Where is the o2 sensor located on a 1986 Chevy caprice classic?

M

m_tony48

New member
I got me a 1986 chevy caprice classic brougham with a 305 4 bbl and i cant find the o2 sensor. I know on my old 1988 it was on the exhaust manifold on the right side but cant find it on my new 1986.

And is it true that changing the o2 sensor will give me much better gas millage , even more since mine is more than 20 years old, supposed i can find it so i can change it after.

thank you
 
Changing a worn O2 sensor will increase mileage. Follow the exhaust manifold around and find the O2 sensor close to the bottom. Buy the one wire OEM, not the universal.
 
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