2001 Buick Lesabre Service engine soon light

2001 BUICK LESABRE
68,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
ESTIMATORMAN
  • MEMBER
  • 2 POSTS
I just got gas and a carwash. Now the service engine soon light comes on and stays on, it does not flash. Sometimes, the light just goes out. Sometimes the car stumbles or hesitates. What could be wrong? Other than that, the car runs fine.
Jan 26, 2008 at 12:00 PM
Advertisement
Avatar
2CARPRO JACK
  • CERTIFIED EXPERT
  • 11,533 POSTS
Have the PCM scanned for trouble codes, Autozone will do it for free. This will tell us a good place to begin.
Jan 27, 2008 at 9:29 AM
Avatar
ESTIMATORMAN
  • MEMBER
  • 2 POSTS
Okay. Went to Auto Zone.. "The PCM has determined that the mass air flow input is lower than expected for the current engine operating conditions".
What is the most probable cause?
Jan 27, 2008 at 3:24 PM
Advertisement
Avatar
2CARPRO JACK
  • CERTIFIED EXPERT
  • 11,533 POSTS
Could be a bad Mass Airflow Meter. You can try cleaning it with the proper cleaner, but I have never had much luck with it working for very long
Jan 28, 2008 at 7:29 AM