It drown and stop accelerating both in 4th and 2nd

I have a Hyundai Terracan of 2003, going in the fourth or second, the engine dies and almost stops, when I go in fourth, I change speed and already limp its normal rhythm. Waiting for someone to give me an idea of ​​what may be happening to you, thanks. I have changed all the filters, in the KTS it does not give me any fault.

It is possible that the air admission gate (the butterfly that regulates the amount of air that enters the engine and is activated with the accelerator) is dirty and of bad information to the sensor, which makes the vehicle computer not work well.
Take out the duct that goes from the air filter and clean the throat of entry (opening the butterfly) you will surely notice that it has dirt and sticks easily.

Hi, did you make a scanner and is Dieles or Gasolina?

hi how are things.
I would like to know if it is a 2.5 diesel engine or a 2.9 diesel

Forgive for the delay in responding. It's a 2.9, thanks.