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2005 Pontiac Grand Am low mpg

Tiny
IRONMIKE1962
  • MEMBER
  • 2005 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 78,000 MILES
Why am I getting considerable low fuel mileage all of the sudden
Tuesday, September 8th, 2009 AT 12:06 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Has the check engine light come on? Also, have you lost power or is the vehicle running differently?
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Tuesday, September 8th, 2009 AT 8:49 PM
Tiny
IRONMIKE1962
  • MEMBER
  • 2 POSTS
Hey Jacob,
No and No, but last winter when it was freezing up here I could smell gas but it only lasted a couple of days.
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Wednesday, September 9th, 2009 AT 7:52 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
If I had to guess, I would say an oxygen sensor is bad, but I can't be sure without a code from the computer. Make sure the air filter is clean and there are no obstructions in the airway.

Let me know what you find.
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Wednesday, September 9th, 2009 AT 7:53 AM

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