So I keep my K&N clean.
So it looks like just the plugs and TB for the most part. Anything else. I'm going to do a TB spacer when I do this. So that will get all cleaned up anyway.
Upstream sensors? I have looked at the exhaust one's when doing that. Not sure what you mean by upstream.
I tend to disconnect the battery during this kind of maintnance. Is there any reason I shouldn't. I figure since I have a chip it's good to let everything reset.
First I sit and watch. Then I stir the pot!...................................01 4.7 Rockkrawler 6.5 w/37 Krawlers on Allied Monster beadlocks, Auto, Atlas 3.8, 35 spline ARB'd 9 inch rear, ARB'd Piece-o-**** 30 front, etc.
If you have a "It's a jeep thing" sticker then YOU don't understand!!!