oxygen sensors

SATURN
Avatar
BENSTAUBER
  • MEMBER
  • 1 POST
where are the oxygen sensors located? I have the 1.9 DOHC engine with two sensors. My local mechanic told me to do it myself with a 3/8" wrench.
help!
Apr 22, 2006 at 4:09 AM
Advertisement
Avatar
PEPPERMRJ
  • Experienced Mechanic
  • 1,158 POSTS
They're are two. The front one is readily accessible from the front of the car. It is located in the exhaust manifold. Sort of looks like a spark plug with a thin wire attached to it.

The second is located either at the end of the catylitic convertor or the pipe right after it. A little tougher to acccess.

Both can be change but I would recommend purchasin the special socket for each of them. Some auto parts stores even rent or loan them for free.

How do you know they need to be replaced?

:)
Apr 22, 2006 at 9:57 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.