The fuel pump may fail causing engine to stall and not restart.Google+
Car Problem Reports
Chevrolet Impala Failed Fuel Pump Can Cause Engine to Stall
Chevrolet Impala Problem
Engines Affected: 3.4L V6, 3.5L V6, 3.8L V6
Average Mileage: 102,450 mi (43,000 mi - 199,000 mi)
Visitor, 2007 Chevrolet Impala, 3.5L V6, 43,000 mi
Won't start, pumping not turning on. Replaced relay, still nothing. Sprayed starter fluid in carberator and started.
Visitor, 2004 Chevrolet Impala, 3.8L V6, 61,253 mi
hard to start.chugging before start and loss of power.
Visitor, 2005 Chevrolet Impala, 3.8L V6, 59,000 mi
I WAS TOLD IT WAS CATALITIC CONVERTER,BUT WE THINK ITS IGNITION OR FUEL INJECTORS
Visitor, 2007 Chevrolet Impala, 3.5L V6
my fuel. point failed also and it cost 600$ to get it fixed.