The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.Google+
Car Problem Reports
Buick Regal Stalling Due to Mass Air Flow or Crankshaft Position Sensor Failure
Buick Regal Problem
Engines Affected: 3.8L V6, 3.8L V6 Supercharged
Average Mileage: 169,970 mi (90,000 mi - 240,000 mi)
Visitor, 1999 Buick Regal, 3.8L V6 Supercharged, 142,500 mi
Car would shut off randomly, at first only after it had been running for a while, but it got worse and would stall any time/at least twice per day. Replace mass air flow sensor 3 days ago, hasn't stalled since.
Visitor, 1999 Buick Regal, 3.8L V6 Supercharged, 234,000 mi
while driving down the road the car would just shut off, and i would have to wait for a few minutes before it starts again
Visitor, 1999 Buick Regal, 3.8L V6 Supercharged, 170,000 mi
Car stalling repeatedly, suddenly and without warning or sluggish performance. No DTC codes found with Actron Scan Tool. Had shop run tests, they recommended either MAF and/or CPS replacement. Replaced MAF myself, but stalling continued; then ran code scanner again, and popped P0336, stating pending CPS problem. Considered this definitive proof of cause of stalling. Scheduled CPS replacement.
Visitor, 1998 Buick Regal, 3.8L V6, 100,200 mi
Acted like out of gas due to resulting over lean - $500 sensor fix
Visitor, 2004 Buick Regal, 3.8L V6 Supercharged, 90,000 mi
Crankshaft sensor failure caused vehicle to stall at highway speed.
intermittent killing now wont start cleaned mass air flow no longer pull up code for maf
just replaced crankshaft position sensor....problem solved...no more MAF code either
Visitor, 1996 Buick Regal, 3.8L V6
the car stalls aleast twice a day weather i drive at high or low speeds.
Visitor, 2000 Buick Regal, 3.8L V6 Supercharged, 150,000 mi
Had to have new sensor put in car after having it stall 3 times while on my way to work.
Visitor, 1999 Buick Regal, 3.8L V6 Supercharged
Replaced car has 180,000
Visitor, 2000 Buick Regal, 3.8L V6, 240,000 mi
Car dies varies times no special speed or RPM Finally security light comes on, pointing to the key and/or ignition switch. Traded to wife's original, seldom used key After the three minutes, car started drove the 1800 miles home with no more problems. Buick dealership wanted to replace crank sensor at $200. Maybe a good guess generally. The key is just another thing to check. Book also suggested just clean the key. At the 240000 on the 7000 mile trip the 3.8 did not require any added oil and still gets from 29 to 31 MPG at freeway speeds. Finding it hard to replace with a new car.