Exhaust o2 Sensor

[Frog]

So, how do we wire the o2 sensor for the exhaust? This is for a m50nv.



It isn't in the E36 engine wire harness, was it part of the body? How do I connect it?

[MR 325]

I am 100000% sure the engine harness has a plug for the oxygen sensor.

[Frog]

FML. I just spent the whole day installing the manifold and getting everything finished up.

I now remember cutting it off.

[416stroker]

Its there you probably cut it off.

[Frog]

Thanks guys!

[Frog]

Ok, I found the wire that I cut, and here is the o2 sensor wire. I am now wondering what this square plug is? It is 2 pin. they were all bundled up together. Is it the reverse sensor? REMEMBER, this is from an AUTOMATIC.

[herlsy]

I'm thinking it's probably not for reverse, since that would have to go on the switch that goes in the trans. I would just check an ETM, possibly on the auto trans pages.

[matt]

Yes, that is for the reverse sensor.

[nando]

always verify by wire color before cutting stuff off..

[Frog]

In the swapped e30, we connect the reverse sensor from the body, not the engine wire harness like on the e36. Correct?

[nando]

yes

[Frog]

Thanks nando!