very important, please help

My car starts to stall when excellerating. There is no pick up either when coming out of a stop or going up a hill. Overall, the drive can be very jerky with little power to the engine.
I passed all the code test in a scann last week, I've done a tune-up and all the fluids are ok.

I need some help

Year of car, engine type, etc. is always helpful when trying to diagnose a problem.

But without that info, I'm gonna say that it sounds like it could be a fuel delivery problem, check the fuel pressure at the injector rail. Or just go ahead and change the fuel filter (usually under the car by the fuel tank).

Year of car, engine type, etc. is always helpful when trying to diagnose a problem.

But without that info, I'm gonna say that it sounds like it could be a fuel delivery problem, check the fuel pressure at the injector rail. Or just go ahead and change the fuel filter (usually under the car by the fuel tank).

My car is a 90 Oldsmobile cutlas ciera sl 3.3 6 v

Thanks for that info. Check what I suggested and let us know.