Thank you all for your help this is update what I did
I checked for vacum leaks with carnurator cleaner and it doesn't seem to have any.
I also replaced O2 sensor
I also checked fuel injectors by unpluging each one (when i did this and i unplug the conector that goes into injector with engine running car trys to die which is telling me that injector is working fine)
could it be EGR valve? Where is it located?
guys I am running out of ideas :-(