Report: Stalling Due to Mass Air Flow or Crankshaft Position Sensor Failure
Chevrolet Impala Problem
Engines Affected: 3.4L V6, 3.5L V6, 3.8L V6
Average Mileage: 138,760 mi (12,600 mi - 203,000 mi)
Visitor, 2003 Chevrolet Impala, 3.8L V6, 112,000 mi
My 3.8 impala stalled twice while my wife was driving. Like clockwork, it would shut down when it got to normal operating temp (about 175 per the temp gauge). There were no codes and no check engine light. I changed the crank position sensor and the problem didn't go away. I then unplugged the mass air flow sensor, and the car would run (not real well, but it would run and idle). Unplugging the MAF causes the computer to rely on other sensors to operate. Wish I would have changed the MAF first, because it was MUCH easier to do than the crank position sensor.
My car would crank but I had to keep my foot on the gas to stay crunk. I disconnect the MAF (Mass Air Flow)and it stayed crunk with no assistance. I replaced the MAF for $138 from autozone and have been driving for 2 months now with no issues.
Visitor, 2001 Chevrolet Impala, 3.4L V6, 169,331 mi
Our son's 2001 Chev Impala 3.4L V6 stalls in normal weather and when the weather is damp or rainy the engine runs very rough, misses and backfires. The vehicle also has failed the emissions test. The emissions report stated the possible failure was due to a faulty Crankshaft Position Sensor and or Catalytic converter. I have replaced the Crankshaft Position Sensor but the vehicle still stalls and runs very rough when the weather is damp or rainy. We had a new Catalytic converter installed before the emissions test.
Visitor, 2002 Chevrolet Impala, 3.8L V6, 130,000 mi
Cars stalls and does not start back up, unless I wait ten minutes or more. Stalls at least three times a day. I tried replacing the Mass Air flow sensor; yet, the problem continues.
Visitor, 2000 Chevrolet Impala, 3.8L V6, 155,000 mi
It would stall at stop signs, going 65mph and replaced CPS, and so far so good.
Visitor, 2003 Chevrolet Impala, 3.4L V6, 170,000 mi
car starts up fine... but once the temp reach norm 180 degrees and u shut car off it doesn't want to start right . car will stall & hesitate trying to start back up. unless engine completely cools all the way down. If u let car idle and run at norm operating temp you'll notice the car running rough at idle and the check engine light will come on.
Visitor, 2000 Chevrolet Impala, 3.8L V6, 119,000 mi
showing mass air flow and purge soenoid codes
my car stalled out due wile driving it not good my diagnostic's code for the mass air flow intake is showing up
Visitor, 2005 Chevrolet Impala, 3.4L V6, 120,000 mi
Engine stalls randomly when turning right mostly or when stopped too long.
Visitor, 2001 Chevrolet Impala, 3.8L V6, 150,000 mi
bad mass airflow sensor, had mechanic fix at my cost.