I recently bought a 92 sc400 and it ran perfect for about 2 weeks before randomly messing up one morning when I tried to start it.
Issues:
Before any major issues, the car randomly stalled at stop lights every once in a while.
Barely wanted to start, cranked and cranked until just barely starting up.
Next, I tried driving down my street and it bogs down when I floor it, but will get up to speed when I slowly accelerate. Drove it around fine, up to 50 mph but like a slug. In first gear it drives pretty nicely, but as soon as I put it in second gear it won’t go above 1k rpm.

So far I’ve tried replacing:
Fuel pump ecu
spark plugs
ignition coils
sent ECU to get fixed.

Right now I’m investigating the camshaft/ crankshaft position sensors. The info I’ve found on symptoms of bad ones matches pretty closely to what issues I have. But I’m not sure whether my issue is cam or crank position sensor.
I’ve also checked the throttle body, it’s pretty clean and snaps perfect, opens all the way when floored in accessory mode. After sitting in my garage a few weeks,and turned on a few times it also started misfiring pretty bad when revved up. Sounds like 2 step.
Any help with this would be greatly appreciated

Bump?
bump?

I’ve found that it’s the ECU that’s messed up. I even had it rebuilt but it’s just completely dead at this point. I’m looking at working used ones