1991 Toyota 4Runner where to locate o2 sensor(s)? how many a

1991 TOYOTA 4RUNNER
259,360 MILES • 6 CYL • 4WD • AUTOMATIC
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MYTOY4RNNR
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  • 1 POST
gas mileage per gallon has decreesed more than 15%, could o2sensor be the cause
Feb 16, 2010 at 8:11 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
When was your last tune-up? Could be the O2 sensor and other components within the vehicle-
Feb 17, 2010 at 6:16 AM
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