• NAXJA is having its 18th annual March Membership Drive!!!
    Everyone who joins or renews during March will be entered into a drawing!
    More Information - Join/Renew
  • Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.

O2 sensor hanking by wire,no CEL

Truckedup

NAXJA Forum User
Location
Western NY state
My 97 had a noisy exhaust for several months. Then it got real noisy a few weeks ago. The convertor was rotted out at the rear so the O2 sensor was loose and swinging by the wires. No Check engine light, performance and fuel mileage was normal. I put on a different convertor and used the same O2 sensor...
Why didn't the check engine light come on? Was this a recall about 6 years ago?
 
The rear O2 sensors checks Cat Converter performance. While swinging in the fresh air, it saw no excess combustion byproducts, so it was happy.
 
Back
Top