Mechanics

STALLS WHILE DRIVING/DECE

2000 Buick Regal

Engine Performance problem
2000 Buick Regal 6 cyl Two Wheel Drive Automatic 100000 miles

My 2000 Buick Regal has died multiple times in the past week as I was driving. The engine quits in as little as five minutes, but might take longer, and always happens as I am decelerating (foot off the accelerator, applying brake). Cranking causes the engine to fire, but not enough to keep running. It might take up to twenty tries to get it running again, and black smoke pours out of the exhaust.

En route to my mechanic, driving slowly and gently, the car would not stall. The mechanic road tested the car, and he made it stall.

Initially, error codes P0300, P0463, P1096, P0103 and P0128 were read, but they were too disassociated to be of any use. The older battery was replaced and the cables serviced to ensure good positive and ground connections. The ECM was reprogrammed (cost: $100!), And the Regal ran well for a day. Shortly thereafter, it began dying as before, and was returned to the shop.

Mechanic Bob kept the Regal in his shop for four days, engine idling with test equipment attached. When it died, it started up immediately, and no error codes are present. He is at a loss.

He replaced the crankshaft sensor (at my urging), and it looked like the problem was solved. Not so! It only took a few miles for the problem to happen again.

The odometer light has not worked for several weeks, but I doubt if this is connected.

Anyone have any idea as to what might cause this?
Avatar
Bsamstag
March 18, 2009.



You say that your buick is stalling while drving? My 1999 regal did the same around 120,000 miles my mass air flow sensor was bad everytime I would slow down or hit the brakes my engine would shut off it had cost me around 300 dollars to fix those parts usually only last around 100,000 miles you may want to check that out and search for prices I had a repairman fix my problem. Hope I could be at help and also you may want a new fuel filter those are very very cheap

Tiny
Drwfugate
Apr 15, 2009.
I got lucky; the Regal was acting up as the mechanic drove it to his shop, and diagnostic tool showed the MAF was the culprit. Replacement (at $360) took care of the problem. Replacing the Crank Sensor and the Low Speed Idle sensor did NOTHING except increase the total cost to around $900.

Every time I thought I could demonstrate the problem to the mechanic, the devious Regal did nothing but run perfectly. That's why I said I got lucky.

Thanks to all who replied to my request.

Tiny
Bsamstag
Apr 28, 2009.