Originally Posted By Satilite73

I'm not 100% at this point, but, I think the original O2 sensor is still in there. shock I ran out of daylight before I could find the plug end.

I'm disappointed about the results of the EGR even more so because of how much better the truck is running. Even the inspection guy made a comment of how it sounded different when I pulled up to his shop.

Are Bosch sensors that bad? It's all I have readily available without ordering.

I can't do anymore until Saturday.

Thanks for the replies!
If it's just a matter of a day or 2 I'd order one. I got rid of all my personal OBD1 stuff years ago, no $$ in it, even where I work we have just about gotten rid of all those- I work for a school district,and the 20+ year old stuff is HD or diesel, so no diagnostics. Finding guys that are proficient in those old systems is getting tough, we are all retiring or getting out of it, I've got another decade min, if my body can hold up.