o2 sensor light came on dash. replaced o2 sensor and the light is still on.

1989 ISUZU TROOPER
18,000 MILES
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BOOIEBUBBA1
  • MEMBER
  • 1 POST
vehicle does need a maf sensor.
Aug 31, 2012 at 8:02 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
You would need to check the wiring etc.
Did you check for trouble codes?
Aug 31, 2012 at 10:00 PM
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