[prof_hussam]

sometimes the car starts just fine and drives normally, but in other times the car cranks and starts but the engine immediately loses power and stalls, it won't hold idling revs.

it's an erratic issue, so sometimes the car works and i drive normally but i fear if I shut it off it won't start again.

it has not died on me while driving.

Fuel pump was replaced a year ago, so i don't think it's the problem.
recently changed the alternator and the battery

i've shot a video just in case something is unlcear where i tried starting the car twice

 

[Mazo]

If you give it a little gas when having the issue does it stay running or still die? If it stays running I'd be looking at the idle air control valve.

 

[prof_hussam]

still dies when pressing the gas pedal, it almost has no effect on the car.

 

[Mazo]

still dies when pressing the gas pedal, it almost has no effect on the car.

Hmm, I'd suspect a fuel delivery problem then. Leaky injector, air in fuel lines maybe?

Short of starting to pull things apart your best course of action would be a modified ELM327 adapter, a copy of Forscan and start looking at trouble codes and real time data. Fuel rail pressure would be a good one to check if applicable to your model.

 

[Smitty1]

Don't know if this helps , but read somewhere to keep accelerater depressed when turning car off as some gases get trapped in manifold .