Ignition problem of my Jetta 2003

My 2003 2.0 jetta did not work only towards Start, I changed the followñal sensor and worked 1000 km. And everything is well turned off the car and turns on correctly in a moment he turned it off and did not want to turn on, could they only help me?

It is the immobilizer. You have three, check the relays and fuses, leave your original key on ON without lighting for 30 min. Turn off and go. You will have to put the vag to unlock the immobilizer and match the key

Thank you my friend Achare for your valuable collaboration looking for the moved crankshaft sensor, they have a league that helps them as a packaging apparently was not carefully installed and slopes, this causes the computer not to detect the teeth of the hoop and in concession when it does not receive a signal does not strain or the coil and of course there are either the injectors or work the injectors. Thank you.