mid-September I took it out of town and while under heavy acceleration it would fall flat on its face with no power. Could accelerate gently though. Also had an intermittent low oil pressure light come on. Oil level was fine.
Took it to a nearby dealership where it was for a couple weeks and come to find out, the aftermarket extended warranty I bought with the car requires it to go to the selling dealership. Had to pay $175 for diagnosis there.
Took it to the selling dealership and they determined it needed a new in-tank fuel pump and an oil pressure switch. Also needed a new windshield washer pump. While the intake manifold was off I had them replace the spark plugs which I provided, I had bought them last summer and then realized it was more work than I wanted to do to it.
Apparently to pull the intake manifold off and replace the oil pressure switch they had to remove the fuel rail, only to find a fuel injector seized in the rail. It was a whole fiasco for them to source a fuel injector on back order. I had to actually hunt it down. Once they finally got all that put back together, it started misfiring on a different cylinder, for another bad injector that they had to hunt down.
Finally got it back today. The warranty paid out $1,934.19 and I paid $225 for the spark plug labor. The warranty company has a special deal with the dealership on labor and parts cost. The estimate from the other dealership was going to cost a lot more.
Overall, glad to have it back so the '96 Cherokee can go back into hibernation.