I do not work for intrepid 1998

Hello good to all the members of Es foro I appreciate your atuda in advance I give you LSA thank you.
My problem is that I just bought a car the American Intrepid, the preoclema it presents is that it does not mark the revocations, speed at which I go, temperature, qilometje rted and the most important thing does not mark the engine temperature that is what interests me.
He took it to a mechanic and put the scanner and the diagnosis was that the PCM or something is called the mint body tells me that he is not sending the signals to the monitoring board.
Someone else has or knows where I can find this used or new module and look for it a lot but I can't find it. The engine and fans work perfection only that I worry not to monitor the state of the car. Thank you ...