o2 sensor

[GotWood]

My 94 yj w/4cyl keeps killing o2 sensors. It will last longer when I run 93 octane gas, but it still hapens sooner or later. When it goes the engine light comes on and it sputters at low rpm. Tips please.

 

[GotWood]

nothing???

 

[bcammons21]

are you buying good replacements or universal stuff?

 

[bigred]

is you cat clogged? exhaust manifold cracked? intake leaks?
Todd

 

[GotWood]

cat could be clogged, and using bosch o2. will try to punch out the cat and see if that helps.