Engine sounds like it is missing

Tiny
GINA MYERS
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
Car was running fine went to store came out got in it, it backfired. Now it wants to shut off and sounds like it's missing. Oil is fine all fluids are good. What could it be.
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Sunday, December 15th, 2019 AT 8:09 PM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good morning,

How long since you had a good tune-up?

https://www.2carpros.com/articles/engine-backfires-while-running

Is the check engine light on?

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy
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Monday, December 16th, 2019 AT 2:54 AM
Tiny
GINA MYERS
  • MEMBER
They changed the O2 sensor thinking it was that and now it wont start at all. All the lights are always on on the dash because they changed the ignition switch before we got it and something happened so they are always on.
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Monday, December 16th, 2019 AT 10:07 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, were there any codes set?

You need to check for fuel pressure and spark as one of them is missing.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Roy
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Monday, December 16th, 2019 AT 11:59 AM

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