Cadillac Repair: 92 Cadillac sts, cadillac sts, fuel pressure

Question
will not start. tries to, almost will first time turned over.  have not yet checked for any error codes, i have researched how to, but haven't found any lists for what each code is. it is getting fuel, spark and air, could it be a sensor or computer?

Answer
Could be LOW fuel pressure, Computer or any number of sensors. You need to retrieve the codes from the computer and let me know what codes you have and if the code is a (C) current or (H) history code and I can provide the definition of the codes to you.