okay my grandmother has a 1997 lexus ls400. with the famous 1uzfe 4.0 v8so today she accidentally drove through about 2 feet standing water and she was able to go to rite aid the on her way home it started chugging she said. i checked it out oils, fine check engine light is on though. when i started it up, the engine idled at like 200rpms then eventually shut off, it did this for about 15 seconds, but it sounds like a misfire. i need help before i consult a mechanic.fyi i do know quite a bit about mechanics i have a 68 cutlass, however when it comes to the newer stuff like the lexus although 14 years old im in unfamiliar territory with the ignition system and electronics
Use a code reader and find out why the check engine light is on. You have a bad electronic component in the ignition system.
