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2003 Chevy Astro poor gas millage

Tiny
BRYANFISH
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 50,000 MILES
Van is rated 16mpg city 20mpg highway Im getting average 12.5 mpg which is 60%highway 40%city.I also have a 1999 astro same van same engine also all wheel drive and with that one I average 17mpg.
Sunday, November 30th, 2008 AT 11:41 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi:
It could be a problem with an O2 sensor. Have you had the computer scanned for trouble codes? Most nationally recognized parts stores will do it for free. I recommend having it done to see if there are any stored codes.

Let me know what you find.

Joe
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Tuesday, December 2nd, 2008 AT 4:59 PM

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