Cadillac Repair: will not start, fuel pump relay, fuel rail

Question
QUESTION: I'm having problems figuring out my caddy-it turns over but it will not fire except if i use ether. I checked the pass key resistance and that is same as key and the wires by the wires both  checks out fine, I have a current code of b334 any other tests or ideas you could give would be greatly appreciated - Jeff

ANSWER: If I only had a YEAR-MODEL-ENGINE SIZE, I would be only so happy to answer your question.

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QUESTION: Sorry I forgot some important information, it's a 1990 seville with a 4.5 multi port. I do have about 42 psi fuel pressure at the fuel rail, good spark and compression, I replaced the fuel pump relay and all the fuses are good.
thanks for your time and assistance

Answer
You have a loss of data from the ECM computer.

If you are mechanicaly inclined or know of someone who is, You will need simple electrical schematics, Test procedures and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture. I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.