o2 sensors

[Steven Todorow]

So I have a 2005 ford mustang v6 with 97k on it, and i just recently bought a OBD-2 scanner and everything was perfect except 2, o2 sensors. Bank 1&2 sensor 3.
So my question is where would i find these? i can see 2 of them from the engine bay but i do not wanna put the wrong ones in? im assuming that sensor 3 and 4 are downstream and then 1&2 are upstream?
would they be more towards the back of the exhaust and would they be close to the exhaust?

thanks for any help guys most appreciated.

Topic

[Richard Kirshy]

There are two upstream O2 sensors 4.0L V6 Upstream & Downstream Sensor Locations

If a V6 engine has dual exhausts with dual converters, the downstream O2 sensors would be labeled Bank 1, Sensor 2 and Bank 2, Sensor 2. Or, the downstream oxygen sensor might be labeled Bank 1 Sensor 3 if the engine has two upstream oxygen sensors in the exhaust manifold (some do to more accurately monitor emissions).

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• o2.jpg

[Steven Todorow]

[quote=”nightflyr” post=161576]There are two upstream O2 sensors 4.0L V6 Upstream & Downstream Sensor Locations

If a V6 engine has dual exhausts with dual converters, the downstream O2 sensors would be labeled Bank 1, Sensor 2 and Bank 2, Sensor 2. Or, the downstream oxygen sensor might be labeled Bank 1 Sensor 3 if the engine has two upstream oxygen sensors in the exhaust manifold (some do to more accurately monitor emissions).

[/quote]

it just has single exhaust, But thanks i didnt realize they would be labeled

[Author]

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