Engine Performance problem
1996 Buick Lesabre 6 cyl Front Wheel Drive Automatic 99000 miles
----------------------------------------------------------------
Car had complete tune up last month
Fuel pump and Fuel Filter changed 3 weeks ago
complete carburator changed last week; however,
car continues to shut off while driving.
Car is FULL with gas but after the fuel pump was changed, the gas gauge no longer works accurately.

Tried changing fuse, sometimes it works, sometimes it does not.

Please help. Have no more funds to fix.