WON'T STAY RUNNING on 1991 Buick Regal

I HAVE A 1991 BUICK REGAL WITH A 3.8 ENGINE. MY CAR WONT STAY RUNNING AFTER REPLACING THE FUEL PUMP, TANK, LINES, FUEL FILTER, AND THE IGNITIODULE. I DONT KNOW WHAT ELSE TO DO. WHAT ELSE COULD BE WRONG. MY CAR HAS NEVER OVERHEATED. HAS TUNE UP AND REGULAR MAINTENANCE.

Asked by for the 1991 Buick Regal
2 answers 2 comments
had same problem did all the same stuff ended up being the bolt on the battery was not giving a good connection. try checking your battery connections.
Have you changed the crank sensor?
NO...WHERE'S THAT LOCATED...BY THE CRANKSHAFT???

OK, I HAD THAT CHECKED AND IT'S NOT THAT. iS THERE ANY OTHER RESOURCES OR METHODS OF TROUBLESHOOTING MY CAR.
check for vacuuum leaks my car wouldnt stay running and it was a broken pvc valve