Cadillac Repair: 1990 Cadillac Sedan Deville, fuel pump relay, cadillac sedan deville

Question
My car will not start or idle it acts like it wants to start but wont ive went through everything but cant figure it out do you have any suggestions? THANKS

Answer
You most likely have a fuel PRESSURE/VOLUME problem with the fuel pump and or the fuel pump relay.

IS or HAS the CHECK ENGINE light ever illuminated while driving the vehicle and or has any other lights illuminated or any messages from the message display center ?.

What work or diagnostics of ANYKIND WHAT-SO-EVER have been performed on the vehicle trying to fix this problem ?.