1993 Buick Regal GS 3.8.....starts hard to keep running , stalls out , no codes on the dash replaced fuel filter. I guess the pump is next. or could it be a sensor

test the fuel pressure sounds like fuel pump getting hot and shutting down

Sounds to me like a fuel filter.When was the last time it was changed?Because if a car starts and runs till you give it gas under load then dies it is a fuel problem.Start by chaging fuel filter and if problem still persists then next thing to check is fuel pump.

Do you have a check engine light on? If yes; try to get the code, have someone loan you a scan tool to access the codes. If you do not have a check engine light on it is not a ecm control issue, ie. (cam or crank sensors etc). Suspect the fuel pump. If you are certain it is working ok. Next is to check the coil pack and Ignition module. Look for spark at the plugs. Pull a plug wire and look / listen for spark to jump out the end to bear metal as you spin the engine trying to start it.

you have to monitor the fuel pressure, if you find that the pressure drops off as soon as the engine has started you should check the fuel pump resistor located on the frame next to the windshield washer tank. If the resistor is ok see if you can keep the engine running with carb cleaner. If the engine stays running on the carb cleaner try disconnecting the mass air flow sensor and see if the engine continues to run by itself. This is all taking for granted that there is not a security system problem. check if the security light keeps flashing while trying to start.

Your fuel pump ballast resistor is bad if it's a super charged engine. you will find it behind the battery other side of the wall kind of hard to find. it's a large white ceramic rectangle this takes the load from the fuel pump allowing it to run.

CHECK FUEL PRESSURE IT SHOULD BE 41 - 47 PSI. IF NOT REPLACE FUEL FILTER.IF NO CHANGE. REPLACE FUEL PUMP.IF FUEL PUMP IS GOOD.YOUR PROBLEM COULD BE A INTAKE LEAK OR SPARK IGNITION PROBLEMS.ALSO USE A SCANNER TO CHECK FOR FAULTY SENSORS OR THEFT DETERENT PROBLEMS.

could be to many thing to take chances with, but most commonly;fuel filter,gas line antifreeze or a crack in your air intake which would take your vacuum seal away, start with the least expensive and work from their. Worst case scenario pinched fuel line

the theromostate will not couse the motor to stall it sounds like to me that the fuel pump could be going bad or the injectors could be dirty

check one of your coolant sensor's

In my regal gs 1998, the fuel pump is n fuel tank. There is a resister that I replaced to fix stalling and shutting down of engine.