• Tiny
  • johny633
  • Honda Civic

1999 Honda Civic XL, 106000 miles. Have taken good care of vehicle. Constant oil changes, filters ect. Have recently lost gas mileage, about 6 to 10mpg. New spark plugs, increased power but nothing to gas mileage. Vehicle runs very good. Maybe o2 sensor? Also great site, lots of information.

Monday, June 26th, 2006 AT 3:52 PM

1 Answer

  • Tiny
  • Bruce Hunt
  • Expert
  • 3,761 posts

I wouldn't mess with the O2 sensors yet. They can be a factor but there are other things to look at. Timing, tire pressure, dragging brakes, air cleaner, etc
Good old basic stuff.

Was this
Tuesday, June 27th, 2006 AT 7:16 AM

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