Hi all,

I am trying to get my 94 VTEC to pass smog. It failed across the board and I got my cat replaced, valve job, new plugs, oil leaks fixed and it helped all but the NO levels. It has been at a Test and repair garage for 2+ days and they have narrowed it down to the O2 sensor giving off bad voltage. they replaced it and it had the same voltage. they think this is what is causing the EGR system to not go into a closed loop system. They have no idea why the O2 Sensor would do this.

Any ideas would be great.

Thanks