Quote Originally Posted by B-Line View Post
Several things come to mind. First is the O2 Sensor. You can get a faulty one and it throws off your readings causing the vehicle to run too lean or rich. Second, is one that I have experienced before on another v6 Mitsubishi in the past. Owner had a friend do the timing belt on his car, but afterward he couldn't get it to smog for the life of him, so he sold it at a loss. Turned out the front cam was off by 2 teeth. Car couldn't run right because of that. I fixed the timing and it worked just fine after. Last might be ECU, but lets not go there just yet.
Thanks for the reply.
I did replace the O2 sensor, with a walker one just two weeks ago, that had the proper connector already attached, so, it probably is not that.
Also, I was Very, Very, careful to get the cams and teeth lined up exactly right, so I highly doubt that is the problem.

I hope it is not the ECU, but a if you guys know of a place where I could have that tested, or repaired, or purchase a new/repaired one, I'm all ears.
As stated, I did already, recap the ECU, as a preventative measure, and I passed smog once after doing that years ago.