Engine Problems

[GottaMakeIt]

I just recently bought a 94 Lexus ls400 Sewell Dallas edition. It runs OK. But lately it has been running odd. Sometimes when I make left hand turns I lose throttle power. And at other times when I press on the gas pedal it completely gives out and won't give any power, sometimes cutting the engine off. When it happens my check engine light flashes on. But after some time the light will turn off. I don't wanna take it to a dealership yet cuz low on funds. If anyone has any idea or guess I would appreciate it greatly.