The computer in your car will let you know when they fail, the check engine light will come on and the code(s) will direct you to which one failed.
In exhaust pipe before catalytic converter unscrew to replace
There are four oxygen sensors screwed into the converter assemblies. You need to know which one is faulty before attempting to replace them.
Two sensors, and replace them.
The oxygen sensors that connect to the exhaust system. There should be two, and they should screw into the side of the exhaust.
the auto parts dealer said that it was 4 oxygen sensors on that car.the 1998 Lincoln continetal
No.No.
The Patriot has two oxygen sensors. One before and one after the catalytic converter.
You have two oxygen sensors in Toyota Rav4, One before the catalytic converter and another after.
It has 4 oxygen sensors 2 before the cat. and 2 after the cat. $ 50.00 each at Auto Zone.
It has two oxygen sensors. One before and one in the side of the catalytic converter.
Before and after the catylitic converters.
it has 4 sensors two before cat and two after