My 1995 chevy lumina was recently submerged and stalled in 2.5-3ft of water for over an hour before it was able to be pushed out. After a quick tow home, i removed the plugs and turned the engine over, changed the oil, got a new air filter, changed the fuel filter and everything seemed to be running fine.

The car can start and idle fine most of the time, but once the throttle is pushed, the car bogs down and stalls. I have a few ideas as to why this may be happening, but not quite sure where to start.

Fuel injectors bad? cylinders not getting fuel?
Bad cat converter? possibly an O2 sensor?

Also, the only lights that are on on the dash are ABS and Airbag lights. No check engine light or anything.

Please let me know what you all think before i start ripping into the car blindly.