Cadillac Repair: 1991 cadillac sedan deville, fuel pressure regulator, cadillac sedan deville

Question
car surges and stalls only when engine is hot, just replaced fuel pressure regulator and still has same symptoms, faulty fuel pump,pulsator? what else could it be?

Answer
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 ?.

Could also be a very common fault of a blackish residue buildup on the throttle plate area that needs to be cleaned off.

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.