1991 Buick Century stalliing

MOXXIE

MEMBER
1991 BUICK CENTURY
6 CYL
2WD
AUTOMATIC
50,000 MILES

The vehicle stalls after warm up in drive. Not all the time. Has good fuel pressure, new plugs, throttle body has been cleaned. The IAC has been replaced and the car has been driven with the trans/lock-up disconnected. Also, the fuel filter has been changed and inj cleaner added to fuel tank. No trouble codes, and runs good otherwise.

1 Reply

ODDMOORE

MEMBER
12 POSTS

There's a very good chance it's the "Mass Air Flow Sensor". My daughter has a 95 Buick Century, that's been doing the same thing for a couple of months now. At first it was a rare occurance. Then a VERY, VERY frequent one. You drive your car for 10 to 20 minutes and whenever you stop or come to a idel speed it would die, then start right back up. Check engine light comes on more and more. Eventually it's on as soon as you start your car. I used a "Actron Super AutoScanner CP9145 OBDll code reader", to verify my diagnosis and that's exactly what it was. The Mass Air Flow Sensor". Fortunately, it's a easy part to access and remove since it's right on top of your engine. Mine cost, (with a core charge) $136.00 at Autozone. Good Luck. :-)