02 sensor 1986 cj-7

[Damage Inc]

I have a AMC 258 i6 / 4.2l litre I 6
I went to emissions a few days ago.
They could not find the 02 sensor.
Could anybody tell me where it is located?

I know normally it should be on the exhaust pipe.
I believe this year of jeep is the first to use the 02 sensor.
I have heard stories about it being mounted on the block, exhaust manifold, and exhaust pipe.

My wife found a schematic. this only indicated the wire color and location on the ecu. 1x wire (grey) pin locations 8,9.
Half the battle.

Thank You,

 

[mylittlecj5]

you do have fuel injection, correct? Not a carb? Just checkin' the easy stuff for ya...

But yea, normally its on the exhaust pipe, a little downstream from the head.

 

[BusaDave9]

AMC 258 i6 / 4.2l O2 sensor.
Is everything stock? If so it's hard to see. It's on the exhaust manifold near where the exhaust pipe connects. Like here:

If it's got an aftermarket header it may look more like this:

or like this on the beginning of the exhaust pipe: