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2000 Pontiac Grand Prix

Tiny
LIVNLEGND19
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 60,000 MILES
My 2000 Grand Prix GT recently just started to jerk while in gear like it was not getting gas and then would stall out. It was put on a computer and it said thet the Air Flow sensor was bad. After about 4 days it stalled again. What can be causing my car to stall?
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Thursday, April 23rd, 2009 AT 6:26 AM

4 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Did you change or clean the MAF (Mass Air Flow sensor)?

If MAF is bad, the PCM will set it to a default setting, usually rich, which will cause the engine to stall and run rough.

Try cleaning the MAF with a MAF cleaner available at most autoparts stores, (DO NOT TOUCH MAF WIRES).

If problem persists, replace it.
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Thursday, April 23rd, 2009 AT 6:39 AM
Tiny
LIVNLEGND19
  • MEMBER
  • 3 POSTS
That is the first thing that was changed. We put a brand new one in. The car ran fine for a few days and then stalled at a stop light. We got the car started again and the check engine light was on. We took it to my mechanic and when he got around to fix it the car ran fine and the check engine light was off. We cahnged the plugs, wires, and fuel filter.
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Friday, April 24th, 2009 AT 6:33 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Error codes are meant to use as a guide not an absolute (in most cases).
Fatory techs will go through a series of tests to evaluate an error code.

While you may have been getting a MAF code, the cause could have been a weak spark.

Same is true of O2 sensor, you may have an O2 sensor failure but you need to find cause of failure and it is not always the O2 sensor.
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Friday, April 24th, 2009 AT 6:44 AM
Tiny
LIVNLEGND19
  • MEMBER
  • 3 POSTS
I've been doing a little research and the most common problem I am seeing that people are having with the same issues is the Crank Shaft Position Sensor or a fuel pressure regulator. Would Pep Boys or Auto Zone be able to tell if these parts are faulty or would I have to go to a dealer?
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Friday, April 24th, 2009 AT 7:11 AM

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