Ford Contour

Hello everyone,
I have a problem with a Fordour of the year 99 V6 2.5L I am trying to solve this problem for more than two weeks and nothing
is the problem
when the engine is cold and when the accelerator is flooring the engine starts as to go out, I already checked spark plugs, spark plug wires, also a coil I change the temperature sensor because the fault is cold, and I also made cleaning the injectors I also tested them. Someone could help me solve this problem
thanks.