That is regular cruising

GP OWNERS PLEASE dont use carb cleaner to clean your MAF. It may work well once or twice but eventually its going to ruin your MAF. You must use plastic safe electric cleaner... anyways on with the story

Last night I picked up some electric cleaner from the auto parts store and came home and went to work on the maf. I pulled it out and took a look at it, didnt look that dirty but I sprayed it anyways. Sprayed it once really good then let that dry, then sprayed it again just to make sure, put the maf back in hooked everything up and started it up and immediately I could see a difference on my A/F gauge. Lately its always been running on the lean side of ideal, not the way it used to, used to run rich for the most part, I thought this may have been because of the different O2, I put a bosch in and have heard they make some cars run lean. Anyhow, fired it up and right away, I'm seeing green and blue (rich) lights on my a/f gauge. I took it for a drive and it felt 100% better than it has lately, and my a/f gauge was pegging solid blue when I floored it like it used to. I returned home and let it sit and idle for a little bit. Its running a lot better bet I still get some idle suddering and then surging but not as often and not as harsh. I was thinking maybe a sticky pcv valve, or something in the egr valve, but no one ever answered my question on how to clean that... does anyone know how, or what exactly you need to clean? So anyhow, its running much MUCH better, and I suppose if I never quite get it to idle perfect I wont get too dissapointed, after all she is getting to be a pretty old lady I'll keep you updated as I replace more stuff