fuel pump

I have a 2001 Alero that I recently replaced the fuel pump, fuel filter and fuel pressure regulator on. Worked great for a week or so. Now, it doesn't want to run the fuel pump during the warning light test, prior to cranking. That means no start, just a few sputters and nada while cranking...

Been having issues while driving. Hesitates/lacks when I try to accelerate, will die when I perform a 3 point turn, idles rough goes high then low. It has just shut off when I was driving also. Kinda scary. Love this car 1990 88 royale brougham 3800 V6. has only 70,000 miles on it. Bought it off...